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# Recent problems solved by 'checkley71'

checkley71 answered: 8399 problems
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 Linear-systems/57175: find the slope of the line through (-5,2) (-5,-3)1 solutions Answer 38887 by checkley71(8403)   on 2006-10-19 18:09:17 (Show Source): You can put this solution on YOUR website!(-5,2)(-5,-3) (-3-2)/(-5+5) -5/0 SLOPE IS UNDEFINED & THE LINE IS A VERTICLE LINE THROUGH X=-5
 Expressions-with-variables/57177: 15-g=23-2g1 solutions Answer 38885 by checkley71(8403)   on 2006-10-19 18:06:37 (Show Source): You can put this solution on YOUR website!15-G=23-2G -G+2G=23-15 G=8 PROOF 15-8=23-2*8 7=23-16 7=7
 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 jet1 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
 Sequences-and-series/57171: here's the sequence: 12, -4, 4/3, -4/9 what is the next two numbers??(or give me the pattern and i'll figure them out) thanks1 solutions Answer 38880 by checkley71(8403)   on 2006-10-19 17:56:13 (Show Source): You can put this solution on YOUR website!12(-1/3)=-4(-1/3)=4/3(-1/3)=-4/9 ETC.
 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.
 Permutations/57168: (-48)(-17)=1 solutions Answer 38876 by checkley71(8403)   on 2006-10-19 17:41:48 (Show Source): You can put this solution on YOUR website!(-48)(-17)=816
 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. thanks1 solutions Answer 38872 by checkley71(8403)   on 2006-10-19 17:31:17 (Show Source): You can put this solution on YOUR website!MULTIPLY THE PREVIOUS NUMBER BY 10 .001*10=.01*10=.1*10=1*10=10*10=100
 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 that1 solutions Answer 38868 by checkley71(8403)   on 2006-10-19 17:20:08 (Show Source): You can put this solution on YOUR website!SUGGESTION -- GO TO YOUR LOCAL LIBRARY & GET A BOOK ON FRACTIONS AND/OR DECIMALS.
 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 boxes1 solutions Answer 38867 by checkley71(8403)   on 2006-10-19 17:09:17 (Show Source): You can put this solution on YOUR website!85+5.45+7.2+14.87=112.52 INCHES FROM FLOOR TO THE TOP OF THE BOXES.
 Expressions-with-variables/57149: This question is from textbook descovering algebra y=4.2. find y if x=5 1 solutions Answer 38865 by checkley71(8403)   on 2006-10-19 17:06:33 (Show Source): You can put this solution on YOUR website!THERE IS NO X IN Y=4.2 SO HOW CAN 5 BE SUBSTITUTED FOR X?
 Inequalities/56959: This question is from textbook Pre-Algebra Please solve the equation. 22+4y-14=01 solutions Answer 38699 by checkley71(8403)   on 2006-10-18 17:36:12 (Show Source): You can put this solution on YOUR website!22+4Y-14=0 4Y=14-22 4Y=-8 Y=-8/4 Y=-2 PROOF 22+4*-2-14=0 22-8-14=0 0=0
 Quadratic_Equations/56837: v^2-30v+2251 solutions Answer 38698 by checkley71(8403)   on 2006-10-18 17:33:43 (Show Source): You can put this solution on YOUR website!V^2-30V+225=0 (V-15)(V-15)=0 V-15=0 V=15
 Polynomials-and-rational-expressions/56953: This question is from textbook how would i solve: x(x)(x)(x) -5x(5x)+41 solutions Answer 38697 by checkley71(8403)   on 2006-10-18 17:29:28 (Show Source): You can put this solution on YOUR website!X^4-25X^2+4 (X^2-4)(X^2-1) (X-2)(X+2)(X-1)(X+1)
 Equations/56956: 330=16t+10 1 solutions Answer 38696 by checkley71(8403)   on 2006-10-18 17:26:32 (Show Source): You can put this solution on YOUR website!330=16T+10 16T=330-10 16T=320 T=320/16 T=20 PROOF 330=16*20+10 330=320+10 330=330
 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): You can put this solution on YOUR website!(-6,-5)(4,1) (1+5)/(4+6) 6/10 .6 is the slope because it is a positive slope it rises to the right
 Expressions-with-variables/56950: 2/3n = 281 solutions Answer 38694 by checkley71(8403)   on 2006-10-18 17:15:09 (Show Source): You can put this solution on YOUR website!2/3n=28 3n*28=2 84n=2 n=2/84 n=1/42
 Quadratic_Equations/56813: 2x^2 + 3x=11 solutions Answer 38693 by checkley71(8403)   on 2006-10-18 17:12:52 (Show Source): You can put this solution on YOUR website!2X^2+3X=1 2X^2+3X-1 using the quadratic equation we get x=(-b+-sqrtb^2-4ac)/2a x=(-3+-sqrt-3^2-4*2*-1)/2*2 x=(-3+-sqrt9+8)/4 x=(-3+-sqrt17)/4 x=(-3+4.123)/4 x=1.123/4 and x=(-3-4.123)/4 x=-7.123/4
 percentage/56941: A number increased by 20% is 16. Find the number.1 solutions Answer 38690 by checkley71(8403)   on 2006-10-18 17:02:24 (Show Source): You can put this solution on YOUR website!X+(.2X)=16 1.2X=16 X=16/1.2 X=4/.3 X=13 1/3 PROOF 13 1/3+.2(1 1/3)=16 40/3+.2*4/3=16 40/3+8/3=16 48/3=16 16=16
 Polynomials-and-rational-expressions/56945: This question is from textbook Elementary and Intermediate Algebra Simplify 1/2 - 5/4 + 11/7 using the LCD. Express your answer as a lowest-terms fraction without decimals. 1 solutions Answer 38688 by checkley71(8403)   on 2006-10-18 16:57:18 (Show Source): You can put this solution on YOUR website!1/2-5/4+11/7 14/28-35/28+44/28 23/28
 Equations/56927: 3(x+2.9)=6.3-5x1 solutions Answer 38687 by checkley71(8403)   on 2006-10-18 16:55:01 (Show Source): You can put this solution on YOUR website!3(X+2.9)=6.3-5X 3X+8.7=6.3-5X 3X+5X=6.3-8.7 8X=-2.4 X=-2.4/8 X=-.3
 Expressions-with-variables/56843: 2x=4=3x1 solutions Answer 38593 by checkley71(8403)   on 2006-10-17 21:07:26 (Show Source): You can put this solution on YOUR website!I SPECKULATE THIS PROBLEM IS EITHER 2X+4=3X OR 2X=4+3X CAN'T HAVE TWO EQUAL SIGNS.
 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 you1 solutions Answer 38588 by checkley71(8403)   on 2006-10-17 20:58:22 (Show Source): You can put this solution on YOUR website!N/7=8 N=8*7 N=56 PROOF 56/7=8 8=8 S/8=13 S=13*8 S=104 PROOF 104/8=13 13=13
 Quadratic_Equations/56818: 1 solutions Answer 38586 by checkley71(8403)   on 2006-10-17 20:54:57 (Show Source): You can put this solution on YOUR website!36^2-3X=(6X-7=0 36x^2+36x-7=0 X=(-36+-SQRTB^2-4AC)/2A X=(-36+-SQRT36*36-4*36*-7)/2*36 X=(-36+-SQRT1296+1008)/72 X=(-36+-SQRT2304)/72 X=(-36+-48)/72 X=(-36+48)/72 X=12/72 X=1/6 AND X=(-36-48)/72 X=-84/72 X=-1 1/6
 Equations/56841: The process and answer for the equation 10y+8y=151 solutions Answer 38583 by checkley71(8403)   on 2006-10-17 20:42:02 (Show Source): You can put this solution on YOUR website!10Y+18Y=15 28Y=15 Y=15/28 PROOF 10*15/28+18*15/28=15 150/28+270/28=15 420/28=15 15=15
 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): You can put this solution on YOUR website!.05X+.10(2X)=3.50 .05X+.2X=3.50 .25X=3.50 X=3.50/.25 X=14 NICKLES PROOF .05*14+.10*28=3.50 .70+2.80=3.50 3.50=3.50
 Expressions-with-variables/56839: This question is from textbook Algebra 1 How would you fimd out the answer to 4(2a-1)=-10(a-5)1 solutions Answer 38580 by checkley71(8403)   on 2006-10-17 20:30:05 (Show Source): You can put this solution on YOUR website!4(2A-1)=-10(A-5) 8A-4=-10A+50 8A+10A=50+4 18A=54 A=54/18 A=3 PROOF 4(2*3-1)=-10(3-5) 4(6-1)=-30+50 4*5=20 20=20
 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): You can put this solution on YOUR website!156/(X+3)=147/X 156X=147X+441 156X-147X=441 9X=441 X=441/9 X=45 MPH X+3=45+3=48 MPH FOR GRACE
 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