-17+2(-3)^2
-17+2(9)
-17+18
1
If this is a cube and each side is 6ft, each face will have an area of 6ft * 6ft, or 36ft. There are 6 faces on a cube, so 36ft * 6 = 216ft² as the surface area (it's also the same as 6³, fancy huh?)
Answer:
Distributive Property
Step-by-step explanation:
a(b + c) = ab + ac
ANSWER
![{i}^{31} = - i](https://tex.z-dn.net/?f=%20%7Bi%7D%5E%7B31%7D%20%20%3D%20%20-%20i)
EXPLANATION
We want to evaluate
![{i}^{31}](https://tex.z-dn.net/?f=%20%7Bi%7D%5E%7B31%7D%20)
Use indices to rewrite the expression as:
![= {i}^{30} \times i](https://tex.z-dn.net/?f=%20%3D%20%20%7Bi%7D%5E%7B30%7D%20%20%5Ctimes%20i)
We know that
![{i}^{2} = - 1](https://tex.z-dn.net/?f=%20%7Bi%7D%5E%7B2%7D%20%20%3D%20%20-%201)
So we rewrite the expression to obtain;
![= ({ {i}^{2}) }^{15} \times i](https://tex.z-dn.net/?f=%20%3D%20%20%28%7B%20%7Bi%7D%5E%7B2%7D%29%20%7D%5E%7B15%7D%20%20%5Ctimes%20i)
This gives us;
![= {( - 1) }^{15} \times i](https://tex.z-dn.net/?f=%3D%20%20%20%7B%28%20-%201%29%20%7D%5E%7B15%7D%20%20%5Ctimes%20i)
This simplifies to
![= - 1 \times i](https://tex.z-dn.net/?f=%20%3D%20%20-%201%20%5Ctimes%20i)
![= - i](https://tex.z-dn.net/?f=%20%3D%20%20-%20i)
Answer:
true
Step-by-step explanation:
because the ratios are both 60 miles in 1 hour