Arepresentative from each of seven nations is to sit at a round table to discuss trade relations. how many ways can the representatives be seated?

The number of ways the representative can be seated are:

720

Step-by-step explanation:

We know that when 'n' people are to be seated around a round table than the number of ways of doing so is calculated by:

                                                (n-1)!

Since in a circular seating there is no condition of the end point and hence the arrangement may start from anywhere.

Here we are given 7 nations who are to be seated at a round table.

Hence, the number of ways of doing so is:

          Hence, the number of ways to do so is:

                         720

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles

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.