a2 ------- 2a+6

a2 ------- 2a+6

how do you simplify X^3 - 64

Width:20 Length: 12x+24 of all boards(rectangles). Target within board 1 measurements(rectangle): width 6x-3 length: 2x+4. target within board 2 measurements (circle): radius 6x. target...

to paint one room. that is the end of the question. How would I write an expression to represent the number of rooms per hour each person can paint?

One number is 3 less than another. The sum of their reciprocals is equal to 7 divided by the product of the two numbers. Find the numbers.

the length of a rectangle is (x+3)/x^2+x+12. the width is (x^2+7x+12)/w^2-9. what is the area in the simplest form? Factored: (x+3)/x^2+x+12*(x+3)(x+4)/(x+3)(x-3) I...

a) The area of a rectangle is x^2+7x+13. If the length is (x+4), write an expression for the width of the rectangle, including the remainder. b) ...

If the perimeter of the rectangle is 7, what are the length and width?

Rachel pulls two tiles out of a bag of black and white tiles without replacing the first tile. The bag has 10 more black tiles than white tiles. Write and simplify an expression that represents the...

if it takes two people 20 minutes to dig a hole and it takes one of the people 25 minutes to dig the hole by himself, how long will it take the second person to dig the hole individually

Rest of the word problem here. Write an equation that gives the total driving time t (in hours) as a function of his average speed r(in miles per hour) when driving to the city. Then find the...

How do I set this up?

not sure what the domain restrictions are for x^2 = -9

an empty jar has a mass of 200 grams. A full jar contains 110 grams of spice. The company sells n jars filled with spice. Select the best interpretatin of the expression (200+110)n a...

in 5 hours a secretory can address 100 envelopes another secretory can address 100 envelopes in 6 hours how long would it take the secretaries working together to address 300 envelopes

Choose the appropriate forumal. Includ the unit in your answer.

find the domain of the rational expression.

jo and Casey warm up for a track meet by running some laps. jo takes 3 minutes per lap while Casey takes 5 minutes to run the same lap. If Casey started running and jo starts a minute later, how long...

Eight times the reciprocal of a number times 2 times the reciprocal of 9

Maria bought 3 pounds of grapes for $0.90 per pound. How many pounds of oranges costing $1.25 per pound must she purchase so that the total cost for fruit is $1 per pound