Explain why this statement is true:

7a + 4 - 2a = 7a + (-20) + 4

Harvey wants to buy a gift for his father that costs $35.92 and a gift for his sister that costs $52.08. He has saved $16.28. How much more does he need to save in order to buy the gifts?

What is the value of s? A) 44° B) 47° C) 49° D) 53°

If a randomly generated list of numbers from 0 to 5, the chance that each number can occur is 1/5 True. or. False

A sphere with a diameter of 8 inches. What is the surface area of the sphere shown? 16Pi in2 32Pi in2 64Pi in2 256Pi in2

In ΔABC, if a = c = 16 centimeters and m∠B = 85°, what is b to two decimal places?

The diagonal of a rectangle is 100 units. The width is 80 units. What is the area of the rectangle in square units.

Is 9m=9m the answer for 3 (m-3) = 3m-9? if not what is the answer?

During bully's first week working in China shop he breaks a vase that cost $45.89 two glasses that cost $16.25 each and a platter that cost $135.49 if he makes $5.25 an hour how many hours will we have to work to pay for the things he broke

How do I graph and find slope intercept for for x+y=0

Simplfiy 12 the square root of 3 over12 and the square root of 7?