What is a variable?

a.

A variable is an unknown number or value represented by a letter

c.

A variable represents a change in value

b.

A variable always represents the total amount

d.

A variable is always represented by the letter x

True or false if angle ABC similar to Angle DEF, the sides of angle ABC must be congruent to the corresponding sides of Angle DEF

A bike is bought for $940 and sold 10 months later for $800. Find the depreciation equation.

What is the diameter of a circle with a circumference of 132ft Use 22/7 for pi.

Choose the best response to explain why 3 (x+12) = 3 (x+5)

Write your expression for 25 less than 53 and 5

Mark withdrew $25 from his bank account write this amount as a integer

Mary open a bank account and deposits $16.00. Every month she deposits $30.00. Which expression shows the amount of money in her account after m months?

Question 1: Which ordered pairs are a solution to the equation y=2x+6 Select all that apply (0,6) (-1,4) (-1,-4) (3,12) Question 2: Which ordered pairs are a solution to the equation y=4-2x Select all that apply (-1,2) (0,4) (-1,6) (1,6)

The mass of Pluto is approximately 1•10^22kg, while the mass of Neptune is approximately 1•10^26kg. Which of the following is true? A. The mass of Neptune is approximately ten thousand times that of Pluto. B.

Find the discriminant. u2-2u-5=0