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algol13
3 years ago
7

Find the value of each variable x= y=

Mathematics
1 answer:
mamaluj [8]3 years ago
4 0
Can’t see it sorry jk the answer is x=567 y=766
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Which formula gives the x-coordinates of the maximum values for y = cos(x)?
REY [17]

Answer with explanation:

The given trigonometric Function is,

     y= cos x

→The maximum value of , cos x , is 1,  at x=0 degree.

Cos x =1

→Cos x = Cos (0)degree,

x=2 k \pi \pm 0

→ for, k= An Integer

x=2 k π→→General formula that  gives the x-coordinates of the maximum values for y = cos(x)

Ordered Pair =(x,y)=(2 k π, 1)

For, any value of , k in the given equation, y will be always 1.

3 0
4 years ago
Solve:<br><br> 2/7 + 1/3 <br><br> A:3/7 <br><br> B:3/21<br><br> C:13/21
dexar [7]
The correct answer is A
4 0
3 years ago
An experimenter flips a coin 100 times and gets 59 heads. Find the 98% confidence interval for the probability of flipping a hea
lara [203]

Answer:

The 98% confidence interval for the probability of flipping a head with this coin is (0.4756, 0.7044).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

An experimenter flips a coin 100 times and gets 59 heads.

This means that n = 100, \pi = \frac{59}{100} = 0.59

98% confidence level

So \alpha = 0.02, z is the value of Z that has a p-value of 1 - \frac{0.02}{2} = 0.99, so Z = 2.327.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.59 - 2.327\sqrt{\frac{0.59*0.41}{100}} = 0.4756

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.59 + 2.327\sqrt{\frac{0.59*0.41}{100}} = 0.7044

The 98% confidence interval for the probability of flipping a head with this coin is (0.4756, 0.7044).

5 0
3 years ago
Last year, Michelle earned $45,183.36 at a hair salon. What was her average monthly income? *
Lynna [10]
The answer should be 3765.28
7 0
3 years ago
Read 2 more answers
IV. Short Answer Type – I   ( any Eight) :                                      8 X 2 = 16
DIA [1.3K]

Step-by-step explanation:

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