Answer:
Tina can select and answer the essay questions on her test in 35 ways.
Step-by-step explanation:
The order in which she chooses the questions is not important. For example, choosing questions 1, 3 and 7 is the same as choosing 7, 3 and 1. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
In this question:
Three questions from a set of 7. So
Tina can select and answer the essay questions on her test in 35 ways.
Answer:
Step-by-step explanation:
I think it's the 2nd one
If you mean subtraction, then its 417.
Answer:
it's answer is b
|-80+15| = |-65| = 65 units
Hope this helps :)
B.
He has used the highest recommended percentages to calculate the amounts for the three categories.