Answer:
210 minutes
Step-by-step explanation:
7(30) = 210
2/3x - 36 ≤ 22
+36 +36
----------------------
2/3x ≤ 58
2x ≤ 174
x ≤ 87
Hope this helps!
C. 21/45
If you multiply both the 7 and 15 by 3, you get 21 and 45.
By definition of conditional probability,

The inclusion-exclusion principle tells us

Then

Answer:
Step-by-step explanation:
To solve this you take 0 as the starting number, he lost 20 points so you subtract 20 and get -20. Next add 15 points. You then get -5. Then he got another answer right so you add 35 to -5. It the same if you say 35-5. Which gives you 30. So your answer is 30