10 is the answer.
You know that there are 4 numbers and you have to add the numbers then divide them by four to get the mean. So all you have to do is reverse the steps, multiply 30 by 4 to get 120, then add 12+50+48 to get 110. Then subtract, 120-110=10. To check if it is correct add 12, 50, 48, and 10 to get 120, then divide by 4 to get 30. And voila, there is the answer. I hope this helped for future problems like this one.
Answer:
See below.
Step-by-step explanation:
The domain is [0, ∞) and the range is (-∞, ∞).
This relation is not a function because it fails the vertical line test.
Answer:3(2x+7)-4=53-3x
6×+21-4=53-3x
6x+3x=53-21+4
9x=32+4
9x=36
X=36÷9
X=4
Step-by-step explanation:
The tent is slanted into itself, if the vertical pole stands to be 5 feet and the horizontal pole goes out 6 feet then its 3 feet per side which means the height of the tent is 3 FT.
B + 7.5 = 4.8
-7.5 -7.5
-----------------------
b = -2.7
Hope this helps!!!!!
You can also check your answer by doing replacing the number with the variable ( don't just write the anwser just because you know it, since its pre algebra you have to do it algebraically like above)
-2.7 + 7.5 = 4.8
Hope it helps!