Solve for a. (a+6)^2=49 a −13 and 1 b −3 √6 and 3 √6 c −1 and 13 d −√43 and √43

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Your car's gasoline tank holds 18 gallons of gasoline. on a trip in canada, the tank is one-quarter full. you want to fill the tank. how many liters of gasoline are needed to fill the tank

The blue segment below is a diameter of o. what is the length of the radius of the circle?