Answer:
x = 0.954
Step-by-step explanation:
We apply pythagorean to find x
(4-x)² = 1.2² + 2.8²
(4-x)² = 9.28
✓(4-x)² = ✓(9.28)²
4 - x = 3.046
- x = 3.046 - 4
- x = -0.954
x = 0.954
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Just because 2 things are related doesn't mean they will both be changed when one thing happens. For example steak and candy, just because they are both food doesn't mean they taste the same or interact with each other.
Answer:
The answer is option 4.
Step-by-step explanation:
You have to use Indices Law,
![{a}^{m} \times {a}^{n} = {a}^{m + n}](https://tex.z-dn.net/?f=%20%7Ba%7D%5E%7Bm%7D%20%20%5Ctimes%20%20%7Ba%7D%5E%7Bn%7D%20%20%3D%20%20%7Ba%7D%5E%7Bm%20%2B%20n%7D%20)
![{a}^{ - n} = \frac{1}{ {a}^{n} }](https://tex.z-dn.net/?f=%20%7Ba%7D%5E%7B%20-%20n%7D%20%20%3D%20%20%5Cfrac%7B1%7D%7B%20%7Ba%7D%5E%7Bn%7D%20%7D%20)
So for this question :
![{2}^{ - 4} \times {2}^{2}](https://tex.z-dn.net/?f=%20%7B2%7D%5E%7B%20-%204%7D%20%20%5Ctimes%20%20%7B2%7D%5E%7B2%7D%20)
![= {2}^{ - 4 + 2}](https://tex.z-dn.net/?f=%20%3D%20%20%7B2%7D%5E%7B%20-%204%20%2B%202%7D%20)
![= {2}^{ - 2}](https://tex.z-dn.net/?f=%20%3D%20%20%7B2%7D%5E%7B%20-%202%7D%20)
![{a}^{b} = c \\ c = {2}^{ - 2}](https://tex.z-dn.net/?f=%20%7Ba%7D%5E%7Bb%7D%20%20%3D%20c%20%5C%5C%20c%20%3D%20%20%7B2%7D%5E%7B%20-%202%7D%20)
![c = \frac{1}{ {2}^{2} }](https://tex.z-dn.net/?f=c%20%3D%20%20%5Cfrac%7B1%7D%7B%20%7B2%7D%5E%7B2%7D%20%7D%20)
![c = \frac{1}{4}](https://tex.z-dn.net/?f=c%20%3D%20%20%5Cfrac%7B1%7D%7B4%7D%20)