Atap leaks at a rate
of 2cm/s, how long
will it take to fill a container
of 45,000 m3

22500 secs

or

375 mins

or

6 hours and 15 min

Step-by-step explanation:

do 45000 m3 divided by 2 cm/s

then you get 22500 secs which if you divide by 60 gets 375 min and if you divide the mins by 60 you get 6 hours and 15 mins left

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.