Then
2x = 3.6
x = 3.6 / 2
x = 1.8
answer is B. 1.8
The x-intercept for that equation would be -8/3.
The y-intercept for that equation would be 9.
HOPE THIS HELPS YOU! ^_^
Answer:
a. ![r=1+2\cos(\theta)](https://tex.z-dn.net/?f=r%3D1%2B2%5Ccos%28%5Ctheta%29)
Step-by-step explanation:
The curve
![r=1+2\cos(\theta)](https://tex.z-dn.net/?f=r%3D1%2B2%5Ccos%28%5Ctheta%29)
is not a conic.
Convert to rectangular coordinates.
First multiply through by r.
![r^2=r+2r\cos(\theta)](https://tex.z-dn.net/?f=r%5E2%3Dr%2B2r%5Ccos%28%5Ctheta%29)
Substitute ![r^2=x^2+y^2](https://tex.z-dn.net/?f=r%5E2%3Dx%5E2%2By%5E2)
and
![x=r\cos(\theta)](https://tex.z-dn.net/?f=x%3Dr%5Ccos%28%5Ctheta%29)
![x^2+y^2=\sqrt{x^2+y^2}+2x](https://tex.z-dn.net/?f=x%5E2%2By%5E2%3D%5Csqrt%7Bx%5E2%2By%5E2%7D%2B2x)
We can see clearly that this is not a conic.
is an equation of a cardioid.
is a circle.
is a parabola.
is an ellipse.
Answer:
Siham ran for 305 minutes
Step-by-step explanation:
Let
Siham Ran for time = X
Siham Ran for time = X-60
According to given condition
X + (X-60) = 670
X + X - 60 = 670
2X = 670-60
2X = 610
X = 610/2
X = 305
So Siham ran for 305 minutes only