Answer:
1
Step-by-step explanation:
9-8=1
21, cause if sarah had twice as mych she would have 42 and 42+21=63
Answer:
4+(x*4)
Step-by-step explanation:
A (2^2/2^-1)is the correct answer because 2^-5 * 2^8 = 8 and 2^2/2^-1 = 8.
Answer:
Multiplicative Identity Property
Step-by-step explanation: The Product of what number times one will equal the same number.