Answer:

Step-by-step explanation:
x and 52 are supplementary, so they add up to 180°

20-(2x6) +8 divided by 4
2 times 6 = 12
8/4 = 2
20-12+2
It would be 14 not 29
He used PEMDAS in the wrong order
Answer:
I am going with B
Step-by-step explanation:
Okay so there are 3 columns so I'm 100% you'll do the equation times 3. The equation will be addition because there is no multiplication sign there. its 54+5*3 the only thing that matches that is B
Let the length of one side of the base square be a cm.
The Volume of a pyramid is

the area of the base is a^2,
we apply the formula



a=8 (cm)
Answer: 8 cm