Mr. davis has 15 students in his class. he wants to send 3 of his students to pick up books for the class. How many combinations of his students can he choose?

455

Step-by-step explanation:

There are 15 and he chooses 3 at a time.

15 choose 3

15C3 = 455

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

u also answered this so i think u would know but i am here to

put in or use mine

homozygous. one is homozygous, while two is heterozygous.