Write the trinomial as a square of a binomial or as an expression opposite to a square of a binomial: –42a+9a^+49

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step-by-step explanation:

the answer is 45 i just did it on oddesy ware

10010010001010010101001001010010100101010010101010010010101010110010001011010010010001

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have