He sold 8 and 4/20 boxes
he solde 8 and 1/5 boxes
he sold 8(20)+4 or 160+4 or 164 candy bars
Answer:
c
Step-by-step explanation:
Answer:
<h2>The equation represents an ellipse with an eccentricity of 0.7.</h2>
Step-by-step explanation:
The given equation is
![r=\frac{2.1}{1+0.7cos\theta}](https://tex.z-dn.net/?f=r%3D%5Cfrac%7B2.1%7D%7B1%2B0.7cos%5Ctheta%7D)
This equations represents a conic section in polar form, where the coefficient of the cosine function is the eccentricity of the conic section.
So, in this case, the eccentricity is
, which indicates that the equation belong to an ellipse, because the eccentricy of ellipses are between 0 and 1.
Therefore, the equation represents an ellipse with an eccentricity of 0.7.
If you move the negative on the left side of the second equation over to the right side, then we can see that the equation is equivalent to
![y={-2x} - 13](https://tex.z-dn.net/?f=y%3D%7B-2x%7D%20-%2013)
.
Remember that an equation
![y = mx + b](https://tex.z-dn.net/?f=y%20%3D%20mx%20%2B%20b)
represents a line with slope
![m](https://tex.z-dn.net/?f=m)
and y-intercept
![b](https://tex.z-dn.net/?f=b)
. Since both equations given have a slope of -2, but have different y-intercepts, they are
parallel.