24 because 20 minutes in a hr so 4 hrs that would be 4 times 3 and you get 12 times 2 becase two cells and you get 24
3/5 x 7/7= 21/35
4/7x 5/5= 20/35
They both have a common denominator
If d=rt and r=3mph and t=7hrs the equation is d=3*7. to find d multiply 3 by 7 to get 21. d=21mi
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A polynomial is considered prime if it cannot be factored into the standard linear form, that problem cannot be factored, making it prime