The following table shows the probability distribution for a discrete random
variable.
| X
P(X
12
0.07
15
0.21
17
0.17
20
0.25
22
0.05
24 | 25 | 30
0.04 0.13 0.08
an
The mean of the discrete random variable X is 19.59. What is the variarice
of X? Round your answer to the nearest hundredth.

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

b. hannah is playing with her cousin at