The vertices of a quadrilateral in the coordinate plane are known. how can the perimeter of the figure be found?
1)use the distance formula to find the length of each side, and then add the lengths.
2)use the slope formula to find the slope of each of side, and then determine if the opposite sides are parallel.
3)use the slope formula to find the slope of each of side, and then determine if the consecutive sides are perpendicular.
4)use the distance formula to find the length of the sides, and then multiply two of the side lengths.

a. is correct

47 - 90 = 43

43 - 180 = x

x = 137

1 1/7 hope i

step-by-step explanation:

8/7 = (1 * 7 + 1) / 7 = 1 + 1/7 = 1 1/7

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.