if the order mattered it would be 7*6*5 *4*3 = 2520 arrangements
if order didn't matter
7*6*5*4*3*2 divided by (5*4*3*2*2) = 21
Answer: X = 4.5
Step-by-step explanation:
The proportion is 8/9 for the lines. All we have to do is divide 4 by 8/9 to find the exact value of X.
4/(8/9) = 4.5
I hope this helps!
19 divided by 27 is about 0.7, or 0.704 if you need a really exact answer.