Answer:
Step-by-step explanation:
Cos 2A = 2Cos² A - 1

Answer:
24.4
Step-by-step explanation:
yw
4:30 PM! Because you have to add up all the time he spent doing these activities which is 3 hours and what time is three hours before 7:30? The answer is 4:30! Hope this helps!
Answer: 3.971
Step-by-step explanation: first, you need to set up your addition problem. When adding decimals, you need to line up the decimal points. So you get something like this:
3.85
0.004
0.117
+————-
Then you add vertically and you get your answer of 3.971
Your welcome :)