The height in feet (h) of the ball t seconds after it is released can be modeled by: -16t^2+10t+6=h. Find the time in seconds (t) passed before the ball hits the ground (let h=0)

1

Step-by-step explanation:

Method 1: Graph, then look at positive zero because time cannot be negative.

Method 2: You just want to find time when the height is zero, so if you set h at zero, you find it is a quadratic; from there you can factor, graph, or use the quadratic formula to solve.

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.

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21

-7 + ? = 21

-7 + 28 = 21

hope it