If it takes 4 men 6 hours to repair a road, how long will it take 3 men to do the job if they work at the same rate ? a) 5 hours b) 6 hours c) 8 hours d) 9 hours

step 1 : 4men = 6 hrs

3 men =  ?

step 2 : 4 times 6 = 24

step 3 : 24 divided by 3 = 8

ANSWER: 8 hours (c)

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.

the answer is mp

step-by-step explanation: