Find the indicated decile or percentile.The weights (in pounds) of 18 randomly selected adults are given below. Find the fourth decile , D4.

A. 146
B. 145
C. 144
D. 143

Answer: A

Mathematics

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Find the extrema of the function on the given interval, and say where they occur.sin x + cos x, 0 ? x ? 2?

A. local maxima: 1 at x = 0 and - at x = ;
local minima: 1 at x = 2? and  at x =
B. local maxima: 1 at x = 0 and - at x = ;
local minima: 1 at x = 2? and  at x =
C. local maxima: 1 at x = 2? and  at x = ;
local minima: 1 at x = 0 and - at x =
D. local maxima: 1 at x = 2? and  at x = ;
local minima: 1 at x = 0 and - at x =

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Mathematics

Solve the problem.A room measures 14 ft by The ceiling is above the floor. The door is by A gallon of paint will cover 78.7 ft2. How many gallons of paint are needed to paint the room (including the ceiling and not including the door)? Round your answer up to the next whole number.

A. 7 gallons B. 18 gallons C. 11 gallons D. 4 gallons

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Mathematics

Use the information in the table to solve the problem. Write your answer as a fraction in lowest terms.The table below shows the amounts of pollutants (in parts per million) in a sample of rainwater.Find the ratio of pollutant D to pollutant B.