Answer:
A
Step-by-step explanation:
since milimetres is a smaller unit than centimetre, we will divide. We use division to convert from smaller to bigger value
If N = 8
if M = 7
then the equation is 8(2) - 7
do the multiplication first 8(2) = 16
now do the subtraction 16 - 7 = 9
It belongs to the square root family. Your answer is B. Why the square root family? Because

can be written as

When you raise to 1/2 or 1/3 it is like saying the square root or the cube root.
Answer:
your answer would be 20 because you would find what both can go into.