A homeowner wants several small dormers built on his roof to admit light. They will be in the shape of isosceles triangles whose sides will exceed their base by 5 inches. If the perimeter is 100 inches, what are the lengths of the three sides? The base is___, and the equal sides are____.
@mayankdevnani
oh so simple
in isosceles triangle two sides are equal
a+B+C
i got that i did it and for some reason my answers were wrong
so x+x+5=100 2x=95 x=95/2=47.5
so three sides are 47.5,47.5 and 5 inches
that's not the answer
@Claire4christ its right answer
the answer is not 47
two equal sides, and both exceed the base by 5 base is x side is x + 5 perimeter is x + (x+5) + (x +5) = 100 3x +10 = 100 3x = 90 x = 30 base = 30, sides = 35
i got the same and 35 wasnt right
oh!! i got it
@JakeV8 you are right
so, base = 30, sides = 35 is right? When the problem says the sides exceed the base by 5, that is a little vague and open to different interpretations.
glad to help... :)
your just forgat to put inches
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