Answer:
B: 6
Step-by-step explanation:
Find the mean:
5+8+4+7= 24
24/4=6
Answer:
X is 30
Step-by-step explanation:
X is 30
23 plus 8 times 2
It is 11 33/40. 11 being the whole number and 33/40 the fraction
Answer:

Step-by-step explanation:
Since these are like-terms, they can be added together.
7z + 7z = 14z
4
5x - 4 = 16
Add four to both sides
5x = 20
Divide both sides by 5
x = 4