Solve each system of equations algebraically

2x-y=9

3x+4y=-14

Find the inverse of the following function. f (t) =, for > 0 148) =, for 1 > 0 o 1-100) =, for > 0 of-13) 25, for I > 0 o 5-10 252, for r > 0

A mannequin is dropped from the top of a fire department training tower onto a rescue trampoline 67 feet below. How long does it take before the mannequin is caught by the trampoline? Use h (t) = - 16t2 + 67.

If y=8 when x=4 find y when x=5

The standard form of the equation of a parabola is y = 5x2 + 20x + 14. What is the vertex form of the equation?

A series consists of some numbers such that the summation of the divisors of any number of that series is 1 less than twice of that number. For example, the divisors of 4 are 1,2 and 4 and the sum is 7.

Name the corresponding part if ∆RST ≅ ∆WXY ∠R= ∠X ∠W ∠Y

Given the function f (x) = 9-2x, find x when f (x) = 25 -41 17 -8

What is the answer to this equation 1/2 (10x-20) = 5x-10

The sum of four times a number and 1 is equal to three times the number

If the perimeter of the adult pinball machine is 172 inches, what is the length, in inches of G' A '?