Saturday

August 30, 2014

August 30, 2014

Posted by **Anonymous** on Sunday, February 21, 2010 at 8:00am.

b) the total number of bricks in the wall

- maths -
**Anonymous**, Sunday, February 21, 2010 at 9:35ami need to know how to do this one please

- maths -
**Reiny**, Sunday, February 21, 2010 at 9:51amlet a = 4

we know d = 2

S_{m}= m/2[8 + (m-1)(2)]

21m + 40 = m[3+m]

take over, (I got m=20)

Once you have m, sub into 21m+40 for the sum.

- maths -
**Anonymous**, Sunday, February 21, 2010 at 10:13amthx alot

**Related Questions**

math - thomas wants to build a seven layer brick wall. the bottom layer has 20 ...

Math - You plan to construct a brick wall measuring 4.5 m in length, 1.2 m high...

maths - A wall 24m long, 0.4m thick and 6m high is constructed with the bricks ...

Math - Mike bought 252 bricks to build a wall in his yard. Each row has 14 ...

math - A brick wall measuring 3 ft by 11 ft is to be built. The brick measures ...

Math - Julia wants to build another garden wall, 10 bricks long and 3 bricks ...

Math-- - A brick layer is hired to build three walls of equal length. He has ...

math - A brick wall is constructed with 20 rows of bricks. If the height of a ...

Math - If 600 bricks measuring 12" by 18" are required to build a wall 10 ft. ...

math - A brick wall measuring 3 ft by 11 ft is to be built. The brick measures ...