Asap

solve each equation

7) 7(3 - 5k) - 4 = -263

8) 6(-5 - 5n) = 90

9) -6(8 + 2b) = -120

10) -168 = 7(8p - 8)

relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.

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

might be the correct answer will be question number 2

cluster sampling.

step-by-step explanation: