Algebra ->  Tutoring on algebra.com -> See tutors' answers!      Log On

 Tutoring Home For Students Tools for Tutors Our Tutors Register Recently Solved
 By Tutor
| By Problem Number |

Tutor:

# Recent problems solved by 'Alan3354'

Jump to solutions: 0..29 , 30..59 , 60..89 , 90..119 , 120..149 , 150..179 , 180..209 , 210..239 , 240..269 , 270..299 , 300..329 , 330..359 , 360..389 , 390..419 , 420..449 , 450..479 , 480..509 , 510..539 , 540..569 , 570..599 , 600..629 , 630..659 , 660..689 , 690..719 , 720..749 , 750..779 , 780..809 , 810..839 , 840..869 , 870..899 , 900..929 , 930..959 , 960..989 , 990..1019 , 1020..1049 , 1050..1079 , 1080..1109 , 1110..1139 , 1140..1169 , 1170..1199 , 1200..1229 , 1230..1259 , 1260..1289 , 1290..1319 , 1320..1349 , 1350..1379 , 1380..1409 , 1410..1439 , 1440..1469 , 1470..1499 , 1500..1529 , 1530..1559 , 1560..1589 , 1590..1619 , 1620..1649 , 1650..1679 , 1680..1709 , 1710..1739 , 1740..1769 , 1770..1799 , 1800..1829 , 1830..1859 , 1860..1889 , 1890..1919 , 1920..1949 , 1950..1979 , 1980..2009 , 2010..2039 , 2040..2069 , 2070..2099 , 2100..2129 , 2130..2159 , 2160..2189 , 2190..2219 , 2220..2249 , 2250..2279 , 2280..2309 , 2310..2339 , 2340..2369 , 2370..2399 , 2400..2429 , 2430..2459 , 2460..2489 , 2490..2519 , 2520..2549 , 2550..2579 , 2580..2609 , 2610..2639 , 2640..2669 , 2670..2699 , 2700..2729 , 2730..2759 , 2760..2789 , 2790..2819 , 2820..2849 , 2850..2879 , 2880..2909 , 2910..2939 , 2940..2969 , 2970..2999 , 3000..3029 , 3030..3059 , 3060..3089 , 3090..3119 , 3120..3149 , 3150..3179 , 3180..3209 , 3210..3239 , 3240..3269 , 3270..3299 , 3300..3329 , 3330..3359 , 3360..3389 , 3390..3419 , 3420..3449 , 3450..3479 , 3480..3509 , 3510..3539 , 3540..3569 , 3570..3599 , 3600..3629 , 3630..3659 , 3660..3689 , 3690..3719 , 3720..3749 , 3750..3779 , 3780..3809 , 3810..3839 , 3840..3869 , 3870..3899 , 3900..3929 , 3930..3959 , 3960..3989 , 3990..4019 , 4020..4049 , 4050..4079 , 4080..4109 , 4110..4139 , 4140..4169 , 4170..4199 , 4200..4229 , 4230..4259 , 4260..4289 , 4290..4319 , 4320..4349 , 4350..4379 , 4380..4409 , 4410..4439 , 4440..4469 , 4470..4499 , 4500..4529 , 4530..4559 , 4560..4589 , 4590..4619 , 4620..4649 , 4650..4679 , 4680..4709 , 4710..4739 , 4740..4769 , 4770..4799 , 4800..4829 , 4830..4859 , 4860..4889 , 4890..4919 , 4920..4949 , 4950..4979 , 4980..5009 , 5010..5039 , 5040..5069 , 5070..5099 , 5100..5129 , 5130..5159 , 5160..5189 , 5190..5219 , 5220..5249 , 5250..5279 , 5280..5309 , 5310..5339 , 5340..5369 , 5370..5399 , 5400..5429 , 5430..5459 , 5460..5489 , 5490..5519 , 5520..5549 , 5550..5579 , 5580..5609 , 5610..5639 , 5640..5669 , 5670..5699 , 5700..5729 , 5730..5759 , 5760..5789 , 5790..5819 , 5820..5849 , 5850..5879 , 5880..5909 , 5910..5939 , 5940..5969 , 5970..5999 , 6000..6029 , 6030..6059 , 6060..6089 , 6090..6119 , 6120..6149 , 6150..6179 , 6180..6209 , 6210..6239 , 6240..6269 , 6270..6299 , 6300..6329 , 6330..6359 , 6360..6389 , 6390..6419 , 6420..6449 , 6450..6479 , 6480..6509 , 6510..6539 , 6540..6569 , 6570..6599 , 6600..6629 , 6630..6659 , 6660..6689 , 6690..6719 , 6720..6749 , 6750..6779 , 6780..6809 , 6810..6839 , 6840..6869 , 6870..6899 , 6900..6929 , 6930..6959 , 6960..6989 , 6990..7019 , 7020..7049 , 7050..7079 , 7080..7109 , 7110..7139 , 7140..7169 , 7170..7199 , 7200..7229 , 7230..7259 , 7260..7289 , 7290..7319 , 7320..7349 , 7350..7379 , 7380..7409 , 7410..7439 , 7440..7469 , 7470..7499 , 7500..7529 , 7530..7559 , 7560..7589 , 7590..7619 , 7620..7649 , 7650..7679 , 7680..7709 , 7710..7739 , 7740..7769 , 7770..7799 , 7800..7829 , 7830..7859 , 7860..7889 , 7890..7919 , 7920..7949 , 7950..7979 , 7980..8009 , 8010..8039 , 8040..8069 , 8070..8099 , 8100..8129 , 8130..8159 , 8160..8189 , 8190..8219 , 8220..8249 , 8250..8279 , 8280..8309 , 8310..8339 , 8340..8369 , 8370..8399 , 8400..8429 , 8430..8459 , 8460..8489 , 8490..8519 , 8520..8549 , 8550..8579 , 8580..8609 , 8610..8639 , 8640..8669 , 8670..8699 , 8700..8729 , 8730..8759 , 8760..8789 , 8790..8819 , 8820..8849 , 8850..8879 , 8880..8909 , 8910..8939 , 8940..8969 , 8970..8999 , 9000..9029 , 9030..9059 , 9060..9089 , 9090..9119 , 9120..9149 , 9150..9179 , 9180..9209 , 9210..9239 , 9240..9269 , 9270..9299 , 9300..9329 , 9330..9359 , 9360..9389 , 9390..9419 , 9420..9449 , 9450..9479 , 9480..9509 , 9510..9539 , 9540..9569 , 9570..9599 , 9600..9629 , 9630..9659 , 9660..9689 , 9690..9719 , 9720..9749 , 9750..9779 , 9780..9809 , 9810..9839 , 9840..9869 , 9870..9899 , 9900..9929 , 9930..9959 , 9960..9989 , 9990..10019 , 10020..10049 , 10050..10079 , 10080..10109 , 10110..10139 , 10140..10169 , 10170..10199 , 10200..10229 , 10230..10259 , 10260..10289 , 10290..10319 , 10320..10349 , 10350..10379 , 10380..10409 , 10410..10439 , 10440..10469 , 10470..10499 , 10500..10529 , 10530..10559 , 10560..10589 , 10590..10619 , 10620..10649 , 10650..10679 , 10680..10709 , 10710..10739 , 10740..10769 , 10770..10799 , 10800..10829 , 10830..10859 , 10860..10889 , 10890..10919 , 10920..10949 , 10950..10979 , 10980..11009 , 11010..11039 , 11040..11069 , 11070..11099 , 11100..11129 , 11130..11159 , 11160..11189 , 11190..11219 , 11220..11249 , 11250..11279 , 11280..11309 , 11310..11339 , 11340..11369 , 11370..11399 , 11400..11429 , 11430..11459 , 11460..11489 , 11490..11519 , 11520..11549 , 11550..11579 , 11580..11609 , 11610..11639 , 11640..11669 , 11670..11699 , 11700..11729 , 11730..11759 , 11760..11789 , 11790..11819 , 11820..11849 , 11850..11879 , 11880..11909 , 11910..11939 , 11940..11969 , 11970..11999 , 12000..12029 , 12030..12059 , 12060..12089 , 12090..12119 , 12120..12149 , 12150..12179 , 12180..12209 , 12210..12239 , 12240..12269 , 12270..12299 , 12300..12329 , 12330..12359 , 12360..12389 , 12390..12419 , 12420..12449 , 12450..12479 , 12480..12509 , 12510..12539 , 12540..12569 , 12570..12599 , 12600..12629 , 12630..12659 , 12660..12689 , 12690..12719 , 12720..12749 , 12750..12779 , 12780..12809 , 12810..12839 , 12840..12869 , 12870..12899 , 12900..12929 , 12930..12959 , 12960..12989 , 12990..13019 , 13020..13049 , 13050..13079 , 13080..13109 , 13110..13139 , 13140..13169 , 13170..13199 , 13200..13229 , 13230..13259 , 13260..13289 , 13290..13319 , 13320..13349 , 13350..13379 , 13380..13409 , 13410..13439 , 13440..13469 , 13470..13499 , 13500..13529 , 13530..13559 , 13560..13589 , 13590..13619 , 13620..13649 , 13650..13679 , 13680..13709 , 13710..13739 , 13740..13769 , 13770..13799 , 13800..13829 , 13830..13859 , 13860..13889 , 13890..13919 , 13920..13949 , 13950..13979 , 13980..14009 , 14010..14039 , 14040..14069 , 14070..14099 , 14100..14129 , 14130..14159 , 14160..14189 , 14190..14219 , 14220..14249 , 14250..14279 , 14280..14309 , 14310..14339 , 14340..14369 , 14370..14399 , 14400..14429 , 14430..14459 , 14460..14489 , 14490..14519 , 14520..14549 , 14550..14579 , 14580..14609 , 14610..14639 , 14640..14669 , 14670..14699 , 14700..14729 , 14730..14759 , 14760..14789 , 14790..14819 , 14820..14849 , 14850..14879 , 14880..14909 , 14910..14939 , 14940..14969 , 14970..14999 , 15000..15029 , 15030..15059 , 15060..15089 , 15090..15119 , 15120..15149 , 15150..15179 , 15180..15209 , 15210..15239 , 15240..15269 , 15270..15299 , 15300..15329 , 15330..15359 , 15360..15389 , 15390..15419 , 15420..15449 , 15450..15479 , 15480..15509 , 15510..15539 , 15540..15569 , 15570..15599 , 15600..15629 , 15630..15659 , 15660..15689 , 15690..15719 , 15720..15749 , 15750..15779 , 15780..15809 , 15810..15839 , 15840..15869 , 15870..15899 , 15900..15929 , 15930..15959 , 15960..15989 , 15990..16019 , 16020..16049 , 16050..16079 , 16080..16109 , 16110..16139 , 16140..16169 , 16170..16199 , 16200..16229 , 16230..16259 , 16260..16289 , 16290..16319 , 16320..16349 , 16350..16379 , 16380..16409 , 16410..16439 , 16440..16469 , 16470..16499 , 16500..16529 , 16530..16559 , 16560..16589 , 16590..16619 , 16620..16649 , 16650..16679 , 16680..16709 , 16710..16739 , 16740..16769 , 16770..16799 , 16800..16829 , 16830..16859 , 16860..16889 , 16890..16919 , 16920..16949 , 16950..16979 , 16980..17009 , 17010..17039 , 17040..17069 , 17070..17099 , 17100..17129 , 17130..17159 , 17160..17189 , 17190..17219 , 17220..17249 , 17250..17279 , 17280..17309 , 17310..17339 , 17340..17369 , 17370..17399 , 17400..17429 , 17430..17459 , 17460..17489 , 17490..17519 , 17520..17549 , 17550..17579 , 17580..17609 , 17610..17639 , 17640..17669 , 17670..17699 , 17700..17729 , 17730..17759 , 17760..17789 , 17790..17819 , 17820..17849 , 17850..17879 , 17880..17909 , 17910..17939 , 17940..17969 , 17970..17999 , 18000..18029 , 18030..18059 , 18060..18089 , 18090..18119 , 18120..18149 , 18150..18179 , 18180..18209 , 18210..18239 , 18240..18269 , 18270..18299 , 18300..18329 , 18330..18359 , 18360..18389 , 18390..18419 , 18420..18449 , 18450..18479 , 18480..18509 , 18510..18539 , 18540..18569 , 18570..18599 , 18600..18629 , 18630..18659 , 18660..18689 , 18690..18719 , 18720..18749 , 18750..18779 , 18780..18809 , 18810..18839 , 18840..18869 , 18870..18899 , 18900..18929 , 18930..18959 , 18960..18989 , 18990..19019 , 19020..19049 , 19050..19079 , 19080..19109 , 19110..19139 , 19140..19169 , 19170..19199 , 19200..19229 , 19230..19259 , 19260..19289 , 19290..19319 , 19320..19349 , 19350..19379 , 19380..19409 , 19410..19439 , 19440..19469 , 19470..19499 , 19500..19529 , 19530..19559 , 19560..19589 , 19590..19619 , 19620..19649 , 19650..19679 , 19680..19709 , 19710..19739 , 19740..19769 , 19770..19799 , 19800..19829 , 19830..19859 , 19860..19889 , 19890..19919 , 19920..19949 , 19950..19979 , 19980..20009 , 20010..20039 , 20040..20069 , 20070..20099 , 20100..20129 , 20130..20159 , 20160..20189 , 20190..20219 , 20220..20249 , 20250..20279 , 20280..20309 , 20310..20339 , 20340..20369 , 20370..20399 , 20400..20429 , 20430..20459 , 20460..20489 , 20490..20519 , 20520..20549 , 20550..20579 , 20580..20609 , 20610..20639 , 20640..20669 , 20670..20699 , 20700..20729 , 20730..20759 , 20760..20789 , 20790..20819 , 20820..20849 , 20850..20879 , 20880..20909 , 20910..20939 , 20940..20969 , 20970..20999 , 21000..21029 , 21030..21059 , 21060..21089 , 21090..21119 , 21120..21149 , 21150..21179 , 21180..21209 , 21210..21239 , 21240..21269 , 21270..21299 , 21300..21329 , 21330..21359 , 21360..21389 , 21390..21419 , 21420..21449 , 21450..21479 , 21480..21509 , 21510..21539 , 21540..21569 , 21570..21599 , 21600..21629 , 21630..21659 , 21660..21689 , 21690..21719 , 21720..21749 , 21750..21779 , 21780..21809 , 21810..21839 , 21840..21869 , 21870..21899 , 21900..21929 , 21930..21959 , 21960..21989 , 21990..22019 , 22020..22049 , 22050..22079 , 22080..22109 , 22110..22139 , 22140..22169 , 22170..22199 , 22200..22229 , 22230..22259 , 22260..22289 , 22290..22319 , 22320..22349 , 22350..22379 , 22380..22409 , 22410..22439 , 22440..22469 , 22470..22499 , 22500..22529 , 22530..22559 , 22560..22589 , 22590..22619 , 22620..22649 , 22650..22679 , 22680..22709 , 22710..22739 , 22740..22769 , 22770..22799 , 22800..22829 , 22830..22859 , 22860..22889 , 22890..22919 , 22920..22949 , 22950..22979 , 22980..23009 , 23010..23039 , 23040..23069 , 23070..23099 , 23100..23129 , 23130..23159 , 23160..23189 , 23190..23219 , 23220..23249 , 23250..23279 , 23280..23309 , 23310..23339 , 23340..23369 , 23370..23399 , 23400..23429 , 23430..23459 , 23460..23489 , 23490..23519 , 23520..23549 , 23550..23579 , 23580..23609 , 23610..23639 , 23640..23669 , 23670..23699 , 23700..23729 , 23730..23759 , 23760..23789 , 23790..23819 , 23820..23849 , 23850..23879 , 23880..23909 , 23910..23939 , 23940..23969 , 23970..23999 , 24000..24029 , 24030..24059 , 24060..24089 , 24090..24119 , 24120..24149 , 24150..24179 , 24180..24209 , 24210..24239 , 24240..24269 , 24270..24299 , 24300..24329 , 24330..24359 , 24360..24389 , 24390..24419 , 24420..24449 , 24450..24479 , 24480..24509 , 24510..24539 , 24540..24569 , 24570..24599 , 24600..24629 , 24630..24659 , 24660..24689 , 24690..24719 , 24720..24749 , 24750..24779 , 24780..24809 , 24810..24839 , 24840..24869 , 24870..24899 , 24900..24929 , 24930..24959 , 24960..24989 , 24990..25019 , 25020..25049 , 25050..25079 , 25080..25109 , 25110..25139 , 25140..25169 , 25170..25199 , 25200..25229 , 25230..25259 , 25260..25289 , 25290..25319 , 25320..25349 , 25350..25379 , 25380..25409 , 25410..25439 , 25440..25469 , 25470..25499 , 25500..25529 , 25530..25559 , 25560..25589 , 25590..25619 , 25620..25649 , 25650..25679 , 25680..25709 , 25710..25739 , 25740..25769 , 25770..25799 , 25800..25829 , 25830..25859 , 25860..25889 , 25890..25919 , 25920..25949 , 25950..25979 , 25980..26009 , 26010..26039 , 26040..26069 , 26070..26099 , 26100..26129 , 26130..26159 , 26160..26189 , 26190..26219 , 26220..26249 , 26250..26279 , 26280..26309 , 26310..26339 , 26340..26369 , 26370..26399 , 26400..26429 , 26430..26459 , 26460..26489 , 26490..26519 , 26520..26549 , 26550..26579 , 26580..26609 , 26610..26639 , 26640..26669 , 26670..26699 , 26700..26729 , 26730..26759 , 26760..26789 , 26790..26819 , 26820..26849 , 26850..26879 , 26880..26909 , 26910..26939 , 26940..26969 , 26970..26999 , 27000..27029 , 27030..27059 , 27060..27089 , 27090..27119 , 27120..27149 , 27150..27179 , 27180..27209 , 27210..27239 , 27240..27269 , 27270..27299 , 27300..27329 , 27330..27359 , 27360..27389 , 27390..27419 , 27420..27449 , 27450..27479 , 27480..27509 , 27510..27539 , 27540..27569 , 27570..27599 , 27600..27629 , 27630..27659 , 27660..27689 , 27690..27719 , 27720..27749 , 27750..27779 , 27780..27809 , 27810..27839 , 27840..27869 , 27870..27899 , 27900..27929 , 27930..27959 , 27960..27989 , 27990..28019 , 28020..28049 , 28050..28079 , 28080..28109 , 28110..28139 , 28140..28169 , 28170..28199 , 28200..28229 , 28230..28259 , 28260..28289 , 28290..28319 , 28320..28349 , 28350..28379 , 28380..28409 , 28410..28439 , 28440..28469 , 28470..28499 , 28500..28529 , 28530..28559 , 28560..28589 , 28590..28619 , 28620..28649 , 28650..28679 , 28680..28709 , 28710..28739 , 28740..28769 , 28770..28799 , 28800..28829 , 28830..28859 , 28860..28889 , 28890..28919 , 28920..28949 , 28950..28979 , 28980..29009 , 29010..29039 , 29040..29069 , 29070..29099 , 29100..29129 , 29130..29159 , 29160..29189 , 29190..29219 , 29220..29249 , 29250..29279 , 29280..29309 , 29310..29339 , 29340..29369 , 29370..29399 , 29400..29429 , 29430..29459 , 29460..29489 , 29490..29519 , 29520..29549 , 29550..29579 , 29580..29609 , 29610..29639 , 29640..29669 , 29670..29699 , 29700..29729 , 29730..29759 , 29760..29789 , 29790..29819 , 29820..29849 , 29850..29879 , 29880..29909 , 29910..29939 , 29940..29969 , 29970..29999 , 30000..30029 , 30030..30059 , 30060..30089 , 30090..30119 , 30120..30149 , 30150..30179 , 30180..30209 , 30210..30239 , 30240..30269 , 30270..30299 , 30300..30329 , 30330..30359 , 30360..30389 , 30390..30419 , 30420..30449 , 30450..30479 , 30480..30509 , 30510..30539 , 30540..30569 , 30570..30599 , 30600..30629 , 30630..30659 , 30660..30689 , 30690..30719 , 30720..30749 , 30750..30779 , 30780..30809 , 30810..30839 , 30840..30869 , 30870..30899 , 30900..30929 , 30930..30959 , 30960..30989, >>Next

 Sequences-and-series/315886: The next number in the sequence 1, 4/3, 2, 16/5, 16/3, 64/7……. is (A) 128 / 9 (B) 92 / 5 (C) 16 (D) 108 / 7 (E) None of these 1 solutions Answer 225986 by Alan3354(30993)   on 2010-06-20 09:10:01 (Show Source): You can put this solution on YOUR website!The next number in the sequence 1, 4/3, 2, 16/5, 16/3, 64/7……. is (A) 128 / 9 (B) 92 / 5 (C) 16 (D) 108 / 7 (E) None of these ----------------- 1, 4/3, 2, 16/5, 16/3, 64/7 = 2/2, 4/3, 8/4, 16/5, 32/6, 64/7, then 128/8 = 16 ----- The numerator is doubled, the denominator is increased by 1.
 Rational-functions/315862: Rewrite with a rational exponent. ^7sqrt221 solutions Answer 225984 by Alan3354(30993)   on 2010-06-20 08:39:50 (Show Source): You can put this solution on YOUR website!I don't know what ^7sqrt22 means.
 Linear_Equations_And_Systems_Word_Problems/315881: a student is trying to solve the equation (x + 10)(x - 10)=7. The student has set x + 7 and x - 10 = 7 and found that two solutions x=3, x=17. The student checks the results by plugging inthe solutions into the original equation and finds they do not work. How would you advise the student?1 solutions Answer 225983 by Alan3354(30993)   on 2010-06-20 08:37:57 (Show Source): You can put this solution on YOUR website!I'd tell him he's doing it wrong.
 Expressions-with-variables/315813: 4+5i/6+i write in a+bi form1 solutions Answer 225948 by Alan3354(30993)   on 2010-06-19 21:47:06 (Show Source): You can put this solution on YOUR website!4+5i/6+i write in a+bi form ------ Multiply the numerator and the denominator by the conjugate of the DEN, 6-i
 logarithm/315818: solve. where appropriate, include approximations to the nearest thousandth. if no solution exists, state this. 2^(x+1) = 41 solutions Answer 225947 by Alan3354(30993)   on 2010-06-19 21:45:42 (Show Source): You can put this solution on YOUR website!2^(x+1) = 4 (x+1)*log(2) = log(4) x+1 = log(4)/log(2) = 2 x = 1
 logarithm/315778: solve for y y = -log(base4)0.75 y = -log(base4)0.50 y = -log(base4)0.25 1 solutions Answer 225946 by Alan3354(30993)   on 2010-06-19 21:37:07 (Show Source): You can put this solution on YOUR website!solve for y y = -log(base4)0.75 y = -log(base4)0.50 y = -log(base4)0.25 ---------------------- Use the base change formula. y = -log(base4)0.25 y = - log(0.25)/log(4) y = 1 ---------- Do the others the same way.
 Functions/315770: I do not know how to calculate this function. Please help me to solve this problem (sin5x)^2^x^-^3 thank you a million times1 solutions Answer 225943 by Alan3354(30993)   on 2010-06-19 21:33:32 (Show Source): You can put this solution on YOUR website!That's not clear. what is x^-^3 ???
 Linear-equations/315814: I need help on how to get a solution. Here is an example of the type of problem it is -3/5 = -1/9 - 3/4 Please help me with this type of problem, I've tried so many different solutions but I cannot get the answer right.1 solutions Answer 225942 by Alan3354(30993)   on 2010-06-19 21:30:38 (Show Source): You can put this solution on YOUR website!I need help on how to get a solution. Here is an example of the type of problem it is -3/5 = -1/9 - 3/4 -------------------- -3/5 is not equal to -1/9 - 3/4 You state that it is, it is not. Where did you get such a problem?
 logarithm/315787: log (base 5) (2x+3) = 3 also, show me, step by step, how exactly, you can solve this problem1 solutions Answer 225925 by Alan3354(30993)   on 2010-06-19 19:04:34 (Show Source): You can put this solution on YOUR website!log (base 5) (2x+3) = 3 Use both sides as the exponent of the base 2x+3 = 125 2x = 122 x = 61
 Quadratic_Equations/315700: Express 4√1875 into simplest form? Simplify 4√(1625)³1 solutions Answer 225873 by Alan3354(30993)   on 2010-06-19 08:47:23 (Show Source): You can put this solution on YOUR website!The other tutor put (25)^4 when it should be 5^4, but got the right answer.
 Trigonometry-basics/315698: Hi, could you please help me with solving sin{2theta}=-cos{{7pi}/4} for 0 to 2pi Many thanks, Sam1 solutions Answer 225872 by Alan3354(30993)   on 2010-06-19 08:44:37 (Show Source): You can put this solution on YOUR website!sin{2theta}=-cos{{7pi}/4} for 0 to 2pi --------------------- 7pi/4 = 315º cos(7pi/4) = sqrt(2)/2 sin(2T) = -sqrt(2)/2 2T = 225, 315, 585, 675 2T = 5pi/4, 7pi/4, 13pi/4, 15pi/4 theta = 5pi/8, 7pi/8, 13pi/8, 15pi/8
Expressions-with-variables/315595: Solve. Round results to the nearest thousandth.x^2+77x-13=0
1 solutions

Answer 225818 by Alan3354(30993)   on 2010-06-18 19:04:37 (Show Source):
You can put this solution on YOUR website!
 Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc) Quadratic equation (in our case ) has the following solutons: For these solutions to exist, the discriminant should not be a negative number. First, we need to compute the discriminant : . Discriminant d=5981 is greater than zero. That means that there are two solutions: . Quadratic expression can be factored: Again, the answer is: 0.168462601970617, -77.1684626019706. Here's your graph:

 Volume/315473: A rectangular box has volume 15 cm^3. If the length, width, and height are doubled, what is the volume of the resulting box?1 solutions Answer 225709 by Alan3354(30993)   on 2010-06-18 08:22:09 (Show Source): You can put this solution on YOUR website! 8*15 = 120 cc --------------- Volume is a function of the cube of the dimensions. Multiplying the edge dimension, or the radius of a sphere, etc, by F gives a volume change of F^3. --------------------- Surface area is a function of the square, a factor of F change gives F^2 change in area.
 Polynomials-and-rational-expressions/315163: I need help with this equation below. 1. Find the least common multiple (LCM)of (7+6u),(49-36u^2) and (7-6u)1 solutions Answer 225623 by Alan3354(30993)   on 2010-06-17 18:00:09 (Show Source): You can put this solution on YOUR website!I need help with this equation below. 1. Find the least common multiple (LCM)of (7+6u),(49-36u^2) and (7-6u) ---------------------- There is no equation. Equations have equal signs. Equal, equate, equation. Equations are often solved. you have nothing to solve. --------------- Your problem states: Find the least common multiple (LCM)of (7+6u),(49-36u^2) and (7-6u) 49 - 36u^2 is the product of the other two terms, so it's the LCM.
 Linear-equations/315316: Can you show me how you would graph the line with slope 2/3 passing through the point (4,1)1 solutions Answer 225614 by Alan3354(30993)   on 2010-06-17 17:17:10 (Show Source): You can put this solution on YOUR website!It's a straight line, so 2 points are needed. One is given, (4,1) A slope of 2/3 means that for 3 squares in the x direction, you move 2 squares in the y direction. Since it's +2/3, both moves are + or both minus. Start at (4,1). Add 2 to the y and 3 to the x --> (7,3) Add any multiples, eg (4+3n,1+2n) where n is any number, + or minus. --> (10,7), (1,-1), etc Pick 2 points, plot them draw a line thru them.
 Linear-equations/315298: Can you show/explain how to graph the line with the slope 3 passing through the points (-2,1)?1 solutions Answer 225581 by Alan3354(30993)   on 2010-06-17 16:27:17 (Show Source): You can put this solution on YOUR website!A line and a point example. Write in standard form the eqation of a line that satisfies the given conditions. Perpendicular to 9x+3y=36, through (1,2) ----------------- Find the slope of the line. Do that by putting the equation in slope-intercept form, y = mx + b. That means solve for y. 9x+3y = 36 3y= - 9x + 36 y = -3x + 12 The slope, m = -3 ------------------ The slope of lines parallel is the same. The slope of lines perpendicular is the negative inverse, m = +1/3 ---------------- Use y = mx + b and the point (1,2) to find b. 2 = (1/3)*1 + b b = 5/3 The equation is y = (1/3)x + 5/3 (slope-intercept form) x - 3y = -5 (standard form) ------------------------ For further assistance, or to check your work, email me via the thank you note, or at Moral Loophole@aol.com
 Linear-equations/315299: can you help me fins an equation of the line that is parallel to the line y=8/5x+5 and that passes through the point (8,-7)?1 solutions Answer 225580 by Alan3354(30993)   on 2010-06-17 16:26:55 (Show Source): You can put this solution on YOUR website!A line and a point example. Write in standard form the eqation of a line that satisfies the given conditions. Perpendicular to 9x+3y=36, through (1,2) ----------------- Find the slope of the line. Do that by putting the equation in slope-intercept form, y = mx + b. That means solve for y. 9x+3y = 36 3y= - 9x + 36 y = -3x + 12 The slope, m = -3 ------------------ The slope of lines parallel is the same. The slope of lines perpendicular is the negative inverse, m = +1/3 ---------------- Use y = mx + b and the point (1,2) to find b. 2 = (1/3)*1 + b b = 5/3 The equation is y = (1/3)x + 5/3 (slope-intercept form) x - 3y = -5 (standard form) ------------------------ For further assistance, or to check your work, email me via the thank you note, or at Moral Loophole@aol.com
 logarithm/315194: I have another question I am stuck on. Evaluate the logarithmic equation for three values of x that are greater than -1, three values of x that are between 0 and-1, and at x = -1. Show your work. Use the resulting ordered pairs to plot the graph. State the equation of the line asymptotic to the graph. y=log2(x+2)1 solutions Answer 225492 by Alan3354(30993)   on 2010-06-17 10:53:43 (Show Source): You can put this solution on YOUR website!I have another question I am stuck on. Evaluate the logarithmic equation for three values of x that are greater than -1, three values of x that are between 0 and-1, and at x = -1. Show your work. Use the resulting ordered pairs to plot the graph. State the equation of the line asymptotic to the graph. y=log2(x+2) ----------------- I think you mean log base 2 ? ------------------------ Calculators don't have logs base 2, so you use the base change formula ------------------ You sub the values for x, and find y. It says 3 values > -1 and 3 values between -1 and 0. The values between -1 and 0 will be greater than -1 ??? That's redundant. --------------- x y -1 0 -0.8 0.263034406 -0.6 0.485426827 -0.4 0.678071905 -0.2 0.847996907 0 1 0.2 1.137503524 0.4 1.263034406 0.6 1.378511623 0.8 1.485426827 1 1.584962501 I used Excel email me at moral loophole@aol.com if you want a graph
 Travel_Word_Problems/315044: A train left a station trveling 100km/h. a second train left 2 hours later and headed in the same direction at 125km/h. After many hours did the second train overtake the first train?1 solutions Answer 225372 by Alan3354(30993)   on 2010-06-16 21:50:17 (Show Source): You can put this solution on YOUR website!A train left a station trveling 100km/h. a second train left 2 hours later and headed in the same direction at 125km/h. After many hours did the second train overtake the first train? -------------------- In 2 hours, the 1st train went 200 km (100 x 2) The 2nd train is gaining on the 1st train at 25 km/hr (125 - 100) 200/25 = 8 hours.
 Polynomials-and-rational-expressions/315072: 3x^3+24x^2+48x1 solutions Answer 225371 by Alan3354(30993)   on 2010-06-16 21:48:35 (Show Source): You can put this solution on YOUR website!Do you have a question?
 Expressions-with-variables/315074: y^4-8y^2-91 solutions Answer 225370 by Alan3354(30993)   on 2010-06-16 21:48:04 (Show Source): You can put this solution on YOUR website!Do you have a question?
 Rate-of-work-word-problems/315079: Sam can paint a house in 4 hours, John can paint the same house in 6 hours. How long will it take for both of them to paint the house together?1 solutions Answer 225368 by Alan3354(30993)   on 2010-06-16 21:46:20 (Show Source): You can put this solution on YOUR website!Sam does 1/4 of the house per hour. John does 1/6 per hour. ---------------- What part do they do together?
 Graphs/315051: find all points having an x coordinate of 9, whose distance from the point (3,-2) is 101 solutions Answer 225364 by Alan3354(30993)   on 2010-06-16 21:35:53 (Show Source): You can put this solution on YOUR website!find all points having an x coordinate of 9, whose distance from the point (3,-2) is 10 ------------------- Find the circle of radius 10 with its center at (3,-2) That's (x-3)^2 + (y+2)^2 = 100 Sub 9 for x 6^2 + (y^2 + 4y + 4) = 100 y^2 + 4y + 4 = 64 y^2 + 4y - 60 = 0 Solve for y y = (-4/2) ± sqrt(16 + 240)/2 y = -2 ± 8 -------------- --> (9,6) and (9,-10) Don't make it a thesis.
 Linear-equations/315055: How to find the equation of the line tha contains the point (-1, 4) and is parallel to the line 2x - 3y = 5. I can get the slope of the given line. But i am getting lost using the point slope formula once I get to y -4 = 2/3x + 2/3. Could you please work through the entire equation without leaving any step out please.. Thank you so much Grateful Sandy1 solutions Answer 225349 by Alan3354(30993)   on 2010-06-16 20:40:55 (Show Source): You can put this solution on YOUR website!How to find the equation of the line tha contains the point (-1, 4) and is parallel to the line 2x - 3y = 5. I can get the slope of the given line. But i am getting lost using the point slope formula once I get to y -4 = 2/3x + 2/3. Could you please work through the entire equation without leaving any step out please.. Thank you so much ---------------------------- y -4 = 2/3x + 2/3 You can add 4 to both sides to get y = (2/3)x + 14/3, but it's not necessary. The slope is 2/3, that's all you need to know. Parallel lines have the same slope. ------------------- Use y = mx + b and the point to find b. 4 = (2/3)*-1 + b b = 4 - 2/3 = 10/3 Now you have m and b --> y = (2/3)x + 10/3
 Polynomials-and-rational-expressions/315052: Factor completely. 6x^2 + 8x + 2 I do not understand how to get this, but the answer in the back of the book is 2(3x + 1)(x +1)1 solutions Answer 225346 by Alan3354(30993)   on 2010-06-16 20:36:06 (Show Source): You can put this solution on YOUR website!Factor completely. 6x^2 + 8x + 2 All the coefficients are even, so factor out a 2 = 2*(3x^2 + 4x + 1) -------------- The middle coefficient is the sum of the other 2. = 2(3x+1)*(x+1)
 Travel_Word_Problems/315024: x - y = 19 2x + y = 2 please help me work this out1 solutions Answer 225334 by Alan3354(30993)   on 2010-06-16 19:13:22 (Show Source): You can put this solution on YOUR website!x - y = 19 2x + y = 2 please help me work this out ------------- What kind of help would you like? ------------- We can start with, what is it you want to do?
 Linear_Algebra/314996: x + 2y + 3z = 11 1 solutions Answer 225327 by Alan3354(30993)   on 2010-06-16 18:04:13 (Show Source): You can put this solution on YOUR website!That's the equation of a plane in 3-space. Do you have a question?
 Linear-equations/315001: write the equation of a line that passes through the point (-2,2) and is parallel to the line whose equation is 4x-y=8. can sombody step by step show me how this is done1 solutions Answer 225326 by Alan3354(30993)   on 2010-06-16 18:02:14 (Show Source): You can put this solution on YOUR website!A line and a point example. Write in standard form the eqation of a line that satisfies the given conditions. Perpendicular to 9x+3y=36, through (1,2) ----------------- Find the slope of the line. Do that by putting the equation in slope-intercept form, y = mx + b. That means solve for y. 9x+3y = 36 3y= - 9x + 36 y = -3x + 12 The slope, m = -3 ------------------ The slope of lines parallel is the same. The slope of lines perpendicular is the negative inverse, m = +1/3 ---------------- Use y = mx + b and the point (1,2) to find b. 2 = (1/3)*1 + b b = 5/3 The equation is y = (1/3)x + 5/3 (slope-intercept form) x - 3y = -5 (standard form) ------------------------ For further assistance, or to check your work, email me via the thank you note, or at Moral Loophole@aol.com
 test/314223: What is the magnifying level of a telescope if the length is 1500 mm and 9 mm?1 solutions Answer 224678 by Alan3354(30993)   on 2010-06-14 18:39:39 (Show Source): You can put this solution on YOUR website!If those are the focal lengths of the mirror and the eyepiece, or the objective lens and the eyepiece for a refractor, it's 1500/9 = 500/3 ----------- Don't buy a telescope based only on magnification. The light gathering is much more important. A lot of cheap, useless telescopes are sold with big mag numbers, and they're worthless.
 Linear-equations/314291: which of the following equations decribes the line shown below? check all that apply. (-4,10) and (-7,-5)1 solutions Answer 224677 by Alan3354(30993)   on 2010-06-14 18:35:23 (Show Source): You can put this solution on YOUR website!No line is shown.
 Equations/314299: what is the equation to 5+2x=371 solutions Answer 224676 by Alan3354(30993)   on 2010-06-14 18:34:58 (Show Source): You can put this solution on YOUR website!I don't know what that means. I don't think it's my fault.