Consolidate (group together) the s terms and then do the same thing to the constant terms:
-2s - (3/4)s = 13 - 2
11
Then (-2 3/4)s = 11, and s = ---------------- = -4 (answer)
-11/4
So the hypotenuse is the ladder's length, which is 6m, and the base of the 'triangle' is 1.5m. Therefore, you do 6^2 - 1.5^2 = 36 - 2.25 = 33.75. Then, you just square root it to get 5.80948m. Hope this helps!
Cool but is their a question you need help with?
You make fractions and do cross multiplication. so (5/4)*(40/x)= x=32. so 32 rock songs.