Answer:
I got 2 as an answer
Step-by-step explanation:

![{x}^{4} = 16 \\ \sqrt[4]{ {x}^{4} } = \sqrt[4]{16} \\ x = 2](https://tex.z-dn.net/?f=%20%7Bx%7D%5E%7B4%7D%20%20%3D%2016%20%5C%5C%20%20%5Csqrt%5B4%5D%7B%20%7Bx%7D%5E%7B4%7D%20%7D%20%20%3D%20%20%5Csqrt%5B4%5D%7B16%7D%20%20%5C%5C%20x%20%3D%202)
True
1/2 (up the hill) - 1/2 (down the hill) = 0
Answer:
3d - 4f
Step-by-step explanation:
(12d + 28f) - 5f - (27f + 9d)
12d + 28f - 5f - 27f - 9d
(12-9)d + (28-5-27)f
3d - 4f
don't forget to put bracket, it is fundamental
Answer:
4000 
Step-by-step explanation:
V = 1/3(Bh) where B is the area of the base and h is the height of the pyramid
B = 20(20) = 400 h = 30
V = 1/3(400)(30) = 4000 