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3 years ago

Use the x-intercept method to find all real solutions of the equation. x^3-9x^2+11x+21=0

Mathematics

1 answer:

IgorLugansk [536]3 years ago

7 0

We must graph y=x^3-9x^2+11x+21. Please, see the attached file.
Then we see were the graph cuts the x-axis, and these values of x are the real solutions of the given equation:

The real solutions of the given equation are:x = -1, 3, and 7

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Answer:

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3 years ago

Northwest Molded molds plastic handles with a variable cost of $1.00 per handle. The fixed cost to run the molding machine is $2

ASHA 777 [7]

Answer:

To break even it must be molded 1280 handles weekly.

The profit if 1500 handles are produced and sold is $440

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To break even, the amount of total cost must be the same as the amount of revenues.

Total Cost is Fixed cost plus unitary variable cost multiplied by the produce quantity.

Total cost= FC + vc*Q

Where

FC=Fixed cost

vc=unitary variable cos

Q=produce quantity

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Isolating Q

FC=(Price * Q)-(vc*Q)

FC=(Price-vc) * Q

Q= FC/(Price-vc)

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3 years ago

Calculate the perimeter of the regular hexagon which has 8 sides <br><br> Pls help I’m stuck

snow_lady [41]

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3 years ago

The probability that Latisha orders french fries at lunch is .32 and the probability that she orders a grilled cheese and fries

EastWind [94]

There is a typo error in the last part of the question. The corrected part is-

"If the probability that she orders just a grilled cheese sandwich is .76, what is the probability that she will order a grilled cheese or fries?"

Answer:

The probability that she will order a grilled cheese sandwich or fries is <u>0.43.</u>

Step-by-step explanation:

Given:

Probability of ordering fries is, $P(F)=0.32$