In the past year Diane watched 22 movies that she thought were very good. She watched 40 movies over the whole year. Of the movies she watched, what percentage did she rate as very good?

55%

Step-by-step explanation:

For percentages, you need to divide the part by the whole, then multiply by 100.

In this case, = 0.55.

Then multiply by 100 to get a percentage: 0.55 x 100 = 55%

Since these pools are similar, they have a scale factor that determines the ratio between each of the sides.

VR = 12

BF = 4

12 / 4 = 3

The scale factor = 3

WZ and TM are similar sides so,

7 * 3 = 21

a = 21