Answer:
y=3x.........1
y=x^2-10.......2
substituting value of eq 1 to 2
3x=x^2-10
x^2-10-3x=0
x^2-3x-10=0
x^2-5x+2x-10=0
X(x-5)+2(x-5)=0
(x-5)(X+2)=0
then
X=5 or X=-2
again
y=??
when X=5
y=3×5=15
when X=-2
y=-6
It would be 750 dollars because you take 500 times .15 and get 750
I think it’s 3 over 7 I am rlly not sure if that’s right I just based it off the pattern
Answer:
12 meters
Step-by-step explanation:
Given
![Scale= 1cm:2m](https://tex.z-dn.net/?f=Scale%3D%201cm%3A2m)
Required
Determine the measurement when the scale reads 6cm
Represent this scale with x;
Such that:
![Scale = 6cm:x](https://tex.z-dn.net/?f=Scale%20%3D%206cm%3Ax)
Equate
and ![Scale = 6cm:x](https://tex.z-dn.net/?f=Scale%20%3D%206cm%3Ax)
![1cm:2m = 6cm:x](https://tex.z-dn.net/?f=1cm%3A2m%20%3D%206cm%3Ax)
Express as fraction
![\frac{1cm}{2m} = \frac{6cm}{x}](https://tex.z-dn.net/?f=%5Cfrac%7B1cm%7D%7B2m%7D%20%3D%20%5Cfrac%7B6cm%7D%7Bx%7D)
Cross Multiply
![x * 1cm = 6cm * 2m](https://tex.z-dn.net/?f=x%20%2A%201cm%20%3D%206cm%20%2A%202m)
![x * 1 = 6 * 2m](https://tex.z-dn.net/?f=x%20%2A%201%20%3D%206%20%2A%202m)
![x = 6 * 2m](https://tex.z-dn.net/?f=x%20%3D%206%20%2A%202m)
![x = 12m](https://tex.z-dn.net/?f=x%20%3D%2012m)
We need a picture of the lines