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# Recent problems solved by 'checkley71'

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 Radicals/37958: i just dont understand how to do these problems OR how to FOIL someone help me!!!!1 solutions Answer 23493 by checkley71(8403)   on 2006-05-15 22:27:54 (Show Source): You can put this solution on YOUR website!FOIL FIRST OUTER INNER LAST (X+4)(X-5) FIRST=X*X OR X~2 OUTER=4*-5 OR -20 INNER=4X OUTER=-5X NOW PUT THEM ALL TOGETHER THUS X~2-20+4X-5X OR X~2-X-20
 Linear_Algebra/37975: This question is from textbook algebra 2 square root of negative x cube1 solutions Answer 23490 by checkley71(8403)   on 2006-05-15 22:23:15 (Show Source): You can put this solution on YOUR website!SQRT-X~3 OR SQRT(-X*-X*-X) OR -XSQRT-X
 Radicals/37971: Evaluate. 3 square root of -81 solutions Answer 23489 by checkley71(8403)   on 2006-05-15 22:21:09 (Show Source): You can put this solution on YOUR website!3SQRT-8 OR 3SQRT(-2*-2*-2) OR 3*-2SQRT-2 OR -6SQRT-2
 Proportions/37972: thrity years ago gasoline cost 30 cents per gallon. Today gasoline averages about \$1.65 per gallon. What is the percentage of increase in the cost of gasoline How do i figure it out?1 solutions Answer 23487 by checkley71(8403)   on 2006-05-15 22:19:18 (Show Source): You can put this solution on YOUR website!165/30=5.5 OR 550% INCREASE FROM 30 TO 165
 Linear-systems/38001: Your teacher is giving you a test worth 100 points containing 40 questions. There are two-point and four-point questions on the test. How mamy of each type of question are on the test? please help me to sovle it. thank you. 1 solutions Answer 23486 by checkley71(8403)   on 2006-05-15 22:16:46 (Show Source): You can put this solution on YOUR website!2X+4(40-X)=100 OR 2X+160-4X=100 OR -2X=-60 OR X=30 2 POINT QUSTIONS & 40-30=10 4 POINT QUESTIONS PROOF 30*2+10*4=60+40=100 OR 100=100
 Expressions-with-variables/37987: Write the equation of the line that passes through point (-6,7) with a slope of 0.1 solutions Answer 23484 by checkley71(8403)   on 2006-05-15 22:12:31 (Show Source): You can put this solution on YOUR website!Y=mX+b OR Y=0X+b OR Y=b OR Y=7
 Expressions-with-variables/37988: Find the slope of the line passing through the points (1,1) and (3,3).1 solutions Answer 23481 by checkley71(8403)   on 2006-05-15 22:08:52 (Show Source): You can put this solution on YOUR website!SLOPE IS (Y2-Y1)/(X2-X1) OR (3-1)/3-1) OR 2/2 OR 1 IS THE SLOPE.
 Expressions-with-variables/37999: Phil & phyllis are siblings. phyllis has twice as many brothers as she has sisters. phil has the same number of brothers as sisters. how many girls and how many boys?1 solutions Answer 23478 by checkley71(8403)   on 2006-05-15 22:06:03 (Show Source): You can put this solution on YOUR website!PHYLIS HAS 2 SISTERS & PHIL HAS 3 BROTHERS OR THERE ARE 3 GIRLS & 4 BOYS. G+O=2*0 NO SOLUTION G+1 SISTER=2B OK BUT 1B=2 SISTERS NO MATCH G+2 SISTERS=4B OK & 3B=3 SISTERS A MATCH ANY MORE LIGHT ON THE SUBJECT?
 Graphs/37993: A rectangle has sides of 3x-4 and 7x + 10. Find the expression that represents its perimeter.1 solutions Answer 23475 by checkley71(8403)   on 2006-05-15 21:59:58 (Show Source): You can put this solution on YOUR website!2(3x-4)+2(7x+10) or 6x-8+14x+20 or 20x+12 or 5x+3
 Miscellaneous_Word_Problems/37959: In a family there are two cars. In a given week, the first car gets an average of 40 miles per gallon, and the second car gets 35 miles per gallon. The two cars combined drive a total of 1650 miles in that week, for a total gas consumption of 45 gallons. How many gallons were consumed by each of the two cars that week? 1 solutions Answer 23473 by checkley71(8403)   on 2006-05-15 21:54:52 (Show Source): You can put this solution on YOUR website!x/40+(1650-x)/35=45 or [(35x)+40(1650-x)]/40*35=45 or (35x+66000-40x)/1400=45 or (-5x+66000)/1400=45 or -5x+66000=63000 or -5x=-3000 or x=3000/5 or x=600 so 600 miles driven @40 mpg & 1650-600 or 1050 miles @ 35mpg then 600/40+1050/35=45 or 15+30=45 gallons
 Sequences-and-series/37943: Evaluate -8 / -4 A) -4 B) -2 C) 2 D) 4 1 solutions Answer 23454 by checkley71(8403)   on 2006-05-15 19:39:42 (Show Source): You can put this solution on YOUR website!-8/-4 or -2/-1 or 2 thus the answer is C)
 Linear-equations/37952: . Find the slope and y-intercept of -2X + 6Y = -15 A) Slope 2 and y-intercept (0,-15) B) Slope -2 and y-intercept (0,-15) C) Slope 1/3 and y-intercept (0,-15/6) D) Slope 3 and y-intercept (0,-1/3) 1 solutions Answer 23453 by checkley71(8403)   on 2006-05-15 19:37:37 (Show Source): You can put this solution on YOUR website!-2X+6Y=-15 or 6Y=2X-15 or Y=1/3*x-5/2 thus the slope is 1/3 and the intercept is (0,-5/2)
 Linear-equations/37946: A line passes through the point(8,6)and has a slope of 6 . Write an equation for this line in (x,y)-coordinates. 1 solutions Answer 23452 by checkley71(8403)   on 2006-05-15 19:31:06 (Show Source): You can put this solution on YOUR website!Y=mX+b or Y=6X+b & the Y intercept is 6-(6*8) or -42 thus the y intercept is -42 then the equation is Y=6x-42
 Linear-equations/37951: Find the slope of the line passing through (7,3) and (9, -2) A) 2/5 B) -2/5 C) 5/2 D) -5/2 1 solutions Answer 23450 by checkley71(8403)   on 2006-05-15 19:22:20 (Show Source): You can put this solution on YOUR website!(-2-3)/(9-76) OR -5/2 OR ANSWER D)
 Linear-equations/37950: Determine the coordinates for graphing the equation 3Y + 2X = 4Y – 2 A) (0,2),(-1,0) B) (2,0),(0,-1) C) (3,2),(4,-2) D) (2,3),(-2,4) 1 solutions Answer 23449 by checkley71(8403)   on 2006-05-15 19:20:43 (Show Source): You can put this solution on YOUR website!3Y+2X=4Y-2 OR -Y=-2X-2 OR Y=2X+2 THUS THE Y INTERCEPT IS 2 AND THE X INTERCEPT IS -1 THUS THE POINTS ARE A)(0,2)&(-1,0)
 Polynomials-and-rational-expressions/37939: This question is from textbook McDougal Little Can you please check my work? Did I do this correctly? x+6/x+1 - 4/2x+3 x+6/x+1 x 2x+3/2x+3 - 4/2x+3 x x+1/x+1 (x+6)(2x+3)/(x+1)(2x+3) - 4(x+1)/(2x+3)(x+1) (x+6)(2x+3)-4(x+1)/(x+1)(2x+3) 2x^2+15x+18/(x+1)(2x+3) <- (thats my answer) 1 solutions Answer 23448 by checkley71(8403)   on 2006-05-15 19:16:20 (Show Source): You can put this solution on YOUR website!(X+6)/(X+1)-4/(2X+3) OR [(X+6)(2X+3)-4(X+1)]/(X+1)(2X+3) OR (2X~2+15X+18-4X-4)/(X+1)(2X+3)OR (2X~2+11X+14)/(X+1)(2X+3) OR (2X+7)(X+2)/(X+1)(2X+3)
 Numeric_Fractions/37936: 8. Evaluate 2/5 divided by 3/4 and reduce to simplest form. A) 5/9 B) 8/15 C) 3/10 D) 3/4 1 solutions Answer 23447 by checkley71(8403)   on 2006-05-15 19:06:19 (Show Source): You can put this solution on YOUR website!(2/5)/(3/4) OR 2/5*4/3 OR 8/15 ANSWER IS B)
 Linear-equations/37926: what ordered pair is the y-intercept in the equation 2X+3Y=6? What ordered pair is the x-intercept? Also put 2X+3Y=6 into y=mx+b form. i got -2 Y= ---- X -2 -3 for the form and the y-intercept is -2 and the x-intercept is -3 is this correct1 solutions Answer 23446 by checkley71(8403)   on 2006-05-15 19:04:02 (Show Source): You can put this solution on YOUR website!YES. Y INTERCEPT IS -2 & X INTERXCEPT IS -3.
 Miscellaneous_Word_Problems/37915: Bob will rent a car for the weekend. He can choose one of two payment plans. The first plan costs \$53.96 for two days plus 15 cents per mile. The second plan costs \$39.96 for two days plus 19 cents per mile. How many miles does Bob need to drive for the two plans to cost the same? 1 solutions Answer 23442 by checkley71(8403)   on 2006-05-15 18:48:00 (Show Source): You can put this solution on YOUR website!53.96+.15X=39.96+.19X OR 53.96-39.96=.19X-.15X OR 14.00=.04X X=350 MILES.
 real-numbers/37914: A total of 691 tickets were sold for the school play. There were 59 fewer student tickets sold than adult tickets. How many adult tickets were sold? 1 solutions Answer 23434 by checkley71(8403)   on 2006-05-15 18:17:40 (Show Source): You can put this solution on YOUR website!X+(X-59)=691 OR 2X=691+59 OR 2X=750 OR X=750/3 OR X=375 ADULT TICKETS & 375-59=316 OR 316+375=691
 Linear-systems/37911: This is a toughie, Can you help? Water pressure (p) in the ocean is 2.3 tons per square inch at a depth (d) of 2 miles and 3.45 tons per square inch at a depth of 3 miles. How do you find the pressure at a depth of 4 miles? I think you have to write a linear equation; this is what I did when I tried. Please help! 1 solutions Answer 23433 by checkley71(8403)   on 2006-05-15 18:13:42 (Show Source): You can put this solution on YOUR website!P=2.3/2 & 3.45/3 THUS THE RELATIONSHIP OF 1.15 (2.3/3) & (3.45/3)TONS PER MILE THUS @ 4 MILES THE PRESSURE WILL BE 3.45+1.15 OR 4.6 TONS.
 Travel_Word_Problems/37771: Hi, I need help! An airplane leaves Louisville from Cleveland at a speed of 475 mph. 20 min later, a plane heading for Louisville leaves Cleveland, which is 350 miles from Louisville at a speed of 500 mph. When they meet, how far are they from Cleveland? Thank you so much!1 solutions Answer 23429 by checkley71(8403)   on 2006-05-15 17:42:29 (Show Source): You can put this solution on YOUR website!475(t+20)=500t or 475t+9500=500t or 9500=25t or t=380 so the second plane overtakes the first plane after 380 min or 6 1/3 hours. thus the Cleveland plane was flying only 6 hours (20 minutes 1/3 hour - later than the Louisville plane thus 6*500 or 3,000 miles from Cleveland
 Money_Word_Problems/37803: Donna invested her \$33,000 bonus and reieved a tatal of \$970 in interest after one year. If part of the money returned 4% and the remainder 2.25% then how much did she invest at each rate? THANK U :)1 solutions Answer 23427 by checkley71(8403)   on 2006-05-15 17:32:24 (Show Source): You can put this solution on YOUR website!x*.04+(33000-x)*.0225=970 or.04x+742.5-.0225X=970 or .0175x=970-742.5 or .0175x=227.5 or x=227.5/.0175 or x=13000 invested @4% the 33000-13000=20000 invested @2.25%
 Numbers_Word_Problems/37807: Professor Davis counts his midterm as 2/3 of the gradeand his final as 1/3 of the grade. Jason scored only 64 on the midterm. What range of scores on the final exam would put Jason's average between 70 and 79 in inclusive? THANK U MUCH :)1 solutions Answer 23425 by checkley71(8403)   on 2006-05-15 17:24:14 (Show Source): You can put this solution on YOUR website!(2/3)64+(1/3)x=70 or 42 2/3+x/3=70 or x/3=70-42 2/3 or x/3=27 1/3 or x=82 thus Jason must get at least an 82 on his final exam proof (2/3)64+(1/3)82=70 or 42 1/3+17 1/3=70 or 70=70
 Money_Word_Problems/37884: if f(x)=4x-3, find the following (solve it for a numerical answer): f(-1)1 solutions Answer 23418 by checkley71(8403)   on 2006-05-15 17:01:24 (Show Source): You can put this solution on YOUR website!f(-1)=4*-1-3 or f(-1)=-4-3 or f(-1)=-7
 Geometry_Word_Problems/37887: This question is from textbook A cassette tape costs 13.99 which includes a 6% tax. What is the pre-tax price for the tape? (round your answer to the nearest cent) 1 solutions Answer 23416 by checkley71(8403)   on 2006-05-15 16:58:46 (Show Source): You can put this solution on YOUR website!13.99/1.06=13.20 was the original price withour the tax added.
 Miscellaneous_Word_Problems/37890: A runner decides to run out in the country. He begins to run at an average rate of 9 miles per hour. He runs a certain distance and then turns around and returns along the same route at an average rate of 6 minutes per hour. If the round trip took 2 and a half hours, how far did the runner travel before turning around?1 solutions Answer 23414 by checkley71(8403)   on 2006-05-15 16:55:18 (Show Source): You can put this solution on YOUR website!x/9+x/6=2.5 or (6x+9x)=2.5*54 or 15x=135 or x=135/15 or x=9 miles thus 9/9=1 hour & 9/6=1.5 hours thus 1+1.5=2.5 hours round trip.
 Miscellaneous_Word_Problems/37891: Two students on bicycles leave their classroom building at 10:00 am ans travel opposite directions. If the average speed of one of the students is 12 kilometers per hour and the average speed of the other student is 14 kilometers per hour, at what time will they be 65 kilometers apart?1 solutions Answer 23413 by checkley71(8403)   on 2006-05-15 16:49:45 (Show Source): You can put this solution on YOUR website!14x+12x=65 or 26x=65 or x=65/26 or 2.5 hours they will be 56 miles apart
 Polynomials-and-rational-expressions/37661: This question is from textbook 4(x+3)/8x please answer this question i have been trying to answer it forever Thank You very Much1 solutions Answer 23296 by checkley71(8403)   on 2006-05-14 13:24:39 (Show Source): You can put this solution on YOUR website!4(X+3)/8X OR DIVIDING NUMERATOR & DENOMINATOR BY 4 WE GET (X+3)/2X
 Equations/37639: 1. 12-4n=4 2. 1/3(s=6)=3 3. 1/5(t-2)=0 4. -5t - 5= -51 solutions Answer 23295 by checkley71(8403)   on 2006-05-14 13:21:22 (Show Source): You can put this solution on YOUR website!12-4N=4 OR -4N=-8 OR N=2 1/3(S-6)=3 OR S/3-2=3 OR S/3=5 OR S=15 1/5(T-2)=0 OR T/5-2/5=0 OR (T-2)/5=0 OR T-2=0 OR T=2 -5T-5=-5 OR -5T=0 OR T=0
 Volume/37601: is the volume between a 5m sphere and a 9m sphere 2530.0292405333?1 solutions Answer 23294 by checkley71(8403)   on 2006-05-14 13:14:12 (Show Source): You can put this solution on YOUR website!WHAT'S THE QUESTION??????????????