Sally cycle 14 miles north and 13 miles east. To return to her starting points she took the shortest distance shown in the diagr
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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.
Input data
Price model rocket = $24
Tax = $1.92
What is the percent of sales tax?
Procedure
r = percent of sales tax
The answer would be 8%