Which of the following correctly expresses the number in scientific notation 645,000,000

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

How many pairs of parallel sides does the trapezoid below have

What is the value of h if h = 9.0? 100h = ?

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.