That's the last one because you can factor to get
(x + 8)^2 = 36
(x + 8) = +/- 6
Both the vertical and horizontal cross-section would be a square. The cross-sections are the same because all of a cube's dimensions are the same. A cube is made up of 6 congruent square faces.
Answer:
42
Step-by-step explanation:
Average =
Sum of the terms/ number of terms
Terms here refers to the data or the values given
So,
The sum is 12+43+51+62= 168
The number of terms is 4
Therefore the average is,
168/4
= 42
Answer: Undefined
Step-by-step explanation:
4y+x=12, 2x=24-8y
Isolate x by subtracting 4y
4y+x=12
x=12-4y
Plug the equation for x in to anywhere you see the variable x in the other equation
2(12-4y)=24-8y
Distribute 2
24-8y=24-8y
Get the variables on one side so add 8y (cancels out)
24=24
Can’t solve its undefined
Yes it is an imaginary number.
