A company estimates its total profit (profit = total revenue minus total cost) as P(x) = 2x5 − 3x4 − 5x2 − 2, where P is in thousands of dollars and x is the number of years elapsed since the company was founded.Solve for the number of times the total profit become exactly zero. Hint: Use Descartes's rule of signs.

Answers

Answer 1

Answer: Using the Descartes` rule of signs, we have to recognize how many times the signs change from positive to negative, or from negative to positive from one term to the next. There is only 1 change of signs: from +2 x5 to -3 x4. So we have only 1 real zero.
Answer: There is only one time that the total profit become exactly zero.

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Answers

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Which of the following marine animals are endothermic? a. whales b. mackerels c. marine iguanas d. sea gulls

Answers

Answer:

It should be whales :)

Explanation:

The energy value listed for foods refers to the _______.a. total amount of chemical energy in the food
b. amount of energy available as fuel for the body
c. total nutritional value of the food
d. amount of carbohydrates

Answers

The energy value listed for foods refers to the amount of energy available as fuel for the body.

The answer is option B.

What is the energy value of food?

The energy value of foods is usually determined using an instrument called a bomb calorimeter. It consists of a heavy steel bomb, with a platinum or gold-plated copper lining and a cover held tightly in place by means of a strong screw collar.

The net energy value of a feed is its actual nutritive effect, in the sense that it represents the total energy content minus all loss and expense of utilization.

The energy value of digestible carbohydrates is generally accepted as 4 kcal/g for both sugars and starches.

Learn more about energy value here:-brainly.com/question/13881533

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Answer:

b. amount of energy avaiable as fuel

Explanation:

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If two organisms belong to the same phylum, they both must also belong to which of the followingGenus
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Kingdom
Order

Answers

If two organisms belong to the same phylum, they both must also belong to the same kingdom. This is the correct answer given that it is the only option which is less narrow than phylum. The other options are wider, and if two organisms belong to the same phylum, they don't necessarily belong to the same genus, class, or order.Hope this helps. Let me know if you need additional help!

Answer:

Kingdom

Explanation:

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Answers

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Answers

Answer:

Insulin is secreted by the pancreas which regulates the blood glucose level in the blood. Insulin generally reduces the blood glucose level by depositing the glucose in the liver and muscles as glycogen.

In diabetic people, enough insulin is not produced by the pancreas as a result glucose level increases in the blood which is called hyperglycemia. So in this condition, insulin injection is given from outside to increase the level of insulin in the blood.

Then this increased level of insulin helps in reducing the extra amount of insulin from the blood by accumulation it on the liver. Therefore insulin play a role in reducing the extra amount of free glucose from the blood.

It has the same affect as insulin that the body produces. It reacts with glucagon (I think. It is that or gycogen) to create glucose

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