trapezoid w′x′y′z′ is the image of trapezoid wxyz under a dilation through point c. what scale factor was used in the dilation?

The correct answer is:

7/3

Explanation:

The image, W'X'Y'Z', is larger than the pre-image WXYZ.  The new side given to us is 14, compared to the old side of 6; this gives us the ratio

14/6

This can be simplified by dividing top and bottom by 2:

(14÷2)/(6÷2) = 7/3

This is the scale factor.

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000