Answer:
True
Step-by-step explanation:
If a then b is true then not b = not a is true. This is called the contrapositive.
64
To find m, it has given you √x = 8. The opposite of a square root is squaring (exponentials). Simply just square 8 and you should get x = 64. You can check by square rooting 64, and you should get 8.
21 because
2.9802322e+17