Mari is adding (-7) and (-2). She adds their absolute values and says the answer is 9. What did Mari forget?

A
that 0 is neither positive nor negative

B
to move left on the number line

C
to keep the sign of the larger integer

D
to keep the sign of the two integers being added

D

to keep the sign of the two integers being added

Step-by-step explanation:

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x