as the following pic you can see the answer.
#diameter is 8 so radius is 4
Answer:
Let us assume the total number of students surveyed = x
Then
Number of students preferring red = x/4
Number of students preferring blue = x/8
Then
Number of students remaining = x - [(x/4) + (x/8)]
=x - [(2x + x)/8)
= x - (3x/8)
= (8x - 3x)/8
= 5x/8
Number of students preferring the color green = (3/5) * (5x/8)
= 3x/8
We also know that the total number of students preferring the color green is 15
So
3x/8 = 15
3x = 15 * 8
x = (15 * 8)/3
= 5 * 8
= 40
So in total 40 students were surveyed. I hope the procedure is clear to you.
Step-by-step explanation:
Answer:
It is D
Step-by-step explanation:
You have to divide each side by k to get x by itself. So,
Answer:
5.3
Step-by-step explanation:
r = (3V/4pi)^1/3
A right angle = 90 degree
BOC = 3/5 of the right angle
= 3/5 x 90
= 54 degree
