17. Do these ratios form a proportion?
4 old cars to 12 new cars
6 old cars to 18 new cars

To check

4:12::6:18

4:12 in lowest form= 1:3

6:18 in lowest form= 1:3

So, The statement is true

Please mark as Brainliest!

A = 75°

B = 90°

C = 15°

Step-by-step explanation:

The diagram tells us that C = 15°.

The diagram places a square in the angle of B, showing you the angle is a 90° right angle.

You can solve for A because all angles of a triangle must equal 180°. 180° - 90° (B) = 90°. 90° - 15° (C) = 75°, the measure of A.