Answer:
You can use a calculator to divide 38,700 by 45,600; you get a decimal number slightly less than one then you can proceed to shift the decimal point two spaces toward the right and you have that as a percentage when your done.
Step-by-step explanation:
Answer:
(9/10 mile)/(5/3 hour) = 27/50 miles/hour
Step-by-step explanation:
If you are looking for the speed, then speed = distance/time
speed = (9/10 mile)/(5/3 hour)
speed = 9/10 ÷ 5/3 miles/hour
speed = 9/10 × 3/5 miles/hour
speed = 27/50 miles/hour
Let's call this unknown number, x.
So we know that 4 and this number, x, are going to be added together and 6 is going to be subtracted from it. Therefore we can write the expression:

Since we cannot proceed any further without knowing either the value of x or what the expression equals, this is as simplified as it can be.
Answer:
I think its A.-30 i'm not sure
Step-by-step explanation:
Answer:
CSA of cylinder= 2πr(h+r)
=2 π×9 (21)
= 378π cm²
now
CSA of hole= 2πr
12π cm²