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galben [10]
3 years ago
7

Suppose that you turn on the hot water, which flows at 8.7 liters per minute into the bathtub. Two minutes later you also turn o

n the cold water, which flows at 13.2 liters per minute. Let x be the number of minutes since you turned on the cold water.
A. Write expressions in terms of x for the number of minutes the hot water has been running, the number of liters the hot faucet has delivered, and the number of liters the cold faucet has deliv- ered.
B. Write an equation stating that the hot and cold faucets have de- livered the same number of liters. Solve the equation to find out when this happens.
C. The tub holds 100 liters. Will it have overflowed by the time the hot and cold faucets have delivered the same amounts? Justify your answer. ​
Mathematics
1 answer:
Katarina [22]3 years ago
7 0

Answer:

i really don't know the answer

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Find a third degree polynomial function of the lowest degree that has the zeros below and whose leading coefficient is one.
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Answer:

The polynomial function of the lowest degree that has zeroes at -1, 0 and 6 and with a leading coefficient of one is p(x) = x^{3}-5\cdot x^{2}-6\cdot x.

Step-by-step explanation:

From Fundamental Theorem of Algebra, we remember that the degree of the polynomials determine the number of roots within. Since we know three roots, then the factorized form of the polynomial function with the lowest degree is:

p(x) = (x-r_{1})\cdot (x-r_{2})\cdot (x-r_{3}) = 0 (1)

Where r_{1}, r_{2} and r_{3} are the roots of the polynomial.

If we know that r_{1} = -1, r_{2} = 0 and r_{3} = 6, then the polynomial function in factorized form is:

p(x) = (x+1)\cdot x \cdot (x-6) (2)

And by Algebra we get the standard form of the function:

p(x) = x\cdot (x+1)\cdot (x-6)

p(x) = x\cdot (x^{2}-5\cdot x -6)

p(x) = x^{3}-5\cdot x^{2}-6\cdot x (3)

The polynomial function of the lowest degree that has zeroes at -1, 0 and 6 and with a leading coefficient of one is p(x) = x^{3}-5\cdot x^{2}-6\cdot x.

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Answer:

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