In circle P, ST = 30 ft. What is the circumference of the circle? 30π ft

15π ft

10π ft

45π ft

30×pi ft

Step-by-step explanation:

ST is the diameter.

the formula for the circumference of a circle is

C = 2×pi×r

r = radius = diameter / 2

so,

C = 2×pi×30/2 = pi×30

therefore, the first answer option is correct.

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

c is the answer

step-by-step explanation: