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pshichka [43]
3 years ago
15

What is/are the exact solutions for the equation 2cos^2x+3cosx+1=0 on the intercal (0,2pi)

Mathematics
1 answer:
Dafna1 [17]3 years ago
5 0

Answer:

x = \frac{2\pi }{3}  and \frac{4\pi }{3}

Step-by-step explanation:

I graphed the equation below.

If these answers are correct, please make me Brainliest!

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Answer:

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3 years ago
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3 years ago
Major league baseball salaries averaged $3.26 million with a standard deviation of $1.2 million in a recent year. suppose a samp
Anastaziya [24]
Given:
μ = $3.26 million, averaged salary
σ = $1.2 million, standard deviation
n = 100, sample size.

Let x = random test value
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z = (x - μ)/ (σ/√n) = (4 - 3.26)/(1.2/10) = 6.1667

From standard tables,
P(z<6.1667) = 1
The area under the distribution curve = 1.
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Answer: The probability is 0.

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s2008m [1.1K]
That is a perpendicular bisector
4 0
3 years ago
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Ne4ueva [31]

Answer: 0

Step-by-step explanation:

the answer is 0

5 0
3 years ago
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