Hope i helped!!! good luck.
Answer:
4m
Step-by-step explanation:
<u>To combine like terms is to say to add the same variables numbers.</u>
-3m + 7m
4m
Answer: 4m
Its 81 because 729 divided by 3 and divided by 3 again is 81
The answer is in the image below
No because the maximum amount for sin and cos is 1.if alpha is 90 and beta is 0 the answer is 7 so it's not right.