Madelina has a bag of colored cubes. She has 16 red cubes, 4 blue cubes, 8 green cubes, and 20 yellow cubes. She adds 4 red cubes to the bag. How many of each of the other colors would she need to add to keep the probability of randomly selecting 1 cube of each color the same as it was before she added the cubes? Justify your response.

2500

step-by-step explanation:

600,000,000,000, or 6e14

step-by-step explanation:

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.