Answer:
n=8
Step-by-step explanation:
n/2+3=7
-3 -3
n/2 = 4
*2 *2
n=8
Answer:
x = 10 , 45 degrees.
Step-by-step explanation:
This seems a tricky one .
I guess we can use sin A + sin B = 2 sin (A+B)/2 cos (A - B) / 2
so sin 5x + sin x = 2 sin 3x cos 2x so our equation becomes
2 sin 3x cos 2x - cos 2x = 0
cos 2x ( 2 sin 3x - 1) = 0
so 2 sin 3x = 1
sin 3x = 1/2
giving 3x = 30 degrees and x = 10 degrees
or cos 2x = 0
so 2x = 90
giving x = 45 degrees.
Answer:
261/20
Step-by-step explanation:
=54/5+(35/4-13/2)
= 54/5+9/4
=261/20
You can use calculator. It's easier.
Answer:
16
Step-by-step explanation:
First, subtract 3200 from 6000.
Then, divide the answer, 2800, by 175.
You should end up with 16 as your answer.
Answer:
≈ 8.5 hours
Step-by-step explanation:
Temperature rise is
Total temperature rise is
Time = 20.46/2.4 = 8.525 hours ≈ 8.5 hours
