I would say B. The second picture, it's slightly less than a 90 degree angle, so it looks like it should be that.
Hope this helps!! :)
Answer:

Step-by-step explanation:

Since there are three black shirts and 7 blue shirts, he has a 3/10 chance of picking a black.
Answer:
10 power 10 4/4
10 power 1/4
power 3 root 10 power 4
4 ROOT 10
Step-by-step explanation:
SOLUTION
The question simply means that we should find the sum to infinity of the geometric series.
The formula of sum to infinity of a geometric serie is given by

Where

So, this becomes

Therefore, option b is the correct answer