Answer:
x=8 or -8
Step-by-step explanation:
64 squared = 8 or -8
8x8=64
-8x-8 = 64
Number 1 is correct
Number 2: you just have to divide like in number one
Number 3: add 9.72 plus 5.40 and divide by 2
Answer:
The new amount is 8.
Step-by-step explanation:
80% of 40 is 32, so subtract 32 from 40 to get 8.
