Assume that when adults with smartphones are randomly selected, 63% use them in meetings or classes, if 15 adult smartphone users are randomly selected, find the probability that exactly 12 of them use their smartphones in meetings of classes
The probability is

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)