the expression 2(x²-4x-21) - (x+77) and (x-7) (x+k) are equivalent. what must be the value of k A.-148 B.-71 c.83 D.160​

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2 over 5

step-by-step explanation:

the 2: 3 ratio is the length of the ac segment to the cb segment total length. this implies that the ratio between segment ac length and segment ab length is 2: 5. point c is 2/5 from a to b, so the required fraction is 2/5.

$15.40 per mile

step-by-step explanation:

you have to round up to 4 because 6 is over 5 so you have to round the 3 up to 4