Please help ASAP. 40 PTS

c  80

Step-by-step explanation:

The sum of the opposite interior angles is equal to the exterior angle

x +65 = 3x-5

Subtract x from each side

x-x+65 = 3x-x-5

65 = 2x-5

Add 5 to each side

65+5= 2x-5+5

70 = 2x

Divide each side by 2

70/2 =2x/2

35=x

The sum of the angles of a triangle add to 180

x+65+b = 180

35+65+b = 180

100 +b = 180

Subtract 100 from each side

100-100+b =180-b

b = 80

answer: you will have more water.

irst, find the z score of a score of 80. this is given by the formula z = (x-u)/o, where x is the score, u is the mean, and o is the standard deviation. this gives

z = (80-78)/12 = 1/6 = .1667

now, find what percentile a z score of 1/6 correlates to in the normal distribution.

a z score of 1/6 = .1667 is equivalent to the 56.36th percentile of the distribution. so the probability a score is over this is 1-.5636 = .4364

the mean of a sample mean is equal to the original mean. however, the standard deviation of a sample mean is equal to the original standard deviation divided by the square root of n (sample size). so the new standard deviation is 12/sqrt(16) = 3.

the new z score is 80-78/3 = 2/3 = .667. this is equivalent to the 74.86th percentile. so the probability that the mean will be greater than this score is 1-.7486 = .2514.