For a normal distribution with mean μ = 81.2 feet and standard deviation σ = 12.4 feet, find the percent of observations between 68.8 feet and 106 feet. write your answer as a decimal and do not include any units.

A bag contains 12 red marbles, 5 yellow marbles, and 15 green marbles. How many additional red marbles must be added to the 32 marbles already in the bag so that the probability of randomly drawing a red marble is? Select your answer. 13 18 28 32 40

One side of trapezoid is 10 inches, The side parallel to this is twice as long as this side. The height is half as long as the given side length find the area of the trapezoid.

The perimeter of a standard-sized rectangular rug is 2828 ft. the length is 22 ft longer than the width. find the dimensions.

One yard is approximately 0.91 meter. Write a direct variation equation that relates x yards to y meters.

What number should be added to - 2 to get a sum of - 24

All the expression that are equivlent to 18m - 90

How many percent is the change in the price, if: the price was $75 and now it is $300?

A coin is flipped 70 times and lands on tails 42 times. What is the relative frequency of the coin landing on tails? 30% 40% 50% 60%

And auditorium has a crew of 592 seats there are 37 rows of seats and each row has the same number of seats how many seats are there in a single row

Work out tan (19pi/4) without a calculator