document.write( "Question 335383: I have a triangle of dots progressing in size. The first triangle has one dot, the second triangle has three dots, the third triangle has nine dots, ect. I need help with the formula when it asks how many dots the \"nth\" triangle has. \n" ); document.write( "

Algebra.Com's Answer #240389 by Edwin McCravy(20056) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Triangle 1, the first triangle, has 1 =  dots\r\n" );
document.write( "Triangle 2, the second triangle, has 3 =  dots\r\n" );
document.write( "Triangle 3, the third triangle, has 9 =  dots\r\n" );
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document.write( "So it looks like the exponent of 3 in the number of dots\r\n" );
document.write( "is 1 less than the triangle number, so\r\n" );
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document.write( "Triangle n, the nth triangle, has  dots.\r\n" );
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document.write( "Edwin

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