Tutor:

New! Get regular updates about newly solved problems via algebra.com's RSS system.

---

Recent problems solved by 'checkley71'

checkley71 answered: 8399 problems
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, >>Next

decimal-numbers/42320: This question is from textbook prealgebra -9y=-0.162 1 solutions Answer 27465 by checkley71(8403)   on 2006-06-15 21:29:04 (Show Source): You can put this solution on YOUR website! -9y=-0.162 or y=-0.162/-9 or y=.018

Average/42344: 30% of my product is priced at $4.21 40% of my product is priced at $19.15 15% of my product is priced at $38.30 15% of my product is priced at $0.00 What is my average price? 1 solutions Answer 27462 by checkley71(8403)   on 2006-06-15 21:21:27 (Show Source): You can put this solution on YOUR website! .3*4.21+.4*19.15+.15*38.30+.15*0=1.263+7.66+5.745+0=14.668 is the average price of all products.

Equations/42133: Floor plans for a building have the four corners of a room located at the points (2,3),(11,6),(-3,18) and (8,21). Determine whether the side through the points (2,3) and (11,6) is perpendicular to the side through the points (2,3) and (-2,18) 1 solutions Answer 27295 by checkley71(8403)   on 2006-06-14 20:43:25 (Show Source): You can put this solution on YOUR website! NOT PERPENDICULAR BECAUSE THE SLOPE OF THE LINE THROUGH (2,3) & (11,6)IS (6-3)/(11-2) OR 3/9 OR 1/3 AND THE LINE THROUGH (2,3) & (-2,18) IS (18-3)/(-2-2) OR 15/-4 WHICH IS NOT THE NEGATIVE INVERSE OF 1/3 THEREFORE THE LINES ARE NOT PERPENDICULAR.

Equations/42135: Write the equation of the line with given slope and y-intercept. Then graph each line using the slope and y-intercept. slpoe: 3/4;y-intercept;(0,8) 1 solutions Answer 27294 by checkley71(8403)   on 2006-06-14 20:36:24 (Show Source): You can put this solution on YOUR website! Y=3/4X+8

percentage/42139: I need some help with this problem: I need to compare the population per square mile in Asia to the population per square mile in NOrth American for the year 2000. Population for North America was 305,000,000 " " Asia was 4,028,000,000 Thank you, sher 1 solutions Answer 27293 by checkley71(8403)   on 2006-06-14 20:34:13 (Show Source): You can put this solution on YOUR website! IN ORDER TO DETERMINE THE POPULATION PER SQUARE MILE IN BOTH CONTINENTS YOU NEED TO DEFINE THE SQUARE MILES IN EACH CONTINENT.

percentage/42142: Can someone help me with this problem? What is the percent increase in the population for all six inhabited continents, excluding Asia, from 1950 to 2000? Population in 1950 total is 965,000,000 Population in 2000 total is 2,251,000,000 Thanks, Sher 1 solutions Answer 27292 by checkley71(8403)   on 2006-06-14 20:31:21 (Show Source): You can put this solution on YOUR website! 2,251,000,000/965,000,000=233.26424% INCREASE

Equations/42150: Solve the equation (y - 7) - (y + 6) =9y 1 solutions Answer 27291 by checkley71(8403)   on 2006-06-14 20:28:50 (Show Source): You can put this solution on YOUR website! Y-7-Y-6=9Y OR 9Y=-13 OR Y=-13/9

Linear-systems/42149: 1. The sum of three consecutive even numbers is 144. Find the numbers. 2. The sum of 4 consecutive odd integers is -88. Find the numbers. 3. Find three consecutive numbers such that 12 than less three times the first number is the same ad the sum of the other 2. 4.On a map 2 inches represents 35 miles. if two cities are 11 inches apart on a map,how many miles are they apart? 1 solutions Answer 27290 by checkley71(8403)   on 2006-06-14 20:26:40 (Show Source): You can put this solution on YOUR website! X+X+2+X+4=144 OR 3X+6=144 OR 3X=138 OR X=138/3 OR X=46 X+2=48 X+4=50 PROOF 46+48+50=144 OR 144=144 X+X+2+X+4+X+6=-88 OR 4X+12=-88 OR 4X=-100 OR X=-25 X+2=-23 X+4=-21 X+6=-19 PROOF -25-23-21-19=-88 OR -88=-88 NEXT PROBLEM I CAN'T UNDERSTAND????? 2IN/35MILES=11IN/X OR 2X=35*11 OR 2X=385 OR X=385/2 OR X=192.5 MILES

Surface-area/42143: I need help figuring out how to solve this question. Solve for x. 3x – 2y = 6 1 solutions Answer 27289 by checkley71(8403)   on 2006-06-14 20:17:23 (Show Source): You can put this solution on YOUR website! 3X-2Y=6 OR 3X=6+2Y OR X=(6+2Y)/3 OR X=2+2Y/3

Expressions-with-variables/42145: Write two numbers with a difference of 3 1 solutions Answer 27288 by checkley71(8403)   on 2006-06-14 20:15:09 (Show Source): You can put this solution on YOUR website! 6 9 10 13 -5 -8 102 105 -37 -40

Equations/42029: An employee who produces x units per hour earns an hourly wage of y = 0.35x + 11 (in dollars). Find the hourly wage for an employee who produces 2 units per hour. A) $11.40 B) $12.10 C) $12.20 D) $11.70 1 solutions Answer 27160 by checkley71(8403)   on 2006-06-13 22:22:18 (Show Source): You can put this solution on YOUR website! Y=.35X+11 OR Y=.35*2+11 OR Y=.7+11 OR Y=11.7 OR $11.70 PER HOUR

Equations/42033: Determine which two equations represent parallel lines. (a) y = x + 4 (b) y =x – 7 (c) y = 2x + 8 (d) y = 2x – 4 A) (c) and (d) B) (a) and (b) C) (b) and (c) D) (a) and (d) 1 solutions Answer 27159 by checkley71(8403)   on 2006-06-13 22:19:35 (Show Source): You can put this solution on YOUR website! A&B HAVE A SLOPE OF 1 C&D HAVE A SLOPE OF 2

Average/41985: Can someone help me solve this problem? The following scores were recorded on a 200-point final examination: 193, 185, 163, 186, 192, 135, 158, 174, 188, 172, 168, 183, 195, 165, 183 (A) Help me find the mean final examination score. (B) Help me find the median final examination score. (C) What is the mean or median a more useful representatiive of the final examination scores? Write a brief paragraph justifying your response please. Thanks, Sher 1 solutions Answer 27158 by checkley71(8403)   on 2006-06-13 21:07:58 (Show Source): You can put this solution on YOUR website! 135 158 163 165 168 172 174 183 183 185 186 188 192 193 195 A) 2640/15=176 WHICH IS THE MEAN/AVERAGE. B) THE MIDDLE NUMBER IS 183 FOR THE MEDIAN. THE MEAN IS THE NUMERIC AVERAGE OF ALL SCORES WHILE THE MEDIAN IS AN ARBITRARY NUMBER IN THE MIDDLE OF ALL NUMBERS WHEN ARRANGED SEQUENCIALLY. tHEREFORE THE MEAN/AVERAGE IS A BETTER INDICATOR OF THESE NUMBERS.

Graphs/41992: How do you find the x and y intercept of y-2x=5, a. x-intercept located at (– , 0); y-intercept located at (0, 5). b. x-intercept located at (0, 5); y-intercept located at (– , 0). c. x-intercept located at (2, 0); y-intercept located at (0, 5). d. x-intercept located at (– , 0); y-intercept located at (0, 5). these are the choices, I have no idea where to start, thanks ,Lauren 1 solutions Answer 27157 by checkley71(8403)   on 2006-06-13 20:57:18 (Show Source): You can put this solution on YOUR website! Y=2X+5 OR SETTING X=0 WE GET Y=5 OR (0,5) THEN WE SET Y=0 AND GET 2X=-5 OR X=-5/2 OR (-5/2,0) YOU'RE MISSING SOME NUMBERS IN YOUR CHOICE OF ANSWERS. X-INTERCEPT IS (-5/2,0) & THE Y-INTERCEPT IS (0,5)

Miscellaneous_Word_Problems/42020: Bill's exam scores were 90,76,83,72,89,83,85,95,and 91. What is the median of his test scores? ( Show your work ) 1 solutions Answer 27156 by checkley71(8403)   on 2006-06-13 20:51:10 (Show Source): You can put this solution on YOUR website! 72 76 83 83 85 89 90 91 95 THE MEDIAN IS THE MIDDLE NUMBER OR 85 the mean is the same as the average total scores/# of scores or 764/9=84.89

Average/41987: Can someone help me solve this problem? Help me find the median for this set of numbers. 26, 30, 38, 67, 59, 21, 17, 85, 22, 22 Thanks, Lyn 1 solutions Answer 27155 by checkley71(8403)   on 2006-06-13 20:48:37 (Show Source): You can put this solution on YOUR website! 17 21 22 22 26 30 38 59 67 85 THE MEDIAN IS THE MIDDLE NUMBER BUT WE HAVE AN EVEN NUMBER THEREFORE THE MEDIAN IS BETWEEN THE MIDDLE TWO NUMBERS 26 & 30 OR (26+30)/2 OR 28

decimal-numbers/42019: Round 413.74 to fine decimal places. 1 solutions Answer 27154 by checkley71(8403)   on 2006-06-13 20:42:50 (Show Source): You can put this solution on YOUR website! WHAT IS FINE DECIMAL PLACES?

decimal-numbers/42012: Please help me with this problem. Write in order from least to greatest: 3.18, 1.38, 31.8, 13.08 Thank you 1 solutions Answer 27153 by checkley71(8403)   on 2006-06-13 20:41:24 (Show Source): You can put this solution on YOUR website! 01.38 03.18 13.08 31.80 adding a few zeroes helps then line them up as shown and start from the left side locating the smallest first, second, third, etc. digits.

decimal-numbers/42016: Write the decimal number 0.394 as a fraction and simplify.( show your work) Thank you. 1 solutions Answer 27152 by checkley71(8403)   on 2006-06-13 20:36:51 (Show Source): You can put this solution on YOUR website! .394 =394/1000 or dividing both by 2 we get 197/500

decimal-numbers/42014: Please help with this problem. Change 5/9 to a decimal. Round to three decimal places.( Show your work) Thank you. 1 solutions Answer 27151 by checkley71(8403)   on 2006-06-13 20:34:12 (Show Source): You can put this solution on YOUR website! 5 divided by 9=.5555555 or .556 __.5555__ 9) 5.0000 45 --- 50 45 --- 50 45 --- 50 45 ---- 5

Travel_Word_Problems/41999: A train travels 150 kilometers in the same time it takes a plane to travel 400 Kilometers. If the speed of the plane is 20 kilometers per hour less than 3 times the speed of the train , find both speeds? 1 solutions Answer 27150 by checkley71(8403)   on 2006-06-13 20:28:20 (Show Source): You can put this solution on YOUR website! 150/x=400/3(x-20) or 400x=450x-9000 or 50x=9000 or x=180 speed of the train & 3(180-20) or 3*160=480 speed of the plane

Exponents-negative-and-fractional/42009: divide 40x by 5x over 64y by 8y home school. education direct my answer 25x over 64y 1 solutions Answer 27149 by checkley71(8403)   on 2006-06-13 20:17:06 (Show Source): You can put this solution on YOUR website! (40x/5x)/(64y/8y) or 40x/5x=8 & 64y/8y=8 thus (8)/(8) or 1

Expressions-with-variables/42006: if the slope of a line is undefined, then the line must be: a.horizontal b.vertical c.diagonal d.other Which answer is correct? 1 solutions Answer 27148 by checkley71(8403)   on 2006-06-13 20:13:11 (Show Source): You can put this solution on YOUR website! ANS. IS b) vertical because the formula is (y2-y1)/(x2-x1) & if the x coordinates are the same then the denominator is =0 which makes the fraction/slope undefined.

Expressions-with-variables/42005: The slope of a line parallel to equals what? 1 solutions Answer 27147 by checkley71(8403)   on 2006-06-13 20:07:28 (Show Source): You can put this solution on YOUR website! Y=X+12 OR THE SLOPE IS 1 & ALL LINES PARRALLEL TO THIS LINE HAS A SLOPE OF 1

Expressions-with-variables/42000: Solve by factoring: 1 solutions Answer 27146 by checkley71(8403)   on 2006-06-13 20:05:40 (Show Source): You can put this solution on YOUR website! X~2+2X-24=0 OR (X+6)(X-4)=0 OR X=-6 & X=4

Equations/41994: This question is from textbook please help me asap 3. a. Using the formula C=5/9 (F-32), find the Celsius reading corresponding to 32 degrees F, the freezing point of water. b. Normal body temp. is 98.6 degrees F. What is this in the Celsius scale? 1 solutions Answer 27145 by checkley71(8403)   on 2006-06-13 20:01:54 (Show Source): You can put this solution on YOUR website! C=5/9(F-32) OR C=5/9(32-32) OR C=5/9*0 OR C=0 C=5/9(98.6-32) OR C=5/9(66.6) OR C=333/9 OR C=37

Square-cubic-other-roots/41998: Solve. 1 solutions Answer 27144 by checkley71(8403)   on 2006-06-13 19:57:31 (Show Source): You can put this solution on YOUR website! 5/3X=4/(5+X) OR 12X=25+5X OR 7X=25 OR X=25/7

Distributive-associative-commutative-properties/41997: How do I solve this equation? 3x+5(x-1)=11 1 solutions Answer 27143 by checkley71(8403)   on 2006-06-13 19:50:40 (Show Source): You can put this solution on YOUR website! 3X+5(X-1)=11 OR 3X+5X-5=11 OR 8X=11+5 OR 8X=16 OR X=16/2 OR X=2 PROOF 3*2+5(2-1)=11 OR 6+5*1=11 OR 6+5=11 OR 11=11

percentage/41995: What number is 15 and 1/2 percentof 1,200? Please show how you got this answer and work it out for me! Thank you. p.s. please respond before Thursday. 1 solutions Answer 27142 by checkley71(8403)   on 2006-06-13 19:48:16 (Show Source): You can put this solution on YOUR website! 15 1/2% IS 15.5% OR MOVE THE DECIMAL POINT TWO PLACES TO THE LEFT(MULTIPLY BY 100 TO CHANGE % TO A DECIMAL) WE GET .155 NOW WE MULTIPLY .155*1,200=186

Problems-with-consecutive-odd-even-integers/41993: Find two consecutive odd integers such that the square of the larger is 3 less than 12 times the smaller 1 solutions Answer 27141 by checkley71(8403)   on 2006-06-13 19:43:07 (Show Source): You can put this solution on YOUR website! X & (X+2) ARE THE TWO CONSECUTIVE ODD NUMBERS. THEN (X+2)~2+3=12X OR X~2+4X+4+3=12X OR X~2-8X+7=0 OR (X-7)(X-1)=0 OR X=7 & X=1 THUS 7 & 9 ARE THE CONSECUTIVE ODD NUMBERS 9~2=81 & 12*7=84 THUS THE SQUARE OF THE LARGER (81) IS 3 LESS THE 12*7=84

Points-lines-and-rays/41991: This question is from textbook The side of a square is 4 cm longer than a side of an equilateral triangle. The perimeter of the square 24 cm longer than the perimeter of the triangle. Find the lengths of a side of the square and the side of the triangle. 1 solutions Answer 27140 by checkley71(8403)   on 2006-06-13 19:28:19 (Show Source): You can put this solution on YOUR website! THE REASON FOR ADDING THE 24 TO THE TRIANGLE IS BECAUSE IT IS 24 CM SHORT OF THE SQUARES PERIMETER THUS TO BALANCE THE EQUATION YOU MUST EITHER ADD THE 24 TO THE PERIMETER OF THE TRIANGLE OR SUBTRACT 24 FROM THE PERIMETER OF THE SQUARE SO THE TWO EQUATIONS ARE BALANCED. THE 4 SIDES OF THE SQUARE ARE (X+4) AND THE 3 SIDES OF THE TRIANGLE ARE X. THEN THE PERIMETER OF THE SQUARE IS 4(X+4) OR 4X+16 & THE PERIMETER OF THE TRIANGLE 3X & THE SQUARE 4X+16=3X+24 OR 4X-3X=24-16 OR X=8 TRINGLE SIDES=8 & THE SQUARE SIDES ARE 8+4=12 PROOF 3*8=24 PERIMETER OF THE TRIANGLE & 4(8+4)=4*12=48 & 48-24=24 THE DIFFERENCE IN THE TWO PERIMETERS.