Answer:
See below
Step-by-step explanation:
Angle A is congruent to Angle C because of alternative interior angles
ABE is congruent to CDE because of ASA
150 degrees because supplementary angles add up to 180 degrees
Simple.....
you have

to find what a is....simplify/multiply both sides....

simplifying it too....
18=7a


Thus, your answer, C.
Answer:
white: 1/3, blue: 1/4, red: 5/12
Step-by-step explanation:
Take the amount of balls each color has and divide by 12.
White:
4/12 = 1/3
Blue:
3/12 = 1/4
Red:
5/12 (can't simplify)