Astudents received a score of 50 on his history test. the test had a mean of 69 and a standard deviation of 10. find the z score and assess whether his score is considered unusual.

-1.9 unusual

Step-by-step explanation:

z score is (x-mean)/sd so 50-69=-19

-19/10=-1.9

$8

step-by-step explanation:

it is pretty much backwards.

you take the 4x2 multiply that, and that is = $8

the answer is (-8,-5)

step-by-step explanation:

the endpoint to midpoint is half the length. the length is (-2,-1) so when you are at the midpoint just add it to it to find your answer -6+(-2)= -8 and -4+(-1)=-5 so (-8,-5)