Answer:

Step-by-step explanation:
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130 you multiply the left side by 13 to get the right side.
Answer:
60
The angle acute so my guess is 60
Hope this helps :)
20 total marbles....7 are green
probability on first draw is 7/20...and since the marble was not replaced, the probability on the second draw is 6/19. And since they cant happen at the same time, we multiply
7/20 * 6/19 = 42/380 which reduces to 21/190
X=100
360-63= 297
297-80=217
217-100=117
117/3=39