Answer:
it is 40pi
Step-by-step explanation:
pi r^2 and you have 144 degrees shaded which is 40% of the circle.
You find the total volume to be 100pi and you divide by .4 (40%) to get 40pi as your answer
Answer:
25 math problems
Step-by-step explanation:
He completed 10 out of x, or the total he has to do.
10/x
We know that this equals 40%
10/x=40/100
Cross multiply to solve
40*x=100*10
40x=1000
Divide both sides by 40
x=25
He must do 25 math problems
The marked price of an article is 25% above its cost price when it is sold at a discount of 15%
You can solve this by using the expressions 12+23 and 12-23.
12+23=35
12-23=-11
35 and -11 are 23 units away from 12 on a number line.
Answer:
3, 4, -7
Step-by-step explanation:
Coefficients are the numbers in front of the variable.
