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Average/399973: Evaluate -7[-8-(-6)] 1 solutions Answer 283283 by rfer(12660)   on 2011-01-26 13:33:50 (Show Source): You can put this solution on YOUR website! -7*-2=+14

test/400056: Find each sum or difference. (3x2-4x)+(5x2+7x-1) thanks 1 solutions Answer 283281 by rfer(12660)   on 2011-01-26 13:27:03 (Show Source): You can put this solution on YOUR website! 8x^2+3x-1

Equations/400065: how do i simplify 9x-18+4x 1 solutions Answer 283280 by rfer(12660)   on 2011-01-26 13:25:49 (Show Source): You can put this solution on YOUR website! 13x-18

Money_Word_Problems/400068: The suggested list price of a new car is $34,000. The dealer's cost is 85% of list. How much will you pay if the dealer is willing to accept $100 over cost for the car? 1 solutions Answer 283279 by rfer(12660)   on 2011-01-26 13:25:16 (Show Source): You can put this solution on YOUR website! 34000*0.85+100=29000

Radicals/399834: How do I solve x^2-15x+56.25=8 by using the square root property? This is what I did: (x^2-15x+56.25=8)/.25 4x^2-60x+225=32 (2x-30)(2x-30) Now I'm stuck and I don't even think I did it right. 1 solutions Answer 283145 by rfer(12660)   on 2011-01-26 00:30:24 (Show Source): You can put this solution on YOUR website! x-3.9x+7.5=2.8 -2.9x=-4.7 x=1.62

Numeric_Fractions/399840: How do you solve n-5/8=2/5; n= ? 1 solutions Answer 283143 by rfer(12660)   on 2011-01-26 00:24:34 (Show Source): You can put this solution on YOUR website! n=5/8+2/5 n=25/40+16/40 n=41/40= 1 1/40

Expressions-with-variables/399845: 5 + m/7 = 10 1 solutions Answer 283141 by rfer(12660)   on 2011-01-26 00:22:38 (Show Source): You can put this solution on YOUR website! m/7=5 m=5*7 m=35

Angles/399829: what is the value of n devided by 4 1/2 when n = 2 2/5 1 solutions Answer 283140 by rfer(12660)   on 2011-01-26 00:21:26 (Show Source): You can put this solution on YOUR website! 2 2/5 / 4 1/4 12/5*4/17=48/85

Probability-and-statistics/399855: a group of 500 students take a placement test, one particular student scores higher than 350 of the other students, what percentile is that students score? 1 solutions Answer 283138 by rfer(12660)   on 2011-01-26 00:16:58 (Show Source): You can put this solution on YOUR website! 70th percentile

decimal-numbers/399869: based on speed, what is the average of 222.089mph, 221.991mph, 220.213mph? round to the nearest thousandth if necessary. I dont know the formula to solve 1 solutions Answer 283137 by rfer(12660)   on 2011-01-26 00:13:21 (Show Source): You can put this solution on YOUR website! (222.089+221.991+220.213)/3=

Numeric_Fractions/399850: What is 5 1/4 - 2 9/16? 1 solutions Answer 283136 by rfer(12660)   on 2011-01-26 00:11:33 (Show Source): You can put this solution on YOUR website! 5 1/4 - 2 9/16 4 20/16 - 2 9/16=2 11/16

Rectangles/399867: The area of a rectangle is 3x + 12, and the width is 3. Which expression best describes the rectangle's length? 1 solutions Answer 283135 by rfer(12660)   on 2011-01-26 00:08:53 (Show Source): You can put this solution on YOUR website! L=(3x+12)/3

Travel_Word_Problems/399870: How long would it take to drive 368 miles at 55 mph? 1 solutions Answer 283134 by rfer(12660)   on 2011-01-26 00:07:39 (Show Source): You can put this solution on YOUR website! t=D/r t=368/55 t=6.64 hrs= 6 hrs 38 min

Coordinate-system/399904: determine whether 2 is a solution of the inequality x>-2 1 solutions Answer 283133 by rfer(12660)   on 2011-01-26 00:04:30 (Show Source): You can put this solution on YOUR website! x is greater than -2 so yes is a solution.

Linear-equations/399900: For some reason I am having a hard time figuring out 5>5-7y please help! 1 solutions Answer 283132 by rfer(12660)   on 2011-01-26 00:03:37 (Show Source): You can put this solution on YOUR website! y < 0

Percentage-and-ratio-word-problems/399908: At Central Park Zoo, the ratio of sea lions to penguins is 4:11. If there are 84 more penguins than sea lions, how many sea lions are there? Thank you!!! 1 solutions Answer 283131 by rfer(12660)   on 2011-01-26 00:02:01 (Show Source): You can put this solution on YOUR website! 4/x=11/84+x 11x=336+4x 6x=336 x=56 sea lions 84+x=140 penguins

Money_Word_Problems/399907: A principal of $3200 is invested at 4% interest, compounded annually. How much will the investment be worth after 6 years? 1 solutions Answer 283130 by rfer(12660)   on 2011-01-25 23:58:44 (Show Source): You can put this solution on YOUR website! A=3200(1.04)^6 A=4049

Coordinate-system/399905: from a base elevation of 8500 ft a mountain peak in colorado rises to a summit elevation of 14350 ft over a horizontal distance of 15842 ft, find the grade of the peak in % 1 solutions Answer 283129 by rfer(12660)   on 2011-01-25 23:57:16 (Show Source): You can put this solution on YOUR website! 5850/15842=37%

Numbers_Word_Problems/399712: I typed my email address wrong on my last question. 4th grade grandson has a question on his homework. Something like this--Joe had 7 more pencils than Jack, and they had 29 in all. How many did each boy have? I said 11 + 18 but I don't know how to tell him how to find the answer. Can you give me steps or an equation to show how to find the answer? 1 solutions Answer 283036 by rfer(12660)   on 2011-01-25 18:48:33 (Show Source): You can put this solution on YOUR website! ?+?+7=29 2*?=22 divide 22 by 2 ?=11 ?+7=18 I used question makes for the unknown amounts almost like setting up an algebra problem.

Equations/399698: (3x+7)^2 1 solutions Answer 283034 by rfer(12660)   on 2011-01-25 18:44:20 (Show Source): You can put this solution on YOUR website! (3x+7)(3x+7) 9x^2+21x+21x+49 9x^2+42x+49

Equations/399648: The area of triangle with base, b and height h, is given by:a=1/2bh If the area of a certain trangle is 46 square inches and the height is 20 inches, what is the base? Please show all of your work. MAY I HAVE ASSISTANCE PLZ!!! 1 solutions Answer 282993 by rfer(12660)   on 2011-01-25 17:36:21 (Show Source): You can put this solution on YOUR website! 46=0.5*b*20 46=10b b=46/10 b=4.6

Expressions-with-variables/399658: How do you solve: 5x + 24 = 8x 1 solutions Answer 282991 by rfer(12660)   on 2011-01-25 17:32:33 (Show Source): You can put this solution on YOUR website! 24=3x x=24/3 x=8

Evaluation_Word_Problems/399657: So,im learning how to do Two-step problem such as substitution heres my question F=9/5(-20)+32 I have to convert the temperature to degrees fahreheit! 1 solutions Answer 282990 by rfer(12660)   on 2011-01-25 17:31:39 (Show Source): You can put this solution on YOUR website! F=-180/5+32 F=-36+32 F=-4 degrees

Expressions-with-variables/399655: Solve for t+14>5 1 solutions Answer 282988 by rfer(12660)   on 2011-01-25 17:29:46 (Show Source): You can put this solution on YOUR website! t > -9

Numeric_Fractions/399656: I am having trouble with equations in fractions with a variable, can you help? a-1/6=-2/3 1 solutions Answer 282987 by rfer(12660)   on 2011-01-25 17:29:11 (Show Source): You can put this solution on YOUR website! a=-2/3+1/6 a=-4/6+1/6 a=-3/6 a=-1/2

Mixture_Word_Problems/399625: sprockets R Us is selling its bicycle sprockets for 2/5 of a dollar. this price shows a decrease of 1/3 of the original price. what was the original price? 1 solutions Answer 282986 by rfer(12660)   on 2011-01-25 17:27:44 (Show Source): You can put this solution on YOUR website! (2/5)/(2/3) 2/5*3/2=6/10=$0.60 .40/2/3= 0.40*3/2=$0.60

Quadratic_Equations/399614: 12x²=216 1 solutions Answer 282985 by rfer(12660)   on 2011-01-25 17:22:24 (Show Source): You can put this solution on YOUR website! 12x^2=216 x^2=216/12 x^2=18 x=4.24

Rectangles/399639: A rectangle has a perimeter of 28 cm. What is the maximum area for the rectangle? 1 solutions Answer 282984 by rfer(12660)   on 2011-01-25 17:20:23 (Show Source): You can put this solution on YOUR website! 28/4=7 7^2=49 sq cm

Average/399327: how do i figure/find the average of -10, 8, -4, 2, 7, -5, -12 1 solutions Answer 282759 by rfer(12660)   on 2011-01-24 23:54:58 (Show Source): You can put this solution on YOUR website! -14/7=-2

Expressions-with-variables/399295: The perimeter of a square is 42 feet and the sides of the square are each s ft; set up the equation expressing this. 1 solutions Answer 282758 by rfer(12660)   on 2011-01-24 23:52:34 (Show Source): You can put this solution on YOUR website! s=p/4 s=42/4 s=10.5 ft each side

test/399303: x - 22 divided by 5 = 8 1 solutions Answer 282756 by rfer(12660)   on 2011-01-24 23:50:34 (Show Source): You can put this solution on YOUR website! x-4.4=8 x=12.4