The lifespans of gorillas in a particular zoo are normally distributed. the average gorilla lives 20.8 years; the
standard deviation is 3.1 years.
use the empirical rule (68 – 95 - 99.7%) to estimate the probability of a gorilla living less than 23.9
years.

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply

Ineed to know the answer to this algebra question.