Malaya is making a collage of her birthday party photos and she wants to add an 8 x 10 inch. photo. since there is not enough space left on the collage, she must trim the photo. if the scale factor from the original to the trimmed photo is 5: 4, the new dimensions of the photo are
a. 7 x 9 in
b. 6.2 x 7.6
c. 6.4 x 8 in
d. 5.4 x 6.8

The answer is C. 6.4 X 8 in

Step-by-step explanation:

If the scale factor from the original to the trimmed photo is 5:4

The statement above just means the scale of the old dimension is 5 while the scale of the new dimension is 4.

To get the new dimensions, multiply each of the old dimensions by 4/5

4/5 X 10 = 8

4/5 X 8 = 6.4

Therefore the new dimension is 6.4 X 8 in

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: