Mr. jefferson has 20 students in his class. he wants to send 4 of these students to pick up books for the class.

how many combinations of 4 students can he choose?

116,280

80

5

4845

Step-by-step explanation:

The number of  students in the class = 20

Students to pick up books for the class = 4

Here n = 20 and r = 4

To find, the total number of combinations of 4 students can he choose = ?

∴

Using the formula,

= 4845

The total number of combinations of 4 students can he choose = 4845

Hence, the required "option d) 4845" is correct.

175

step-by-step explanation:

2 inches x 10 miles = 200 miles - 3 inches = 175

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3