If a = 3x^2+5-6 and b=-2x^2-6x+7 then a - b equals

The length of an object's shadow is directly proportional to the height of the object. If a 40 foot tall tree casts a 16 foot shadow, identify the constant of variation and write an equation to represent the relationship

It takes 10 people 5 days to build 25 machines. How many days will it take 15 people to build 50 machines?

Jim and Cindy, working together, can clean the house in 6 hours. Working alone, Cindy takes three times as long as Jim. How long does it take Jim to clean the house alone?

Whitestone College has a student population of approximately 4 x 10 students. Around 40,000 students attend Carr University. How many times is the number of students at Carr University as the number of students at Whitestone College? 3

How do I multiply whole fractions

Which of the following is the algebraic expression that best describes the height y, if x is the width? A. y=2x B. y=x-1/5 C. y=x+1/2 D. y=1/2x

Graph this equation -6x+5y=-10

W increased by 15 what is the alegretic expression'

Evaluate the expression. 13!/9!

Simplify (-125/64) ^-2/3