Adjacent angles of a parallelogram are supplementary, so you have
... 78° + 3y° = 180°
... 3y = 102 . . . . . . . subtract 78
... y = 34 . . . . . . . . divide by 3
The appropriate choice is
... C. 34
The answer to this question is D
Answer:
Mean = 29300
median = 23500
Modal = 23000
Step-by-step explanation:
Mean = Add them all and divide by 10
= 29300
median = average of (rank of 5th and 6th)
= (23000 + 24000) /2
= 23500
Modal = appear the most
= 23000
