2y to the second power= 4y
-6y to the second power= -36y
Step-by-step explanation:
-x+5+6x-7x-14
6x-8x+5-14
-2x-9
Answer:
D. 100
Step-by-step explanation:
Mean = Sum of all numbers divided by the count of all numbers
Mean = 50
Let say that the sum of all numbers = X
50 = X / 4
200 = X
X = (20+30+50) + The 4th Value
200 = 100 + 4th Value
The 4th Value = 100