Marcus solved for x in the quadratic equation x2 – 10x + 25 = 0. x = x = x = what is true about marcus’s work? check all that apply. marcus should have substituted –10 for b, not 10. the denominator should be 1, not 2. marcus should have subtracted 4(1)(25) in the square root. this equation, when solved correctly, only has 1 real number solution. this equation has 2 real number solutions.

i think it would be 42cm

answer: it's d

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