D is the answer because all you have to do is solve
Answer:
d=.5
Step-by-step explanation:
Subtract 1/3 from 5/6 and you will get your answer which is .5
Answer:
Step-by-step explanation:
Definition of supplementary
Answer:
he needs to get a 91 to have a mean score of 90
Step-by-step explanation:
add up all the known scores to get 629
let 's' = lowest test score
(629 + s) ÷ 8 = 90 [we divide by 8 because there are 7 known and 1 unknown score)
cross-multiply to get:
629 + s = 720
s = 720-629
s = 91
