document.write( "Question 824176: I need more detail solution:\r
\n" ); document.write( "\n" ); document.write( "A child has a bag full of little toy bricks each of dimensions 1cm x 1 cm x
\n" ); document.write( "1cm and decides to build a little wall with them. He wants to have 2 bricks in the top
\n" ); document.write( "row, 4 in the second row from the top, 6 in the third row from the top, and so on,
\n" ); document.write( "always placing two more bricks in every row below. If he has a total of 950 little
\n" ); document.write( "bricks, how tall can he make his wall?
\n" ); document.write( "

Algebra.Com's Answer #496242 by MathTherapy(10555)\"\" \"About 
You can put this solution on YOUR website!
I need more detail solution:\r
\n" ); document.write( "\n" ); document.write( "A child has a bag full of little toy bricks each of dimensions 1cm x 1 cm x
\n" ); document.write( "1cm and decides to build a little wall with them. He wants to have 2 bricks in the top
\n" ); document.write( "row, 4 in the second row from the top, 6 in the third row from the top, and so on,
\n" ); document.write( "always placing two more bricks in every row below. If he has a total of 950 little
\n" ); document.write( "bricks, how tall can he make his wall?
\n" ); document.write( "

\n" ); document.write( "This is an arithmetic progression, with formula: \"S%5Bn%5D+=+%28n%2F2%292a%5B1%5D+%2B+%28n+-+1%29d\".
\n" ); document.write( "Proceed to determine n, or number of rows, with:
\n" ); document.write( "\"S%5Bn%5D\" being the sum of the AP, or 950
\n" ); document.write( "\"a%5B1%5D\" being the 1st term, or 2
\n" ); document.write( "d being the common difference, or 2\r
\n" ); document.write( "\n" ); document.write( "Plugging the variables into the formula should result in the quadratic equation: \"n%5E2+%2B+n+-+950+=+0\"
\n" ); document.write( "This results in n, or number of rows being 30.822 ≈ 30\r
\n" ); document.write( "\n" ); document.write( "Since each brick is 1 cm high, then height of wall = 30 * 1, or \"highlight_green%2830%29\" cm
\n" ); document.write( "You can do the check!! \r
\n" ); document.write( "\n" ); document.write( "Send comments, “thank-yous,” and inquiries to “D” at MathMadEzy@aol.com.
\n" ); document.write( "Further help is available, online or in-person,for a fee, obviously. \r
\n" ); document.write( "\n" ); document.write( "For FREE info and answers to questions about the ASVAB exam, the NYS 3 – 8 city/state wide exams,
\n" ); document.write( "GENERAL MATH QUESTIONS, MATH HOMEWORK QUESTIONS, or MATH QUESTIONS related to the Regents Integrated Algebra,
\n" ); document.write( "Regents Geometry, Regents Algebra 2/Trigonometry, SHSAT, COOP/HSPT/TACHS, PSAT, SAT, ACT, SSAT/ISEE, GRE, CLEP,
\n" ); document.write( "and the GED, you can visit: http://asvabstudyzone.freeforums.net/. \n" ); document.write( "
\n" );