It takes 36 minutes for 7 people to paint 4 walls. How many minutes dose it take for 9 people to paint 7 walls?
1 answer:
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Answer:
Step-by-step explanation:
<u>Equation of a Polynomial</u>
Given the roots x1, x2, and x3 of a cubic polynomial, the equation can be written as:
Where a is the leading coefficient.
We know the three roots of the polynomial -6, -3, and 1, thus:
Since the y-intercept of the polynomial is y=90 when x=0:
90=a(0+6)(0+3)(0-1)
90=a(6)(3)(-1)=-18a
Thus
a = 90/(-18) = -5
The polynomial is:
We must write it in standard form, so we have to multiply all of the factors as follows:
Answer:
Step-by-step explanation:
Given the equation
Note that
and
Combined,
Solve the equation:
Since this is the solution to the equation.
