5. Trevon has four grades in science class so far: 97,78, 89, and 94. If he has a test coming up, what grade would he need so his overall average is at
least 90?
78,89,

what statement? is there an image?

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.