Donna has 8 CDs that she is going to give away. She lets her best friend choose 2 of the 8 CDs. How many different groups of 2 CDs are possible?

Multiply each polynomial (x + 5) (x+4) teach me step by step

According to Dolbear's law, you can predict the temperature T (in degrees Fahrenheit) by counting the number x of chirps made by a snowy tree cricket in 1 minute. For each rise in temperature of 0.

If the function g is the inverse of the function f predict f (g (x)) and g (f (x)).

Which best describes how to create a fraction bar in which the shaded portion represents? Divide a rectangle into 7 equal parts and shade 5 of the parts. Divide a rectangle into 12 equal parts and shade 5 of the parts.

On a recent shopping trip, Arnold started with $150. He spent these amounts at various stores $49.81, $32.43, $25.90, $14.58, $23.33. How much remained of $150 when he was finished? Estimate by rounding amounts to the nearest dollar then computing

Graph the system. What is the solution and what does it represent

Solve x2 = 12x - 15 by completing the square. Which is the solution set of the equation? A ... (-6-square root of 51,-6 + square root of 51) B ... (-6 - square root of 21,-6 + square root of 21) C ...

The product of two numbers is 4235. If one number is 7, find the other number

How do you solve (-1) ^2

Identify the type of system for y=-x+4 and 2x+2 y=8