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Percentage-and-ratio-word-problems/243218: A quality control inspector examined 100 lightbulbs and found 7 of them to be defective. At this rate, how many defective bulbs will there be in a lot of 2500? 1 solutions Answer 178217 by rfer(12660)   on 2009-11-28 13:50:29 (Show Source): You can put this solution on YOUR website! 7/100=x/2500 100x=17500 x=175

Travel_Word_Problems/242833: how long does it take to go 10 metres in a car going 100? 1 solutions Answer 177810 by rfer(12660)   on 2009-11-25 22:56:07 (Show Source): You can put this solution on YOUR website! 1/10 of an hr or 6 min

test/242837: – 3(5 – 6) – 4(2 – 3) = 1 solutions Answer 177809 by rfer(12660)   on 2009-11-25 22:54:53 (Show Source): You can put this solution on YOUR website! -3(5-6)-4(2-3)= -3(-1)-4(-1)= 3+4=+7

Rectangles/242278: How do you find the lenght of the missing sides if the perimeter is 96 inches. 1 solutions Answer 177359 by rfer(12660)   on 2009-11-23 22:12:26 (Show Source): You can put this solution on YOUR website! If it is a square divide by 4, otherwise you need more information.

Travel_Word_Problems/242003: how far can a bus travel in 4 and a half hours if it average speed is 52 miles per hour? 1 solutions Answer 177178 by rfer(12660)   on 2009-11-23 11:35:21 (Show Source): You can put this solution on YOUR website! D=rt D=52*4.5 D=234 mi

Equations/242006: 35(t-1)=20t 1 solutions Answer 177177 by rfer(12660)   on 2009-11-23 11:34:02 (Show Source): You can put this solution on YOUR website! 35(t-1)=20t 35t-35=20t 15t=35 t=2

Equations/241692: describe the steps you would use to solve the equation: 4x+7=15 can you please help me 1 solutions Answer 177004 by rfer(12660)   on 2009-11-22 15:04:25 (Show Source): You can put this solution on YOUR website! 4x+7=15 subtract 7 4x=15-7 4x=8 divide by 4 x=2

Equations/241695: solving two step equations: 3x+7=19 can you please help me 1 solutions Answer 177003 by rfer(12660)   on 2009-11-22 15:02:32 (Show Source): You can put this solution on YOUR website! 3x+7=19 3x=19-7 3x=12 divide by 3 x=4

Graphs/241675: how do you graph the equation- y=1/2x+3/4 by using the x- and y- intercepts? 1 solutions Answer 177002 by rfer(12660)   on 2009-11-22 15:01:06 (Show Source): You can put this solution on YOUR website! y=mx+b m=slope=1/2 b=y int=3/4

Sequences-and-series/241680: How do I solve this problem? I am confused and not sure. The instructions just say "solve the equation". 1/x + 1/6 = 1/4 thanks. 1 solutions Answer 177000 by rfer(12660)   on 2009-11-22 14:52:28 (Show Source): You can put this solution on YOUR website! 1/x+1/6=1/4 1/x+2/12=3/12 1/x=3/12-2/12 1/x=1/12 cross multiply x=12

Sequences-and-series/241682: Show a complete solution to each problem. Find the exact length of the side of a square whose diagonal is 3 feet. Draw a square. Draw a diagonal. Let each side length be x. I don't understand what they are asking and am not sure how to solve this problem. Can someone help explain. Thanks. 1 solutions Answer 176999 by rfer(12660)   on 2009-11-22 14:46:16 (Show Source): You can put this solution on YOUR website! your using a^2+b^2=c^2 a^2+b^2=9 4.5+4.5=9 sq rt of 4.5=2.12 ft each side you put it in the form you need for class

Rectangles/241177: the width of a rectangle is fixed at 11 cm. What lengths will make the perimeter greater than 96 cm? 1 solutions Answer 176686 by rfer(12660)   on 2009-11-20 22:45:51 (Show Source): You can put this solution on YOUR website! 96-22=74 74/2>37 cm

Expressions-with-variables/241204: intermediate algebra Find the missing coordinate (-3,_____)is a solution of y=4-3x 1 solutions Answer 176685 by rfer(12660)   on 2009-11-20 22:42:38 (Show Source): You can put this solution on YOUR website! y=4-3x y=4-3*-3 y=4+9 y=13 (-3,13)

Angles/241206: find the measure of the complement of a 11 degree angle 1 solutions Answer 176683 by rfer(12660)   on 2009-11-20 22:39:43 (Show Source): You can put this solution on YOUR website! 90-11=79 degrees

Functions/241258: how long will it take for the population of a certain country to double if its annual growth rate is 3.3%? round to the nearest year. i got 21 and 9 years my freind got 61 and 1 which is correct? :) 1 solutions Answer 176681 by rfer(12660)   on 2009-11-20 22:35:16 (Show Source): You can put this solution on YOUR website! Just using the rule of 72, I get 21.8 yrs. That methode is not exact, but close.

Triangles/241252: The measure of one angle of a triangle is 28 more than the measure of the smallest angle of the triangle. The measure of the third angle is twice the measure of the smallest angle. Find all measures. 1 solutions Answer 176678 by rfer(12660)   on 2009-11-20 22:29:12 (Show Source): You can put this solution on YOUR website! x+x+28+2x=180 4x+28=180 4x=152 x=38 degrees x+28=66 degrees 2x=76 degrees

Angles/241142: The ratio of the measure of two complimentary angles is 1:5. What are the measures of the angles? 1 solutions Answer 176627 by rfer(12660)   on 2009-11-20 17:29:41 (Show Source): You can put this solution on YOUR website! x+5x=90 6x=90 x=15 degrees 5x=75 degrees

Percentage-and-ratio-word-problems/241196: lucy earns 21% less than her husband. together, they make $109,675 per year. what is lucy's annual salary? 1 solutions Answer 176626 by rfer(12660)   on 2009-11-20 17:25:49 (Show Source): You can put this solution on YOUR website! x+.79x=109675 1.79x=109675 x=$61,270.95 husband .79x=$48,404.05 Lucy

Travel_Word_Problems/241179: if jake runs 18 miles in 3 hour, what was his speed 1 solutions Answer 176625 by rfer(12660)   on 2009-11-20 17:21:16 (Show Source): You can put this solution on YOUR website! r=D/t r=18/3 r=6 mph

Coordinate-system/240514: How do I figure out how to graph the problem f(x)=2x-3 1 solutions Answer 176252 by rfer(12660)   on 2009-11-18 20:53:19 (Show Source): You can put this solution on YOUR website! f(x)=y (same thing) y=mx+b m=slope=2 (one right, two up) b=y int=-3 (0,-3)

Travel_Word_Problems/240572: if d=rt,and if r=60 and t=4,what does d equal? 1 solutions Answer 176251 by rfer(12660)   on 2009-11-18 20:50:24 (Show Source): You can put this solution on YOUR website! D=rt D=60*4 D=240

Divisibility_and_Prime_Numbers/240488: What are the correct steps to answer this problem 52 divided by 323.18 1 solutions Answer 176250 by rfer(12660)   on 2009-11-18 20:49:08 (Show Source): You can put this solution on YOUR website! 52/323.18=0.16 when dividing the problem becomes 5200 divided by 32318.

Proportions/240517: What is 14.6=k over 2.5? 1 solutions Answer 176248 by rfer(12660)   on 2009-11-18 20:45:58 (Show Source): You can put this solution on YOUR website! 14.6=k/2.5 multiply by 2.5 36.5=k

Proportions/240528: pao spent $140 of his paycheck and put the remaining $20 in his savings account. If the number of dollars he spends is proportional to the number he saves, how much of a $156-paycheck will he put into savings 1 solutions Answer 176247 by rfer(12660)   on 2009-11-18 20:43:37 (Show Source): You can put this solution on YOUR website! 20/140:x/156 140x=3120 x=$22.29

Money_Word_Problems/240567: Ms. Kork sold her car for $8,700. This was $100 more than two fifths of what she had paid for the car originally. How much had Ms. Kork paid for the car? 1 solutions Answer 176244 by rfer(12660)   on 2009-11-18 20:38:33 (Show Source): You can put this solution on YOUR website! (8700-100)/.4=$21,500

Angles/240533: An isocelles triangle has 2 50 degree angles.what is the measure of the third angle?explain 1 solutions Answer 176242 by rfer(12660)   on 2009-11-18 20:34:37 (Show Source): You can put this solution on YOUR website! 80 degrees triangle angles total 180 degrees

percentage/240552: Briana took a major test on the 5 oceans and 7 continents of the world. She got 16 out of 20 questions correct on the test. What was her percentage of correct answers? 1 solutions Answer 176240 by rfer(12660)   on 2009-11-18 20:31:08 (Show Source): You can put this solution on YOUR website! 16/20=.8=80%

Exponential-and-logarithmic-functions/240558: What is 7 to the 4th power? what is 10 to the 6th power? 1 solutions Answer 176237 by rfer(12660)   on 2009-11-18 20:29:15 (Show Source): You can put this solution on YOUR website! 2,401 1,000,000

Numeric_Fractions/240267: (Factor) which of the folowing is a factor of x2 - 5x -6? 1 solutions Answer 176110 by rfer(12660)   on 2009-11-18 11:12:32 (Show Source): You can put this solution on YOUR website! x^2-5x-6 (x-6)(x+1)

Equations/240283: hello my name is anthony and i need help with this problem cuz i am new at this and so here it is and explain it the best way you can step by step? 5(2x+3)=4(x-1)+1 1 solutions Answer 176107 by rfer(12660)   on 2009-11-18 11:08:12 (Show Source): You can put this solution on YOUR website! 5(2x+3)=4(x-1)+1 10x+15=4x-4+1 subtract 15 10x+15-15=4x-4+1-15 10x=4x-18 subtract 4x 10x-4x=4x-4x-18 6x=-18 divide by 6 6x/6=-18/6 x=-3

Linear-systems/240075: ok i need help with graphing slope and y-intercept the equation is y=3-2x 1 solutions Answer 176026 by rfer(12660)   on 2009-11-17 20:00:04 (Show Source): You can put this solution on YOUR website! y=3-2x same as y=-2x+3 y=mx+b m=slope b=y int y=-2x+3