Write -(3) to the power of 4 in expanded form?

What is the value of x when x + 7 = 21?

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =

Find two numbers if their sum is 91 and the ratio is 6: 7?