Let the total ribbon Zoe had was x feet.
Out of x feet, she used 3/8 part of it.
Hence, 
3/8 part of the original ribbon is equal to 9 feet.
Hence, we get

=> Multiply 8 on both sides.

Divide both sides by 3


Zoe had 24 feet of ribbon in starting... Answer
Answer:
undefined, stays on x so straight vertical - vertical line is undef slope
If you look at the picture, you set it up as part over whole is equal to percent over 100. then you just multiply across.
At the standard 0.05 value, this is not significant, however at a 0.01 level, it would be significant
Answer:
8
Step-by-step explanation:
using
a= 6 c=10