15 is 60% of 25. 15/25 is equal to .6 or 60%
(12+9x) - (6+3x) + 6x + -3
6+3x + 6x+-3
3+ 9x
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Answer: </em></h3><h3><em> I think the first answer is S(t) = 2^t - 1 .</em>
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X = 25.5 mm.
Using the similarity statement given, that ΔABC ~ ΔDEF, we set up a proportion:
8.5/x = 4/12
Cross multiply:
4*x = 8.5*12
4x = 102
Divide both sides by 4:
4x/4 = 102/4
x = 25.5
