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Proportions/326616: a car travels at 20 meters per second what is its rate in kilometers per hours 1 solutions Answer 233855 by rfer(12730)   on 2010-07-28 21:20:59 (Show Source): You can put this solution on YOUR website! 20*3600=72000 72000/1000=72 kph

Money_Word_Problems/326530: you want to invest 1000 in to a savings account. which option is best for reaching your goal of 5000 A.) interst of 3% compounded semi annualy B.) interst of 45% compounded yearly c.) Interest of 25% compounded quarterly 1 solutions Answer 233854 by rfer(12730)   on 2010-07-28 21:18:36 (Show Source): You can put this solution on YOUR website! A=5000(1+.03/2)^2 A=5000*1.03 A=5151.13 ---------------- A=5000(1+.045) A=5000*1.045 A=5225.00 ---------------- A=5000(1+.025/4)^4 A=5000*1.00625 A=5031.25

Money_Word_Problems/326594: 3. Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450? 1 solutions Answer 233851 by rfer(12730)   on 2010-07-28 21:07:37 (Show Source): You can put this solution on YOUR website! 450*.85=382.50 382.50*.8=$306

Money_Word_Problems/326601: The amount of simple intrest earned in an account varies jointly as the amount of principal invested and the amount of time the money is invested. If $6,000 in principal earns $840 in interest after 2yr, then how much intrested will be earned on $4,500 invested for 8yr? 1 solutions Answer 233849 by rfer(12730)   on 2010-07-28 21:04:08 (Show Source): You can put this solution on YOUR website! 840=6000*r*2 840=12000r r=0.07=7% ----------------- i=4500*0.07*8 i=$2,520

Graphs/326486: y is greater than or equal to x and x is greater than or equal to 1 1 solutions Answer 233789 by rfer(12730)   on 2010-07-28 18:14:21 (Show Source): You can put this solution on YOUR website! y=>x=>1

Money_Word_Problems/326505: On the day a person is born, a deposit of $50,000 is made in a trust fund that pays 8.75% in interest, compounded continuously. A.) Find the balance on the person 35th birthday B.) How much longer will the person have to wait for the balance to double? 1 solutions Answer 233783 by rfer(12730)   on 2010-07-28 18:11:52 (Show Source): You can put this solution on YOUR website! A=50000(2.7183)^.0875*35 A=50000(2.7183)^3.0625 A=50000*21.38138 A=1,069,069.02 ------------------- Rule of 72 72/8.75=8.2 yrs not exact but very close

Inequalities/326519: 1/2(2x-2)=1/3(2x+4) Could someone please solve this in steps for me? 1 solutions Answer 233779 by rfer(12730)   on 2010-07-28 17:59:51 (Show Source): You can put this solution on YOUR website! x-1=2/3x+4/3 -1/3x=7/3 x=-21/3 x=-7

Linear-equations/326533: Please help! Use the intercepts to graph the equation. x+3y=6 1 solutions Answer 233776 by rfer(12730)   on 2010-07-28 17:53:44 (Show Source): You can put this solution on YOUR website! x+3y=6 (0,2) (6,0)

Money_Word_Problems/326540: Ernesto invested $25,000 in a CD that paid 5% compounded annually for 6 years. what was the vaue of his investment at the end of the sixth year 1 solutions Answer 233774 by rfer(12730)   on 2010-07-28 17:50:16 (Show Source): You can put this solution on YOUR website! A=25000(1+.05)^6 A=33,502.39

Money_Word_Problems/326537: A computer is purchased for $3200. Its value each year is about 79% of the value the preceding year. Its value, in dollars, after t years is given by the exponential function Find the value of the computer after 2 years. 1 solutions Answer 233770 by rfer(12730)   on 2010-07-28 17:48:24 (Show Source): You can put this solution on YOUR website! V(t)=3200(.79)^2 V(t)=1997.12

Expressions-with-variables/326256: Evaluate the following expression for r = -4 and t = 3 3r – 5t – 4rt 1 solutions Answer 233553 by rfer(12730)   on 2010-07-27 21:11:50 (Show Source): You can put this solution on YOUR website! (3*-4)-(5*3)-(4*-4*3) -12-15+48=11

Expressions-with-variables/326258: Evaluate the following expression for p = 2 and n = -4 5n - 3p/p 1 solutions Answer 233552 by rfer(12730)   on 2010-07-27 21:09:57 (Show Source): You can put this solution on YOUR website! 5*-4-3*2/2 -20-6/2 -20-3=-23

Triangles/326259: How many Square feet are in a triangle that measures 42 Feet on all three sides? 1 solutions Answer 233551 by rfer(12730)   on 2010-07-27 21:07:51 (Show Source): You can put this solution on YOUR website! 42*42/2=882 sq ft

Equations/326075: here is and multiplication inequality can you help me -4x-7>5 1 solutions Answer 233538 by rfer(12730)   on 2010-07-27 20:38:53 (Show Source): You can put this solution on YOUR website! -4x>12 x>-3

Volume/326072: if you add 50% to the length heigh and width of a rectangal, how much in percent does the volume increase? 1 solutions Answer 233537 by rfer(12730)   on 2010-07-27 20:37:01 (Show Source): You can put this solution on YOUR website! 2*2=4 3*3=9 9/4=2.25=225% increase

Sequences-and-series/326184: Please help me determine the 7th term of the geometric sequence 2, 4/3, 8/9, 16/27... 1 solutions Answer 233535 by rfer(12730)   on 2010-07-27 20:32:45 (Show Source): You can put this solution on YOUR website! ...32/81, 64/243, 128/729

Linear-equations/326244: graph the equation using the slope and the y-intercept. y=9/8x+3 1 solutions Answer 233530 by rfer(12730)   on 2010-07-27 20:09:33 (Show Source): You can put this solution on YOUR website! y int=3 (0,3) slope=m=9/8 eight right, nine up

test/326193: How many factors are in the expression 5^3*5^6? 1 solutions Answer 233529 by rfer(12730)   on 2010-07-27 20:08:06 (Show Source): You can put this solution on YOUR website! 5^3*5^6=5^9=1953125

Linear-equations/326241: -1/4(x-8)+1/2(x+2)=x+9 Could someone help to explain how to solve this? I seem to be having a problem with solving linear equations. I can usually get the first part, and then I lose it. Could you please explain the steps, as the textbook doesn't seem to explain it to my understanding. Thanks so much. 1 solutions Answer 233526 by rfer(12730)   on 2010-07-27 20:05:20 (Show Source): You can put this solution on YOUR website! -1/4(x-8)+1/2(x+2)=x+9 -1/4x+2+1/2x+1=x+9 1/4x=6 x=6/(1/4) x=6*(4/1) x=24

Radicals/326242: -8(4-12 m)-12(7+3m)=64   how do I solve this equation 1 solutions Answer 233523 by rfer(12730)   on 2010-07-27 20:00:55 (Show Source): You can put this solution on YOUR website! -8(4-12m-12(7+3m)=64 -32+96m-84-36m=64 60m-116=64 60m=180 m=3

Sequences-and-series/326182: Please help me with this: Telephone poles are stored ina pile with 20 poles in the first layer, 19 in the second and so on. If there are 12 layers how many telephone poles does the pile contain? 1 solutions Answer 233522 by rfer(12730)   on 2010-07-27 19:57:36 (Show Source): You can put this solution on YOUR website! 174

Distributive-associative-commutative-properties/326220: 4 + 7(x - 12) = -38 1 solutions Answer 233519 by rfer(12730)   on 2010-07-27 19:52:15 (Show Source): You can put this solution on YOUR website! 4+7x-84=-38 7x=42 x=6

Linear_Equations_And_Systems_Word_Problems/326236: Write an equation to help you answer the question: A shirt costs $18. It is taxed at a rate of 8%. What is the total cost? 1 solutions Answer 233518 by rfer(12730)   on 2010-07-27 19:47:23 (Show Source): You can put this solution on YOUR website! 18*1.08=19.44

Rectangles/326198: its summer and i forgot how to do these kind of problems please help me understand it, the area of a rectangle is 48 sq ft. find all side lengths. the length is 3x and width is 4x 1 solutions Answer 233495 by rfer(12730)   on 2010-07-27 18:02:24 (Show Source): You can put this solution on YOUR website! 3x*4x=48 12x^2=48 x^2=4 x=2 -------------- 3*2*4*2=48

Inequalities/326203: 2/5x+4<1/5x+9 1 solutions Answer 233493 by rfer(12730)   on 2010-07-27 17:59:51 (Show Source): You can put this solution on YOUR website! 1/5x<5 x<25

Proportions/325680: On a house plan on which 2 inches represents 5 feet, the length of a room measures 7 1/2 inches. The actual length of the room is. I know how to set the problem up but don't know the next step. 2 inches/7 1/2 inches = 5/x I know to cross multiply what next Please help. 1 solutions Answer 233218 by rfer(12730)   on 2010-07-26 16:59:24 (Show Source): You can put this solution on YOUR website! 1 in = 2.5 ft 2.5*7.5=18.75 ft ---------------- 2/7.5=5/x 2*x=5*7.5 2x=37.5 x=18.75 multiply the extremes multiply the means

Linear-equations/325705: Gwen sold her car on cosignment for x dollars. the saleswomen's commission was 10% of the selling price and Gwen recived 6570. 1 solutions Answer 233216 by rfer(12730)   on 2010-07-26 16:53:48 (Show Source): You can put this solution on YOUR website! 6570/.9=7300

Linear-equations/325707: After getting a 15% discount on the price of a new chrysler sebring convertible, Helen paid $27,000. what was the original price of the converible to the nearest dollar. 1 solutions Answer 233214 by rfer(12730)   on 2010-07-26 16:49:29 (Show Source): You can put this solution on YOUR website! 27000/.85=31,765

percentage/325767: A car dealer sells a SUV for $39,000, which represents a 25% profit over the cost. What was the cost of the SUV to the dealer? 1 solutions Answer 233213 by rfer(12730)   on 2010-07-26 16:46:31 (Show Source): You can put this solution on YOUR website! 39000/1.25=31,200

Distributive-associative-commutative-properties/325495: can i get heelp with this problem: -3(x-5)=-5(-3-4x) 1 solutions Answer 233077 by rfer(12730)   on 2010-07-25 19:35:28 (Show Source): You can put this solution on YOUR website! -3x+15=+15+20x -23x=0 x=0

Inequalities/325501: It has been determined that at the age of 10, a girl has reached 84.4% of her final adult height. Dana is 4 ft 8 in. at the age of 10. what will her final adult height be? 1 solutions Answer 233076 by rfer(12730)   on 2010-07-25 19:33:33 (Show Source): You can put this solution on YOUR website! 4 2/3/.844=5.5 ft= 5 ft 6 in