Answer: 0.567
Step-by-step explanation:

Answer:
1/2x-5=13
Step-by-step explanation:
Let x= Frankie’s mother’s age
Half his mother’s age= 1/2x
5 less than that=1/2x-5
We know that Frankie is 13 so that equation is equal to Frankie’s age, which is 13.
Hope this helps.
This will be your formula:

cross multiply (32 times x) (120 times 800)
this is what you'll get:
8 feet 4 inches is more precise and easier to use.
It would be weird to say 7 feet 16 inches, because there's 12 inches in a foot and your already using that measurement.
Hope this is helpful:)