In 1995, the average life expectancy in the United States was 75.8 years. The average life expectancy in 2015 was 78.8 years. What is the percentage increase in life expectancy in the last 20 years?

a) 3.5

b) 4

C) 4.5

d) 5

Gets Brainliest and 11pts! The volume of two spheres is shown: Sphere A = 40 cubic inches Sphere B = 10 cubic inches How many inches more is the radius of sphere A than the radius of sphere B? Round your answer to the nearest tenths. (Use π = 3.14.

Use the discriminat to describe the roots of each equation. Then select the best description 16x^2+8x+1=0 A. Double root B. Real and rational roots C. Real and irrational roots D. Non-real roots

Use the fundamental trigonometric identities to determine the simplified form of the expression

Suppose you toss a quarter, a dime and a nickel what is the probability of getting three tails?

It two angles are equal and supplementary, the angles are Select one: a. right angles b. obtuse angles c. acute angles

Three clever monkeys divide a pile of bananas. The first monkey takes some bananas from the pile, keeps three-fourths of them, and divides the rest equally between the other two.

Suppose that the event of picking a face card from a standard deck of 52 cards is considered a success.

Would the margin of error be larger or smaller for 80 % confidence? Explain. A. To be less confident, the interval needs to contain the true proportion more often, so the margin of error would be smaller. B.

A survey is being conducted in a city of 1000, 000 residents. For that purpose, a random sample of size 1000 is chosen. The survey is conducted by choosing people one at a time, with replacement and with equal probabilities.

What is the constant term in the expression 8xy - 9x2 y - 5x + 6? - 9 - 5 6 8