Water is draining out of a 800-gallon hot tub. The water is draining at a rate of 20 gallons per minute. At timet=0 minutes, the tub starts draining. Use the values in this problem to complete
the inequality to represent the time [t] when the volume of water in the tub is less than or equal to
640 gallons.

sin3a=12/15

step-by-step explanation:

since one side was multiplied by 3 the other side must also be multiplied by 3.

answerthe vertex form

step-by-step explanation:

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.

l.jnl.j/n.m,lm,

step-by-step explanation: