The mean age of 5 people in a room is 38 years.

A person enters the room.

The mean age is now 39.

What is the age of the person who entered the room?

This object is made with five identical cubes. each cube edge if 4 centimeters long, What is the surface area of this object in square centimeters.

you need 4 1/8 yards of blue silk to make one bridesmaid's dress and 3 5/8 yards of the same fabric to make another. how many yards of blue silk do you need to make both dresses?

A Web developer uses the equation y=110x+20, where x is the number of cents spent on advertising, to estimate the number of visitors a website receives in 1 day.

What is the reduced fraction form of 260%?

What is the greatest whole number thats rounds to the number 277,300? what is the least whe number

In a newspaper, it was reported that the number of yearly robberies in Springfield in 2012 was 76, and then went up by 50% in 2013. How many robberies were there in Springfield in 2013?

Find the sixth term of the sequence a (n) = 6 (n-1) (-2)

Kelsey earns $7.20 an hour at her after school job. How much will she earn if she works 12 hours and 45 minutes next week? Write an equation to match the situation and solve.

How to solve - 26+7n=-5n (n-2)

The scale of a map is 1 in : 10 mile. How many actual miles does 3 1/4 represent