Answer:
Step-by-step explanation:
If the distance across the floor from one mark to the other is [15] inches then the [Pythagorean Theorem] says that because 12^2+9^2=[15]^2, a right triangle is formed.
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p=(4q-5)/2
p+4q=3p+5
3p-p=4q-5
2p=4q-5
Dividing both sides by 2