Answer:

Step-by-step explanation:
x=unknown number




simplify the fraction so... -7/2
If you go with the basic division formula and divide 42.5 by .75 you will get 56.6, but since you can’t have 2/3 of a book the correct answer would be 56
The answer is 0.18 (rounded)
Answer:
4206
Step-by-step explanation:
you would take 701 and multiply it by the number of planks for 1 trapdoor(6).
Answer:
You'll find the answer below each.
Step-by-step explanation:
1-4 you can use this formula: 
1.

2.

3.

4.

5-7 you need these 2 formulas:
and
or you can use one formula which is: 
Let me explain. The first formula is for finding the area of the base of the triangle and the second formula is for finding the volume of the prism using the area previously mentioned. The first h is with respect to the triangle and the second h is with respect to the prism.
5.

6.

7.

For the last one, we have a special case.
This formula is a bit odd and long.

a=8yd
b=15yd
c=17yd
h=11yd
![V=\frac{1}{4}(11yd)(\sqrt{-(8yd)^4+2[(8yd)(15yd))]^2+2[(8yd)(17yd)]^2-(15yd)^4+2[(15yd)(17yd)]^2}](https://tex.z-dn.net/?f=V%3D%5Cfrac%7B1%7D%7B4%7D%2811yd%29%28%5Csqrt%7B-%288yd%29%5E4%2B2%5B%288yd%29%2815yd%29%29%5D%5E2%2B2%5B%288yd%29%2817yd%29%5D%5E2-%2815yd%29%5E4%2B2%5B%2815yd%29%2817yd%29%5D%5E2%7D)

As you can see this is long. I'll just jump to the answer.
Answer: 