What is the y-intercept of the line graphed on the grid? у
9
60 N
(-2, 7)
4
3
(6, 1)
1
х
-9-8-7-6 -5 -4 -3 -2 -1
1
2 3 4 5 6 7 8 9
1
-2
-3
-4
-5
-6
-7
-8
-9

if farmer matt works for 8 hours a day, how many days will it take him to completely plant 12 rows of crops? each batch of cookies needs 3/4 cups of sugar.

step-by-step explanation:

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.

answer: i believe it is c

step-by-step explanation:

because 5+4=9 so it would be 3^9

3x-x+2=4 i think that's is the answer, and i hope it you