Urgent please!

Make ‘y’ the subject of the formula

w = x^2 - 2yz

y = x² - w / 2z (D)

Step-by-step explanation:

w = x² - 2yz

w - x² = - 2yz

multiply both sides by -1

-1(w - x²) = -1 (-2yz)

-w + x² = 2yz

x² - w = 2yz

2yz = x² - w

divide both sides by 2z

y = x² - w / 2z

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.