Ireally need , so if any of you can plz me it would be greatly appreciated

Any straight line will have the measure of its angle as 180°. In the picture, ∠AED is that. So all the pieces of that angle must add up to 180 as well.

There are three smaller angles that make up that line, one that is 57°, one that is 33°, and our third piece. All three add up to 180, so,

57 + 33 + third piece = 180

90 + third piece = 180

third piece = 90

That third piece is ∠BEC, which is 90°. Any angle measuring 90° is a right angle.

So ∠BEC is a right angle.

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

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.