Which equation is the result of adding these two equations? {-2x + 4y = 17
3x - 10y = -3
-5x - 6y = 14
O-X-6y=14
O x-6y=14
5x+14y=20

im here

step-by-step explanation:

answer: the best estimate of the mean of the population = 14.

step-by-step explanation:

given: sheri surveyed eighty students, then generated three random samples of twenty-five student responses.

the sample mean=

⇒ the sample mean=

hence, the best estimate of the mean of the population = 14.