Answer:
2 5/8 to 1.
Step-by-step explanation:
That would be 1 3/4 divided by 2/3.
= 7/4 / 2/3
= 7/4 * 3/2
= 21 / 8
= 2 5/8
Answer 2 5/8 to 1.
Fret seems like the best option.
They are going up by 2.15
The square of a binomial expands as follows:
![(a+b)^2=a^2+2ab+b^2](https://tex.z-dn.net/?f=%28a%2Bb%29%5E2%3Da%5E2%2B2ab%2Bb%5E2)
Expanding all the binomials, we have
![4k^2-36k+81+k^2+4k+4=4k^2+4k+1+k^2-16k+64](https://tex.z-dn.net/?f=4k%5E2-36k%2B81%2Bk%5E2%2B4k%2B4%3D4k%5E2%2B4k%2B1%2Bk%5E2-16k%2B64)
Sum like terms:
![5k^2-32k+85=5k^2-12k+65](https://tex.z-dn.net/?f=5k%5E2-32k%2B85%3D5k%5E2-12k%2B65)
Simplify terms appearing on both sides:
![-32k+85=-12k+65](https://tex.z-dn.net/?f=-32k%2B85%3D-12k%2B65)
Move all terms involving k to the left and all numbers to the right:
![-20k=-20](https://tex.z-dn.net/?f=-20k%3D-20)
Divide both sides by -20:
![k=1](https://tex.z-dn.net/?f=k%3D1)