Answer:
Hello from MrBillDoesMath!
Answer:
p = 12
Discussion:
Assume we have a right trainload (looks like it but no angle indication given). By the Pythagorean Theorem
p^2 + 5^2 = (p+1) ^ 2 =>
p^2 + 25 = p^2 + 2p + 1 =>
25 = 2p + 1 => (subtract p^2 from both sides)
25 -1 = 2p => (subtract 1 from both sides)
24 = 2p =>
p = 24/2 = 12 => (divide both sides by 2)
Regards,
MrB
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