Water is being drained out of a swimming pool at a constant rate of 780 gallons per hour. the swimming pool initially contained 45,000 gallons of water. a chemical additives must be added to the pool when it has no more than 15,000 gallons of water remaining in the pool. write an expression for the amount of water remaining in the pool after blank amount of hours.

W = 45000 - 780h

Step-by-step explanation:

There were 45000 gallons of water in the swimming pool initially.

Given that at a constant rate i.e. 780 gallons of water per hour is being drained out of the swimming pool.

When the pool has no more than 15,000 gallons of water remaining a chemical additive must be added with water.

Therefore, the equation that gives the remaining water after h hours in the pool is  

W = 45000 - 780h (Answer)

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

the solution is x=1

step-by-step explanation:

we are given our   equation as

let's assume

left side function is

right side function is

now, we can draw graph

and then we can get intersection point

the intersection point will be solution

so, the solution is

x=1