How to find a vector in the null space of a matrix?

How are exponents and roots related to one another? What happens when you square a square root? Can you think of any other roots other than square roots?

Which direction would the graph of y=-|x|+9 open?

Solve the equation. x+7=-8

152.5 is what percent of 61

A new soup recipe contains 3 3 % 33% less sodium per serving than the old soup recipe. The old soup recipe contained x x milligrams of sodium per serving.

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)