What is the numerical expression of the sum of 21 and 4 doubled

A small plane flies at an altitude of 1500 feet. juan looks up at a 75 dgree angle of elevation and sees the plane. 15 seconds later, the plane was visible at 50 dgree angel. A. How far in feet did the plane travel in those 15 seconds.

A man is trying to calculate the shadow of a 24 flag pole. He uses similar triangles by comparing his own height 5 ft to the length of his shadow 2.5. Set up the proportion and solve for the length of the pole's shadow.

What is the following quotient? 9+square root of 2 divided by 4-square root of 7

1. A company has $6582 to give out in bonuses. An amount is to be given out equally to each of the 32 employees.

The temperature of dry ice is - 109.3°f-109.3°f. this is 184.9°f184.9°f less than the outside temperature. write and solve an equation to find the outside temperature tt (in degrees fahrenheit).

The nine cats in a pet store were weighed. their weights (in pounds) are given below., 9, 1, 1, 9, 5, 9, 5, 9 4 find the range and the mode for the data

Evaluate without using a calculator by using ratios in a reference triangle. cos 5pi/3

Kimberly has five puppies the weight of the puppies are 6 pounds and 14 lb and 6 pounds in foot pounds and seven pounds what is the weight of the puppies

What property is (14-6) + 3=8+3

Carmen sells electronics. She made a 10% commission on every dollar sale that she makes. One month Carmen got a commission check for $2,500. What were her sales in dollars that month?