Answer:
Brackets always means multiply, you multiply the power and the 4 with the number power outside
That gives you 16v^18
Step-by-step explanation:
Answer:
B c and d
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
x + 87 = 80
x = -7
87-7 = 80
Answer:
D. 80mins
Step-by-step explanation:
It's the first one.
If you work backwords, I'd say it's easier. 3y swuared is 9y2, and 11 squared is 121. Then just keep the sign the same