C. 17
Why:
Divide 100 by 6, round the answer and you should get 17
Evaluation of square root 169 = 13, so 10 + 13 = 23
-5.8 - (-8.4)
When we multiply two negatives they become a positive. In this situation, where there is no other number, you can assume there's basically a 1 in that place.
-5.8 - 1(-8.4) would be just as correct. (If this helps visually clarify anything.)
So we take that -1 and multiply it by that -8.4. Multiplying 1 against anything leaves it the same, so we just need to change the sign. Two negatives make a positive.
-5.8 + 8.4
Now we add these together.
This gives us our final answer of 2.6
Theoretical probability is determined through a study of the possible outcomes that can occur for the given experiment.
