Answer: 72
Step-by-step explanation:
From the question, we are informed that a disc jockey can play 7 records and that there are 9 records to select from for a particular segment of a radio show.
The number of ways that the program for the segment be arranged will be:
= 9! / 7!
= (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1) / (7 × 6 × 5 × 4 × 3 × 2 × 1)
= 9 × 8
= 72
I think it is 36 because you would have to multiply the numbers.
-Dhruva;)
Answer:
y = -7.5 I believe
Step-by-step explanation:
<span>Rewrite the subtraction as addition 3- (-10)
= 3 + 10</span>
Answer:
x =
of y
Step-by-step explanation:
Given:
15% of x equals 20% of y
So,
0.15x = 0.20y
so
x = 0.20 y / 0.15
x = 1.3333y
x =
of y