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
Travel_Word_Problems/57169: Two Jets are traveling torward each otherand are 4000km apart. The rate of one jet is 100 km/h faster than the rate of the other. If the jets pass each other after 2.5 hours, what is the rate of the faster jet
1 solutions
Answer 38882 by checkley71(8403)   on 2006-10-19 18:02:02 (Show Source):
You can put this solution on YOUR website!SORRY DIDN'T READ THE ENTIRE PROBLEM. THEY ARE ASKING FOR THE FASTEST WHICH WOULD BE 750=100 OR 850 KM/H.
DISTANCE = RATE TIMES TIME
4000=[X+(X+100)]2.5
4000=(2X+100)2.5
4000=5X+250
5X=4000-250
5X=3750
X=3750/5
X=750
PROOF
4000=(750+850)2.5
4000=1600*2.5
4000=4000
|
Radicals/57167: This question is from textbook Algebra I: An Incremental Development
Having problems with square root equations; for example, 5{square root symbol}27 - 14{square root symbol}12 + 3{square root symbol}200 - 4{square root symbol}300 + 6{square root symbol}72. The only instructions provided were "Solve" I'm okay with initial reducing; for example, I can get 27 broken down into 3x3x3, 12 to 3x2x2, etc. but I don't really understand from there.
1 solutions
Answer 38878 by checkley71(8403) on 2006-10-19 17:54:07 (Show Source):
You can put this solution on YOUR website!I'LL GET YOU STARTED
5SQRT27=5SDQRT3*3*3
5SQRT9*3 (3*3=9)
5*3SQRT3 (SQRT9=3)
15SQRT3 (5*3=15)
-14SQRT12
-14SQRT2^2^3
-14SQRT4*3 (2*2=4)
-14*2SQRT3 (SQRT4=2)
-28SQRT3 (-14^2=28)
3SQRT200
3SQRT2*2*2*5*5 (2*2=4 & 5*5=25)
3*2*5SQRT2 (SQRT4=2 & SQRT25=5)
30SQRT2 (3*2*5=30)
NOW COMBINE LIKE TERMS AND REDUCE.
|
Graphs/56990: Driving down a mountain, Tom finds that he has descended 1800 ft
in elevation by the time he is 3.25 mi horizontally away from the top of the
mountain. Find the slope of his descent to the nearest hundredth
1 solutions
Answer 38875 by checkley71(8403) on 2006-10-19 17:40:30 (Show Source):
You can put this solution on YOUR website!CREATE TWO SETS OF POINTS AND CALCULATE THE SLOPE
(0,1800)THE STARTING POINT ON TOP OF THE MOUNTAIN (Y AXIS)
(3.25*5280,0)THE HORIZONTAL DISTANCE FROM THE STARTING POINT (X AXIS)
(0-1800)/(17160-0)
-1800/17160=-.1049
|
Sequences-and-series/57165: This question is from textbook
here's the sequence:
0.001,0.01,0.1,1
Whats the pattern?? if you figure it out i'll find the next two numbers on my own. thanks
1 solutions
Answer 38872 by checkley71(8403) on 2006-10-19 17:31:17 (Show Source):
|
Sequences-and-series/57164: This question is from textbook
here's the sequence:
1, 1/4, 1/9 ,1/16 or 1, .25, 1.111111repeating, .0625
What is the pattern?? and if you figure out the pattern, i'll find out on my own the next two numbers.
1 solutions
Answer 38870 by checkley71(8403) on 2006-10-19 17:28:55 (Show Source):
You can put this solution on YOUR website!1/1^2 1/2^2 1/3^2 1/4^2 1/5^2
1 1/4 1/9 1/16 1/25
1/1^2 1/2^2 1/3^2 1/4^2 1/5^2
1/1=1 1/4=.25 1/9=1/.1111111 1/25=1/.0625 YOU HAVE A MISTAKE(?) WITH THE 1/1.11111 & 1/25=.04
|
Functions/57103: i am going to a job that uses simple algebra deal in conveting factions of inches to decemial points where can i go to get help on that
1 solutions
Answer 38868 by checkley71(8403) on 2006-10-19 17:20:08 (Show Source):
|
Unit_Conversion_Word_Problems/57140: William's refrigerator is 85 inches tall. william put 3 boxes on top of the fridge. the hight of the 3 boxes were 5.45 inches, 7.2 inches and 14.87 inches. What is the height from the floor to the top of the boxes
1 solutions
Answer 38867 by checkley71(8403) on 2006-10-19 17:09:17 (Show Source):
|
Graphs/56954: This question is from textbook Glencoe Algebra 2
hi, um my books says to:
"find the slope of the line that passes through each pair of points. Then
determine whether the line rises to the right, falls to the right, is
horizontal, or is vertical."
if you could please help me with my first problem that would be great!
heres the cordinates: (-6,-5),(4,1)
thank you!!!!!!
1 solutions
Answer 38695 by checkley71(8403) on 2006-10-18 17:23:54 (Show Source):
|
Coordinate-system/56815: I need help...the instructions are Find the distance between P and Q.
P (4,9); Q (9,21)
Can someone help me out? Thank You!
1 solutions
Answer 38591 by checkley71(8403) on 2006-10-17 21:05:01 (Show Source):
You can put this solution on YOUR website!ON THE X AXIS WE HAVE 9-4=5
ON THE Y AXIS WE HAVE 21-9=12
THESE ARE TWO SIDES OF A RIGHT TRIANGLE WITH THE THIRD SIDE BEING THE HYPOTENUSE THUS
H^2=5^2+12^12
H^2=25+144
H^2=169
X=13 IS THE DISTANCE BETWEEN THE TWO POINTS P & Q (4,9)(9,21)
|
Numeric_Fractions/56842: This question is from textbook math 5th grade
were trying to figure out to work out this problem .this is how it is writen out.the directions say solve the equation.
( n divided by 7=8 )
and the other one is s/8=13 it`s a fraction.if someone could help me i would appreciate it. this is a worksheet my daughter is working for homework
thank you
1 solutions
Answer 38588 by checkley71(8403) on 2006-10-17 20:58:22 (Show Source):
|
Linear-systems/56836: I really dont get how to do this. Here it is- Jacob has $3.50 in nickels and dimes. He has twice as many dimes as nickels. How many nickels and how many dimes does he have?
1 solutions
Answer 38581 by checkley71(8403) on 2006-10-17 20:35:01 (Show Source):
|
Linear-systems/56838: Grace;s average driving speed is 3 mph faster than Thelma's. In the same length of time it takes Grace to drive 156 miles, Thelma only drives 147 miles. What is Grace's average speed?
1 solutions
Answer 38578 by checkley71(8403) on 2006-10-17 20:24:44 (Show Source):
|
Graphs/56823: 20X-92=87
I realize that the answer is -0.25 but can some please break it down, if figured it but not sure how I did it. Help! Thanks
1 solutions
Answer 38576 by checkley71(8403) on 2006-10-17 20:20:28 (Show Source):
You can put this solution on YOUR website!20X-92=87
20X=87+92
20X=179
X=179/20
X=8.95
WHY DO YOU SAY THE ANSWER IS -.25?
ONLY IF THE PROBLEM IS 20X-92+87
THEN
20X-92+87
20X+5
5(4X+1)
OR
20X-92+87=0
20X-92+87=0
20X=-5
X=-5/20
YOU NEED TO CHECK YOUR ENTRY TO ENSURE IT IS CORRECT OR WE CAN'T ALWAYS HELP YOU SOLVE THEM!!!!!!!!! :)
X=-.25
|
|
