To find the area<span> of a regular </span>polygon<span>, you use an apothem, which is a segment that joins the </span>polygon's center to the midpoint of any side and that is perpendicular (<span> angle of 90°) </span>to that side
Answer:
One
Step-by-step explanation:
A, B, R and C lie on the same plane, while the others do not
(a) If
are mutually exclusive, then

so we have

(b) If
are mutually independent, then




so that



Answer: 10 students in each group
Step-by-step explanation: Add 90 + 60 which is 150
Divide 150 by 15 to find out the amount of students in each group.
150 divided by 15 is 10.