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# Recent problems solved by 'checkley71'

checkley71 answered: 8399 problems
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 Linear-equations/58144: Find the slope of any line parallel to the line through points (15, 1) and (4, 2).1 solutions Answer 39753 by checkley71(8403)   on 2006-10-25 18:09:53 (Show Source): You can put this solution on YOUR website!(2-1)/(4-15) 1/-11 -1/11 IS THE SLOPE Y=mX+b 1=(-1/11)15+b 1+15/11=b b=(11+15)/11 b=26/11 THUS THE EQUATION OF THIS LINE IS Y=-X/11+26/11
 Equations/58025: 44. One number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Find the larger number. A) 5 B) 7 C) 17 D) 34 I really appreciate your help!!!!1 solutions Answer 39672 by checkley71(8403)   on 2006-10-25 09:02:24 (Show Source): You can put this solution on YOUR website!THE NUMBERS ARE X & (X+12) X+2(X+12)=39 X+2X+24=39 3X+24=39 3X=39-24 3X=15 X=15/3 X=5 THUS X+12=5+12=17 C) 17 IS THE CORRECT ANSWER.
 Equations/58023: 42. Is –4 a solution to the equation 7x – 5 + 3x = 6 + x – 10 Thanks!!!!!!!!!!!1 solutions Answer 39670 by checkley71(8403)   on 2006-10-25 08:59:18 (Show Source): You can put this solution on YOUR website!7X-5+3X=6+X-10 7*-4-5+3*-4=6-4-10 -28-5-12=6-14 -45=-8 THUS (-4) IS NOT A SOLUTION.
 Mixture_Word_Problems/58020: 38. Write the equation of the line that passes through point (7, 5) with a slope of 0. A) x = 7 B) x = 5 C) y = 7 D) y = 5 Thanks so much for your help!!!1 solutions Answer 39668 by checkley71(8403)   on 2006-10-25 08:56:30 (Show Source): You can put this solution on YOUR website!Y=mX+b 5=0*7+b 5=B Y=5 D) IS THE ANSWER
 Equations/58016: 29. Which of the ordered pairs is a solution for the equation 2x – 5y = 10? A) (0, 2) B) (–5, 0) C) (–5, –2) D) (0, –2) Thanks for your help!!!1 solutions Answer 39666 by checkley71(8403)   on 2006-10-25 08:53:39 (Show Source): You can put this solution on YOUR website!2X-5Y=10 2*0-5*2=10 0-10=10 -10=10 NOT A SOLUTION 2*-5-5*0=10 -10-0=10 -10=10 NOT A SOLUTION 2*-5-5*-2=10 -10+10=10 0=10 NOT A SOLUTION 2*0-5*-2=10 0+10=10 10=10 THIS IS A SOLUTION D)(0,-2)
 Graphs/57870: This question is from textbook Introductory Algebra Please help me solve this problem? Complete the ordered pairs. y=4x-3 (0, ) ( ,0) (1, ) 1 solutions Answer 39665 by checkley71(8403)   on 2006-10-25 08:48:50 (Show Source): You can put this solution on YOUR website!Y=3X-3 IF X=0 THEN Y=3*0-3 Y=-3 (0,-3) IF Y=0 THEN 0=3X-3 3X=3 X=3/3 X=1 (1,0) IF X=1 THEN Y=3*1-3 Y=3-3 Y=0 (1,0)
 Rational-functions/57939: Graph y=4/3x-21 solutions Answer 39663 by checkley71(8403)   on 2006-10-25 08:39:23 (Show Source): You can put this solution on YOUR website!Y=4/3X-2 THE Y INTERCEPT IS (0,-2) WITH A SLOPE OF 4/3 NOW WE FIND THE X INTERCEPT BY SETTING Y=0 THUS 0=4/3X-2 4/3X=2 X=2/(34/3) X=2*3/4 X=6/4 X=1.5 OR (1.5,0) PLOT THE TWO POINTS (0,-2)&(1.5,0), DRAW THE LINE THROUGH THESE POINTS WITH A SLOPE OF 4/3.
 Quadratic_Equations/57961: Table of values question. Please help me someone. what are the table of values for 4=-x^2+6x-2? I have to come up with 5 values each acceptable for x and y. Thanks in advance1 solutions Answer 39661 by checkley71(8403)   on 2006-10-25 08:33:00 (Show Source): You can put this solution on YOUR website!4=-X^2+6X-2 HAS NO Y VALUE. PLEASE CORRECT & RESUBMIT.
 Quadratic_Equations/58014: in which quadrant are the following points located? 3,-1 and can you explain so i can do the rest of them? Thanks Heather1 solutions Answer 39659 by checkley71(8403)   on 2006-10-25 08:29:45 (Show Source): You can put this solution on YOUR website!THERE ARE 4 QUADRANTS IN THE GRAPHING SYSTEM. THE UPPER RIGHT (+,+), THE UPPER LEFT (-,+), THE LOWER RIGHT (+,-), & THE LOWER LEFT (-,-). THUS THE POINTS (3,-1) IS IN THE LOWER RIGHT QUADRANT.
 Geometric_formulas/58015: 2a(x-8)+9(x-8)1 solutions Answer 39657 by checkley71(8403)   on 2006-10-25 08:26:15 (Show Source): You can put this solution on YOUR website!2A(X-8)+9(X-8) (2A+9)(X-8) NOTE (X-8) IS A COMMON FACTOR TO THE TWO TERMS.
 Distributive-associative-commutative-properties/57984: Which is the factored form for x to the second power minus 7x plus 10? a.(x+5)(x-2) b.(x-5)(x+2) c.(x-5)(x-2) d.(x+5)(x+2)1 solutions Answer 39631 by checkley71(8403)   on 2006-10-24 22:13:26 (Show Source): You can put this solution on YOUR website!x^2-7x+10 (x-2)(x-5) proof x^2-2x-5x+10 x^2-7x+10
 Geometry_Word_Problems/57941: This question is from textbook Elementary and Intermediate Algebra To Whomever can assist, Thank You! If the total surface area of a right circular cylinder is 104PIE square meters and a radius of the base is 4 meters long, find the height of the cylinder.1 solutions Answer 39630 by checkley71(8403)   on 2006-10-24 21:57:33 (Show Source): You can put this solution on YOUR website!CIRCUMFERANCE OF THE BASE=2PIR THUS C=2PI4 C=2*PI*4 C=8PI THE AREA OF THE TOP IS A=PIR^2 A=PI*4^2 A=PI*16 OR A=16PI AND THERE ARE 2 CIRCULAR AREAS (TOP & BOTTOM) THUS 2*PI*16=32PI THE CYLINDER SIDE AREA IS 8P1*HEIGHT THUS THE TOTAL SURFACE AREA BEING 104PI=32PI+8PI*H 104PI-32PI=8PI*H 72PI=8PI*H H=72PI/8PI H=9 METERS
 Equations/57971: how do solve this problem 1-2/3y=9/5-y/5+3/51 solutions Answer 39628 by checkley71(8403)   on 2006-10-24 21:44:14 (Show Source): You can put this solution on YOUR website!1-2/3Y=9/5-Y/5+3/5 -2/3Y+Y/5=9/5+3/5-1 -2Y/3+Y/5=12/5-1 (-10Y+3Y)/15=7/5 -7Y/15=7/5 -35Y=105 Y=105/-35 Y=-3 PROOF 1-(2/3)-3=9/5-(-3/5)+3/5 1+6/3=9/5+3/5+3/5 1+2=15/5 3=3
 Systems-of-equations/57932: This question is from textbook geometry reasoning decide whether lines p1 and p2 are perpendicular: line p1: x + 8y= -4 line p2: 4x - 2y = 101 solutions Answer 39626 by checkley71(8403)   on 2006-10-24 21:31:35 (Show Source): You can put this solution on YOUR website!X+8Y=-4 8Y=-X-4 Y=-X/8-4 THIS LINE HAS A SLOPE OF -1/8 4X-2Y=10 -2Y=-4X+10 Y=2X-5 THIS LINE HAS A SLOPE OF 2 THE LINES ARE NOT PERPENDICULAR TO BE PERPENDICULAR TO LINE 1 THE SLOPE HAS TO BE +8 TO BE PERPENDICULAR TO LINE 2 THE SLOPE HAS TO BE -1/2
 Linear-equations/57927: This question is from textbook MCDougal Littell Algebra I 17=2(3x+1)-x Please explain and help1 solutions Answer 39589 by checkley71(8403)   on 2006-10-24 17:50:51 (Show Source): You can put this solution on YOUR website!17=2(3X+1)-X 17=6X+2-X 5X=17-2 5X=15 X=15/5 X=3 PROOF 17=2(3*3+1)-3 17=2(9+1)-3 17=2(10)-3 17=20-3 17=17
 Equations/57930: What is the answer to: 7y-(6y+3)=121 solutions Answer 39588 by checkley71(8403)   on 2006-10-24 17:46:36 (Show Source): You can put this solution on YOUR website!7Y-(6Y+3)=12 7Y-6Y-3=12 Y=12+3 Y=15 PROOF 7*15-(6*15+3)=12 105-90-3=12 105-93=12 12=12
 Points-lines-and-rays/57856: This question is from textbook For the points (0,3,) and 10,0) find a. Distance between the two points b. Midpoint of segment connecting points c. Equation of line containing points Determine if the following are functions a. F= (1,2), (3,4), (1,6) b. G= (-1,7). (4,3), (6,10, (2,3) 1 solutions Answer 39586 by checkley71(8403)   on 2006-10-24 17:43:39 (Show Source): You can put this solution on YOUR website!(0,3)(10,0) 3^2+10^2=X^2 9+100=X^2 109=X^2 X=10.44 IS TH DISTANCE BETWEEN (0,2)(10,0) MID POINT IS (10/0)/2=5 FOR THE X COORDINATE (3/0)/2=1.5 FOR THE Y COORDINATE OR (5,1.5) IS THE MID POINT. SLOPE=(0-3)/(10-0)=-3/10=-.3 Y=mX+b 3=-.3*0+b 3=b THUS Y=-.3X+3
 Percentage-and-ratio-word-problems/57922: I have a problem trying to determine how to solve this problem: the question is write 2 ratios implied by this statement: Juan took 3 hours to read 120 pages. Then it asks hour many hours to read 560 pages. 1 solutions Answer 39576 by checkley71(8403)   on 2006-10-24 17:22:00 (Show Source): You can put this solution on YOUR website!120:3=560:X
 Quadratic_Equations/57854: how do you factor 10x + 35y 1 solutions Answer 39575 by checkley71(8403)   on 2006-10-24 17:19:28 (Show Source): You can put this solution on YOUR website!10X+35Y 5(2X+7Y)
 Systems-of-equations/57907: This question is from textbook geometry reasoning lines a and b are perpendicular. THe slope of line a is given. What is the slope of line b? a is 11 solutions Answer 39573 by checkley71(8403)   on 2006-10-24 17:14:25 (Show Source): You can put this solution on YOUR website!the slope of a perpendicular line is the negative inverse of the slope thus if the slope is 1 for line a then -1 is the slope of line b.
 Unit_Conversion_Word_Problems/57916: This is the problem: Use unit multipliers to convert 16,000 inches to miles. I am stumped!1 solutions Answer 39571 by checkley71(8403)   on 2006-10-24 17:11:21 (Show Source): You can put this solution on YOUR website!1600 inches=1600/12=133 feet 4 inches or 133.333 feet 133.33 feet=133.333/5280=.0252525 miles
 Coordinate-system/57920: This question is from textbook Algebra Structure and Method book 1 Find The Slope: 3x - 5y = 101 solutions Answer 39569 by checkley71(8403)   on 2006-10-24 17:07:32 (Show Source): You can put this solution on YOUR website!3x-5y=10 -5y=-3x+10 5y=3x-10 y=3/5x-10/5 y=3/5x-2 thus the slope is 3/5
 Expressions-with-variables/57711: 4n-(3n+11)=-111 solutions Answer 39434 by checkley71(8403)   on 2006-10-23 20:43:40 (Show Source): You can put this solution on YOUR website!4N-3N-11=-11 N=-11+11 N=0
 Linear_Equations_And_Systems_Word_Problems/57751: The charge for admission to the zoo is \$3.25 for each adult and \$1.50 for each child. On a day when 500 people paid to visit the zoo, the receipts totaled \$1,275. Find the number of adult and children tickets purchased that day ? what I have so far.... X= adult tickets purchased y= child's tickets purchased 3.25x + 1.50y = 1275 x+y=500 I am not sure if this is correct. Please help!!!!! Rodney1 solutions Answer 39433 by checkley71(8403)   on 2006-10-23 20:40:16 (Show Source): You can put this solution on YOUR website!3.25X+1.50Y=1275 X+Y=500 NOW SOLVE FOR X X=500-Y NOW REPLACE X BY (500-Y) IN THE FIRST EQUATION 3.25(500-Y)+1.50Y=1275 1625-3.25Y+1.50Y=1275 -1.75Y=1275-1625 1.75Y=350 Y=350/1.75 Y=200 CHILDREN TICKETS THUS X+200=500 X=500-200 X=300 ADULT TICKETS PROOF 3.25*300+1.50*200=1275 975+300=1275 1275=1275
 Linear-systems/57741: system of linear wquations. solve in substitution or addition method there is no book if possible express in ordered pair 3x-5y=1 10y=6x-1 thanks, dnn1 solutions Answer 39431 by checkley71(8403)   on 2006-10-23 20:32:33 (Show Source): You can put this solution on YOUR website!3X-5Y=1 3X=5Y+1 X=5Y/3+1/3 THEN 10Y=6(5Y/3)+1/3 10Y=(30Y/3)+1/3 10Y=10Y+1/3 10Y-10Y=1/3 0=1/3 NO VALID SOLUTIONS FOR X OR Y
 Percentage-and-ratio-word-problems/57749: This question is from textbook Mathematics Applications and Concepts Decide which is the better buy. Explain - can you please explain to me what exactly the steps are: a 17 ounce box of cereal for \$4,89 or a 21 ounce box for \$5.69 1 solutions Answer 39426 by checkley71(8403)   on 2006-10-23 20:25:09 (Show Source): You can put this solution on YOUR website!YOU NEED TO FIND THE PRICE PER OUNCE OF EACH PRODUCT TO COMPARE THE PRICES. 489/17=28.7647 CENTS PER OUNCE 569/21=27.095 CENTS PER OUNCE OBVIOUSLY THE 21 OUNCE PACKAGE IS CHEAPER BY ABOUT 1.7 CENTS.
 Inequalities/57540: Not sure if I have this in the right category. Thanks for your help. P(4,0), Q(6,-8) use point-slope form to write the equation of the line passing through the two given points. Write each equation in slope-intercept form. Thanks! 1 solutions Answer 39404 by checkley71(8403)   on 2006-10-23 17:34:26 (Show Source): You can put this solution on YOUR website!Y=mX+b m=(-8-0)/6-4) m=-8/2 m=-4 Y=-4X+b SUBSTITUTING ONE OF THE POINTS IN THIS EQUATION WE FIND THE INTERCEPT (b) 0=4*-4+b 0=-16+b b=16 THUS THE EQUATION IS Y=-4X-16
 Problems-with-consecutive-odd-even-integers/57529: find all sets of four consecutive odd integers that are positive and whose sum is at most 25. 1 solutions Answer 39403 by checkley71(8403)   on 2006-10-23 17:28:59 (Show Source): You can put this solution on YOUR website!X+X+2+X+4+X+6=25 4X+12<=25 4X<=25-12 4X<=13 X<=13/4 X<=3 PROOF 3+5+7+9<=25 24<=25
 Percentage-and-ratio-word-problems/57637: This question is from textbook Elementary and Intermediate Algebra To Whomever can assist, Thank you... A retailer has some video games that cost her \$25 dollars each. She wants to sell them at a profit of 80% of the cost. What price should she charge for the games?1 solutions Answer 39402 by checkley71(8403)   on 2006-10-23 17:09:54 (Show Source): You can put this solution on YOUR website!.8*25=20 THUS THE RETAILER NEEDS TO CHARGE 25+20=\$45 OR 25(1+.8*25)=25+20=45
 Equations/57663: -4X^4 I get: -256X 1 solutions Answer 39400 by checkley71(8403)   on 2006-10-23 17:06:24 (Show Source): You can put this solution on YOUR website!-4X*-4X*-4X*-4X=+256X^4
 Linear-equations/57687: I am supposed to graph this and I have tried to research to understand, there are not any like this that I can find. The line with a slope of 5 and a y intercept of 2, can you explain how to solve this please1 solutions Answer 39399 by checkley71(8403)   on 2006-10-23 17:03:59 (Show Source): You can put this solution on YOUR website!THE SLOPE/INTERCEPT FORMULA IS Y=mX+b Y=5X+2 SETTING Y=0 WE GET 0=5X+2 5X=-2 X=-2/5 THUS TWO POINTS ON THIS LINE ARE (0,2)(-2/5,0) PLOT THESE TWO POINTS AND DRAW A LINE THROUGH THEM WITH A SLOPE OF 5