If you make the denominators similar, you get
6/8 and 7/8
6/8 is smaller, so no, 3/4 isn't bigger than 7/8
Find the first five terms to this arithmetic sequence. f(1)=2, common difference, d=3
Let S, M, L represent the shortest, mid-length, and longest sides, respectively. You are given three bits of information.
.. S +M +L = 14.5 cm
.. L = 2S
.. L = 6.2 cm
You can use an equation something like this to find the middle-length side.
.. (6.2 cm)/2 +M +6.2 cm = 14.5 cm
.. M +9.3 cm = 14.5 cm . . . . . . . . . . . . . constant terms collected
.. M = 5.2 cm . . . . . . . . . . . . . . . . . . . . . subtract 9.3 cm
Now, you know the side lengths are 3.1 cm, 5.2 cm, 6.2 cm.
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You have not offered any choices for "which equation," so take your pick of those used here.
