Answer:
217/31=7. He needs to run 7 miles per day.
Answer:
There's not enough information to determine the answer... is there more to this?
Answer:
Part A: chosen method is by factoring
Part B: First rewrite the equation by writing -24 as a difference so you get x² -9x - 15x + 135 = 0. Then factor out the x and the -15 from the equation so you get x(x-9) - 15(x-9) = 0. Then factor out x-9 from the equation so you have (x-9)(x-15) = 0. Finally, set each expression to 0: x-9=0 and x-15=0 and then solve: x=9 and x=15
Part C: x=9, x=15
True
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A closed circuit basically means everything is connected by wires and for this setup every device receives electricity making this true
