This math is known as permutations- the arrangement of a set of objects. A way that I use to solve these problems was by just multiplying the numbers, so the singer's can be selected in 28 ways.
It is a scalene triangle. All sides are of different lengths.
21 is the real answer
because of BODMAS
Total cost: 148 x 79.5 = 11,766
7% of 11,766 = 11,766 x 7 = 82.362/100 = 823,62
so, his commision was of 823,62
Answer:
a
Step-by-step explanation:
