In one season a basketball player missed 20 % of her free throws. How many free throws did she attempt if she made 128 free throws?

She made 640 free throw attempts.

Step-by-step explanation:

First, you use the information from the question to make the equation 128/x = 1/5.

Next, you cross multiply 128 by 100 and I got 12800.

And you continue to cross multiply 20 by x.

Now, the equation you should have is 20x = 12800

You divide 20 by 12800 and you get 640.

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.