A permutation is any ordered subset of the objects r selected with regard to their order, from the set of n distinct objects. It is given by nPr where n> r

Total number is 13 and required number is 2

n= 13 and r= 2

13 P2= 156 possible combinations.

A combination is any subset of the objects r selected without regard to their order, from the set of n distinct objects. It is given by nCr where n> r

5 0

3 years ago

The football team has a total of 20 jerseys. There are 4 medium sized jerseys. What percent of the jerseys are medium-sized?

Reil [10]

$\frac{4}{20} = \frac{1}{5} = 20$
20% are medium-sized

6 0

3 years ago

Read 2 more answers

Use the expression 9(7 + 2x) to answer the following:

lianna [129]

Step-by-step explanation:

Part A:

The two factors in 9(7+2x) are 9 and 7+2x

Part B:

First term: 9

Second term: 7+2x

Part C:

9(7+2x)

Open bracket

63+18x

The coefficient is 18x

4 0

3 years ago