Answer:
b
Step-by-step explanation:
it's the only one were you can multiply and get the first number and the second number a multiple of the ratio 9:5
If the mug costs $8 and Kendra got back $0.56 back for paying $9 than to find the tax rate you would divide $0.56 by $8 which would end up to be 0.07 percent as the tax rate.
Answer:
a67y.....................
![r=\dfrac5{1+\cos\theta}\implies r(1+\cos\theta)=5\implies r+r\cos\theta=5](https://tex.z-dn.net/?f=r%3D%5Cdfrac5%7B1%2B%5Ccos%5Ctheta%7D%5Cimplies%20r%281%2B%5Ccos%5Ctheta%29%3D5%5Cimplies%20r%2Br%5Ccos%5Ctheta%3D5)
In converting between polar and rectangular coordinates, we take
![x^2+y^2=r^2\implies r=\sqrt{x^2+y^2}](https://tex.z-dn.net/?f=x%5E2%2By%5E2%3Dr%5E2%5Cimplies%20r%3D%5Csqrt%7Bx%5E2%2By%5E2%7D)
![x=r\cos\theta](https://tex.z-dn.net/?f=x%3Dr%5Ccos%5Ctheta)
so that the equation becomes
![\sqrt{x^2+y^2}+x=5](https://tex.z-dn.net/?f=%5Csqrt%7Bx%5E2%2By%5E2%7D%2Bx%3D5)
which we can rewrite as
![\sqrt{x^2+y^2}=5-x](https://tex.z-dn.net/?f=%5Csqrt%7Bx%5E2%2By%5E2%7D%3D5-x)
![x^2+y^2=(5-x)^2](https://tex.z-dn.net/?f=x%5E2%2By%5E2%3D%285-x%29%5E2)
![x^2+y^2=25-10x+x^2](https://tex.z-dn.net/?f=x%5E2%2By%5E2%3D25-10x%2Bx%5E2)
![\implies\boxed{y^2=25-10x}](https://tex.z-dn.net/?f=%5Cimplies%5Cboxed%7By%5E2%3D25-10x%7D)
so the answer is C.
Answer:
It would be either -5/5 or -1