Algebra

Which of the following Equation is NOT equivalent to 25x^2 = y^2 - 4?

Which of the following equations has a root in common with x 2 − 6 x + 5 = 0 ?

If x y = 2 3 , then x − y x ?

If y = (x – 5) 2 + (x + 1) 2 – 6 , then y is least when x =

If 3/x = 2 and y/4 = 3, then (3 + y)/(x + 4) =

If -3 is 6 more than x, what is the value of x/3?

If x = (0.08) 2 , y = 1 (0.08) 2 and z = (1 − 0.08) 2 − 1 , which of the following is true?

On the number line, if r < s, if p is halfway between r and s, and if t is halfway between p and r, then (s - t)/(t - r) =

If 3 - x = 2x - 3, then 4x =

Of the following, which one is third greatest?

If a = 7 and b = − 7 , what is the value of 2 a − 2 b + b 2 ?

A certain pair of used shoes can be repaired for $12.50andwilllastfor1year.Apairofthesamekindofshoescanbepurchasednewfor$28.00 and will last for 2 years. The average cost per year of the new shoes is what percent greater than the cost of repairing the used shoes?

If a b = 2 3 which of the following is not true ?

If n is a positive integer and k + 2 = 3^n, which of the following could NOT be a value of k ?

(3 √ + 2) (3 √ − 2) = (3 + 2) (3 − 2) =

If x = -(2 - 5), then x =

If x = -1, then -(x^4 + x^3 + x^2 + x) =

If x is a number such that x 2 − 3 x + 2 = 0 and x 2 − x − 2 = 0 , what is the value of x ?

If one root of the equation 2x^2 + 3x – k = 0 is 6, what is the value of k?

If p = 0.2 and n = 100, then p (1 − p) n − − − √ p (1 − p) n =