Which expression is not equal to 0?

5 - 5

-7+7

6 - (-6)

-8 - (-8)

Mason counted an average of 18 birds at his bird feeder each day for 20 days. Rosa counted an averge of 21 birds at her bird feeder each day for 16 days. How many more birds did Mson count at his feeder than Rosa couted at hers?

Of the 32 students in the class, 12 stand 5 feet 5 inches or are shorter. What is the percentile rank of a student who is 5 feet 5 inches tall?

When you add 0 to any odd or even problem is the sum always odd, even or different

Rational root theorem f (x) = x² - 64

A number cube is rolled two times. What is the probability that the sum of two numbers will be 9?

The variable x represents a value in the set f4; 6; 7; 8g. Which value of x makes 2 (x-4) + 3 = 7 a true statement?

What is 4 plus negative 2 and 1 third

The transformation: (x, y) → (x+5,7 Reflection Translation Dilation Rotation

How does doubling the measure of each dimension in a rectangular prism change the volume of the prism

How many solutions does the equation sin (5x) = 1/2 have over the interval 0,2pi