The lifespans of gorillas in a particular zoo are normally distributed. The average gorilla lives 16 years, the standard deviation is 1.7 years.
Use the empirical rule (68 – 95 - 99.7%) to estimate the probability of a gorilla living between 14.3 and
19.4 years.

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation:

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.

answer: 72: 111

step-by-step explanation: