Answer:
In the equation, it divides 21 by x before knowing what x is, and gets it incorrect. Instead, you need to divide 21 by -4.2.
Step-by-step explanation:
-4.2x = 21
-------------
-4.2
x = -5
Answer:
102°
Step-by-step explanation:
As the vertically opposite angles are equal,
![5x+2={3(x+14)](https://tex.z-dn.net/?f=5x%2B2%3D%7B3%28x%2B14%29)
Now let's solve for x now
![5x+2=3(x+14)\\](https://tex.z-dn.net/?f=5x%2B2%3D3%28x%2B14%29%5C%5C)
![5x+2=3x+42](https://tex.z-dn.net/?f=5x%2B2%3D3x%2B42)
![5x-3x=42-2](https://tex.z-dn.net/?f=5x-3x%3D42-2)
![2x=40](https://tex.z-dn.net/?f=2x%3D40)
![\frac{2x}{2} =\frac{40}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B2x%7D%7B2%7D%20%3D%5Cfrac%7B40%7D%7B2%7D)
![x=20 \\](https://tex.z-dn.net/?f=x%3D20%20%5C%5C)
Now let's find the value of KNL
![3(x+14)\\3(20+14)\\3*34\\102](https://tex.z-dn.net/?f=3%28x%2B14%29%5C%5C3%2820%2B14%29%5C%5C3%2A34%5C%5C102)
Hope this helps you.
Let me know if you have any other questions ;-)
I found the awnser by doing 10x10x2 witch equals 200. Then i know that 10x9 equals 90 so, you would get 29 dimes.