A normal distribution is a fundamental tool in statistics which ends up being applied to nearly all elds where mathematics is used. The equation for the "probability density function" is a function that tells how the probability is distributed for di erent values of x. Areas under the normal distribution give the probabilities of landing at x value in the width of the region given, and so the area underneath the entire function (from 1 to 1) is 1. The equation for a particular normal distribution is N(x) = r 2 e(x2)2 Find the center of mass on the x-axis of the region de ned as the region bounded by x = a, x = b, N(x), and the x-axis if you know that the regions area is A. (This should be in terms of a, b, and A)

faster, im not sure why but i know it is faster

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.