Mrs. gibbs goes to the store to buy aa and 9v batteries. the store has 12 aa batteries and 15 9v batteries in stock. mrs. gibbs needs at least 6 aa batteries. in all, she wants to buy at least 20 batteries.

mrs. gibbs buys 7 aa batteries. how many 9v batteries could she buy?

choose all answers that are correct.

11

12

13

14

15

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x

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step-by-step explanation:

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system