21.9 is the answer so I hope you get it right
Answer:
11
Step-by-step explanation:
C²=23
2C=0
C=2
Substitute C=2 in the first equation 2C=23
2C=23
C=11.5
Approximately C=11
Answer:
Step-by-step explanation:
So first we combine like terms on the left
1-7=-6
then we have
-7x-6=15
next we add 6 both sides
-7x-6=15
+6 +6
-7x=21
then we divide -7 each side
we get
x=-3
Answer:
8 in
Step-by-step explanation:
In a cube, the length, width, and height are all the same.
Answer:
b) quadratic
Step-by-step explanation: