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ivanzaharov [21]
3 years ago
7

Prove that (x^5)-(x^2)+2x +3=0 has at least one real root.

Mathematics
2 answers:
Archy [21]3 years ago
8 0

Answer:

ok no cap

Step-by-step explanation:

lutik1710 [3]3 years ago
7 0
The first one is of order 5, so it has either 1, 3 or 5 real roots (unless any coefficent was complex). Proof complete :)
The other one, if it has a solution, it must be in [-1;1]. Because it only gives positive results the solution is further restricted to [0;1]. Because the cosine function is continuous and strictly decreasing on this interval, the difference of x and it's cosine will shrink up to some point within the interval where it gets to 0 (the solution) and then flips sign (the cosine gets less than the number), further decreasing until the end of the interval.
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What are the steps to get 1/7
madreJ [45]

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8 0
3 years ago
Solve with elimination
Fittoniya [83]
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4 0
4 years ago
Find one counter example to show that the conjecture is false. angle 1 and angle 2 are​ supplementary, so one of the angles is a
Mrac [35]

Answer:

B. m ∠ 1 = 90° and m ∠ 2 = 90°

Step-by-step explanation:

For most situations, the conjecture would probably be true, but there is one exception that makes this statement false.

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For an angle to be acute it needs to be lesser than 90°, and for a pair of angles to be supplementary they should add up to exactly 180°.

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4 0
4 years ago
Multiply 4/5 by the reciprocal of −2/10.
Svetach [21]

Answer:

4/5*reciprocal of -2/10

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4/5*10/2

Cancelling the numbers

-4 is the answer

Step-by-step explanation:

I hope it will help you :)

7 0
4 years ago
Read 2 more answers
From the information​ given, what is the biggest flaw in the​ study? A health researcher randomly selected 500 high school stude
Black_prince [1.1K]

Answer:

The correct answer is - The setting may discourage honest responses.

Step-by-step explanation:

In this particular setting of research and interview regarding this research may not produce hones results as the question is too direct to ask students if they had ever used drugs.

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Thus, the correct answer is : The setting may discourage honest responses.

5 0
3 years ago
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