90 degrees. Looking at a clock, 12 o'clock going all the way around and back is a 360 degree spin. So 12, 3, 6, and 9 are all 1/4 of a 360 degree spin. If you divide 360 by, you would get a 90 degree turn for each of those numbers mentioned above.
40/28=10/x
Butterfly method
40x=280
/40 /40
x=7
EG is 7
Let

be an arbitrary closed region with boundary the surface

. By the divergence theorem,

We have

so that the flux satisfies

We're assuming

is a closed region, and the integral above is its volume, which must be positive. This means we must have

.
Answer:
152
Step-by-step explanation:
212-45-15=152