What number should be added to the expression x2 + 4x to change it into a perfect square trinomial?

Social security polynominal project answers

What is the value of the discriminant, b2 - 4ac, for the quadratic equation 0 = - 2x2 - 3x + 8, and what does it mean about the number of real solutions the equation has?

Simplify the ratio (fraction) 16 ft over 4 yd.

In 2013, when she was a high school senior, Idonna scored 670 on the mathematics part of the SAT. 5 The distribution of SAT math scores in 2013 was Normal with mean 514 and standard deviation 118.

10 PUNTS (04.01 MC) If y = 8x - 2, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

What number is d in 5d-7 = - 13?

Josh has a rope that is 43 feet long. He cuts off a piece that is 10 feet long and gives it to his brother. He wants to cut the rest of the rope into pieces measuring exactly 5 feet each. How many pieces can he cut?

What multiplies to equal 50, but adds to equal 12?

Solve this perimeter equation for q in terms of P and w: P=2w+2q what is the value of q when w=4 and P=20

What type of number is 0.2782? whole number, integer, rational, irrational which ones would it be?