Using the figure below, what are the correct side lengths?
Please help

One positive number is 9 more than twice another. if their product is 95, find the numbers

Could someone me with this question i’ve been stuck on it for 20 minutes

Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]