Is i-5 real or imaginary, I do not understand it at all.

A study was done to determine whether the proportion of women who had accidents on Friday the 13th was greater than the proportion of men who had accidents on Friday the 13th.

If a-3b/a+b = 3/4, what are the following ratios? a+b/a

Explain how you know which coins could be used to show 0.77 of a dollar

Solve: 1/3a^2 - 1/a = 1/6a^2 The solution is a = Answer is 1/6

Write the equation of the sphere in standard form. x^2 + y^2 + z^2 + 2x - 2y - 2z = 22

Using the diagonals, determine whether or not ABCD is a rhombus? How do I show my work on this?

Factor 2n (n + 3) - 5 (n + 3). A. (n + 3) (2n - 5) B. (n + 3) (2n + 5) C. cannot be factored D. (n - 3) (2n + 5)

To play a game, all the children in class stand in a circle, The diameter of the circle is 15 feet. what is the circumference of the circle to the nearest tenth of a foot? use 3.14 for the value of PI

Another question?! Solve for x: 16x>-64

A triangle has measures that are 45 45 90 The hypothenuse of the triangle is 10 What is the perimeter of the triangle