Answer:
distribute the monomial into the polynomial and be careful of sign errors
Step-by-step explanation:
300 40
------ = -------
x 100
30000=40x
x=750.
The original price was $750
Answer:
495 combinations of 4 students can be selected.
Step-by-step explanation:
The order of the students in the sample is not important. 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.
How many combination of random samples of 4 students can be selected?
4 from a set of 12. So
495 combinations of 4 students can be selected.
Can’t see your answer choices but the absolute value of -3 is 3 so I would say 3 is your answer