Manuela solved the equation below. 2 (*+2) = * -4 What is the solution to Manuela's equation?

How many gallons of a 60 % antifreeze solution must be mixed with 70 gallons of 10 % antifreeze to get a mixture that is 50 % antifreeze? Use the six-step method.

Solve for x. write both solutions, separated by a comma 2x^2-7x-4=0

Fred buys flags from a manufacturer for (unknown) dollars each then sells the flags in his store for a 26% markup.

What are two consecutive whole numbers that lies between 73 square rooted?

3/10 gray and 51/100 black. the rest are pink or yellow. there are more pink than yellow marbles. what fraction represents the number of pink and yellow marbles.

Mr. williams physical education class lasts 7/8 hour. how many minutes are spent warming up and cooling down if they spent 3/10?

Which is greater 1/5 or 1/10

Simplify. 4 (x - 5) + 2 (y + 6) - 10 A) 4x + 2y - 18 B) 4x + 2y + 18 C) 4x + 2y - 9 D) 6xy - 15

Suppose that IQ scores have a bell-shaped distribution with a mean of 99 and a standard deviation of 14. Using the empirical rule, what percentage of IQ scores are between 57 and 141?

Find the probablitty of z occuring in the indicated region