How would I simplify this expression 7m^4/21m^5

What is the definition of exponential decay?

Given: ΔXYZ AB is a midsegment parallel to XY. The slope of AB is 2 3. What is the slope of XY?

Two angles are complementary. The larger angle is 6 more than twice the smaller angle. Write an equation to find the measure of each angle.

Which is greater 7,500,000m or 750km

Carlos wants to buy a new t. v. He is willing to spend less than $600 for 36" or smaller or more than $2000 for 42" or larger. He has a gift certificate for $400. How much more will he have to spend for either t. v?

45 is what percent of 200?

How many gallons of fuel costing $1.15 a gallon must be mixed with a fuel costing $0.85 per gallon to get 40 gallons of a fuel that costs $1 per gallon?

Solve the system of equations. - 4x + 11y = 15 x = 2y y = x=

At an IMAX theater, the giant rectangular movie screen has a width 26 feet less than its length. If its perimeter is 332 feet, find the length and the width of the screen.

A teen estimates that she sleeps 8 hours per day. What fraction of the day does the teen sleep? Write the fraction in simplest form.