Circle N is shown. LIne segments L N and M N are radii. The length of L N is 4. Angle L N M is 72 degrees. Sector L N M is shaded.

What is the ratio of the sector area to the area of the entire circle?

One-fifth

One-half

2

4
(answer is 1/5)

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.