Does 21,28,35 form a pythagorean triple

D ∩ F is {4, 6}. True or false?

There are nine books stacked on a shelf. the thickness of each book is either 1 inch or 2 inches. the height of the stack of 9 books is 14 inches.

A recipe calls for 5/8 cups of butter. Angie wants to triple the recipe but she has only 1 7/8 cups of butter

There are 32 students in a class. 12 of those students are girls what percent of the class are boys?

The recommended daily allowance (RDA) of the trace metal magnesium is 410 mg/day for males. Express this quantity in _g/day.

Determine how far the vehicle travels in 3 hours. A motorcycle travels 25 miles every 0.5 hour. The vehicle travels miles.

It takes a baseball player 16 seconds to round the bases and make it back to home plate home plate if it is 360 feet to go all around the bases then calculate the players average speed

Bruce and Mila are collecting baseball cards from their favorite teams, the Orioles and the Pirates. The equation r+p=28 represents the number of cards Bruce has. The equation 2r+p=43 represents the number of cards Mila has.

Kyra has a manufacturer's coupon for $5 off a box of diapers and a store coupon for 20% off any purchase. The store will let you use both coupons, but it does not have a policy about which coupon you must use first.

What does r equal? 5 (3-5r) + 3r = - (5r + 2)