Answer:
The answer is : 2/3
Step-by-step explanation:
2+9x^2=6
9x^2 = 6 - 2
9x^2 = 4
x^2 = 4/9
x = √(4/9)
x = 2/3
Step-by-step explanation:
You said the other one would be the last haha just kidding I'm glad to help.
16. ![\frac{k}{2}=(-5)^2](https://tex.z-dn.net/?f=%5Cfrac%7Bk%7D%7B2%7D%3D%28-5%29%5E2)
First, get rid of that parenthesis.
![\frac{k}{2}=25](https://tex.z-dn.net/?f=%5Cfrac%7Bk%7D%7B2%7D%3D25)
Now multiply both sides by 2 so that you can isolate k
![2(\frac{k}{2})=25*2](https://tex.z-dn.net/?f=2%28%5Cfrac%7Bk%7D%7B2%7D%29%3D25%2A2)
![k=50](https://tex.z-dn.net/?f=k%3D50)
19. ![\frac{r}{3}=\frac{121}{11}](https://tex.z-dn.net/?f=%5Cfrac%7Br%7D%7B3%7D%3D%5Cfrac%7B121%7D%7B11%7D)
This is a pretty easy one. If you didn't know, 121/11 is actually 11 :)
![\frac{r}{3}=11](https://tex.z-dn.net/?f=%5Cfrac%7Br%7D%7B3%7D%3D11)
Simply multiply by 3 to isolate r :)
![3(\frac{r}{3})=11*3](https://tex.z-dn.net/?f=3%28%5Cfrac%7Br%7D%7B3%7D%29%3D11%2A3)
![r=33](https://tex.z-dn.net/?f=r%3D33)
we are given two points as
(3, 16) and (5, 10)
firstly , we will find slope
slope is m
so, we can use formula
![m=\frac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=%20m%3D%5Cfrac%7By_2-y_1%7D%7Bx_2-x_1%7D%20%20)
now, we can plug points
![m=\frac{10-16}{5-3}](https://tex.z-dn.net/?f=%20m%3D%5Cfrac%7B10-16%7D%7B5-3%7D%20%20)
![m=\frac{-6}{2}](https://tex.z-dn.net/?f=%20m%3D%5Cfrac%7B-6%7D%7B2%7D%20%20)
![m=-3](https://tex.z-dn.net/?f=%20m%3D-3%20%20)
we can plug it in y=mx+b
we get
![y=-3x+b](https://tex.z-dn.net/?f=%20y%3D-3x%2Bb%20)
now, we can select any one points
and find b
(3,16)
x=3 and y=16
![16=-3*3+b](https://tex.z-dn.net/?f=%2016%3D-3%2A3%2Bb%20)
we can find b
![b=25](https://tex.z-dn.net/?f=%20b%3D25%20)
now, we can plug back b
and we get
![y=-3x+25](https://tex.z-dn.net/?f=%20y%3D-3x%2B25%20)
so, equation is
![y=-3x+25](https://tex.z-dn.net/?f=%20y%3D-3x%2B25%20)
and
...............Answer
Answer:
N= 8
Step-by-step explanation:
A I think but I’m not postitive