Answer:
or 
Step-by-step explanation:

Explanation:
Since we have given that
There are 6 gray keys for every 11 black keys .
So, the ratio will be 6:11
Let the number of gray keys be 6x
Let the number of black keys be 11x
Now, according to question,

so,

Answer:
c.)
Step-by-step explanation:
i graphed it on my calculator
Right triangles. There is a 90 degree angle on both
Answer:
2/66 is ur answer
Step-by-step explanation:
because it will give u ur answer