Kyle has been keeping his eye on a sound system that costs x dollars. the system goes on sale for 15% off the regular price. which expression can kyle use to find the sale price? a) .85x b) 1 + .15(x) c) x − .15 d) 1 − .15(x)

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

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#faazmessi

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