A housepainter mixed 4 gal of red paint with every 3 gal of blue paint in order to make a purple paint. Which ratio of gallons of red paint to gallons of blue paint will make the same shade of purple paint?

28: 15
15:20
28:21
12:3

Reason:

The purple paint has 4 parts red and 3 parts blue.

The ratio of red to blue is 4:3

Multiply both parts of that ratio by 7 and we end up with 28:21

The two ratios 4:3 and 28:21 will produce the same shade of purple.

false

step-by-step explanation:

false.   two legs of the trapezoid would be congruent, but the other two would not.   were all the legs congruent, then we'd have a square; were the 2 shorter sides congruent and the 2 longer sides also congruent, we'd have a rectangle.