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#1 2010-10-24 08:50:16
- imauspilot
- Member
- Registered: 2010-10-24
- Posts: 2
Finding the sides of an equilateral triangle.
Hello I need help sovling this problem so I can help my daughter in her math class. I have not done this type of math in 20 plus years. Thank you.
Problem: One side of an equilateral triangle increased by 15 is 29 less than three times another side. If the sides are measured in inches, what are the measures of the three sides of the triangle?
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#2 2010-10-24 09:34:03
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Finding the sides of an equilateral triangle.
Hi imauspilot;
Call one sid x. Since it is equilateral all three sides are x. Form the equation
x + 15 = 3x - 29 Subtract x from both sides.
15 = 2x - 29 Add 29 to both sides.
44 = 2x Divide both sides by 2.
x = 22.
The sides of the triangle are 22,22,22.
Welcome to the forum.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3 2010-10-25 17:24:13
- imauspilot
- Member
- Registered: 2010-10-24
- Posts: 2
Re: Finding the sides of an equilateral triangle.
Thanks for the help.
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#4 2010-10-25 20:48:37
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: Finding the sides of an equilateral triangle.
Hi imauspilot;
Glad to help.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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