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asambeis [7]
2 years ago
10

Can you answer problem 11?

Mathematics
1 answer:
In-s [12.5K]2 years ago
7 0

Answer:

well you didn't show problem 11 but here is a pretty photo of Port orford Oregon

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Use the graph of y=sin2θ to find the value of sin 2θ for θ= pi/4 radians
aivan3 [116]
The graph of sin function is a curve as shown below:

Now, Sin 2Ф , where Ф = \frac{ \pi } {4}

or sin 2Ф = 2 × \frac{ \pi } {4} 

or sin 2Ф = \frac{ \pi } {2} 

Ans, sin π/2 = sin 180/2 = sin 90 = 1

Thus, the curve has maximum at 90. 

4 0
3 years ago
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An author argued that more basketball players have birthdates in the months immediately following July​ 31, because that was the
Lady_Fox [76]

Answer:

There is sufficient evidence to warrant rejection of the claim that professional basketball players are born in different months with the same​ frequency.

Step-by-step explanation:

In this case we need to test whether there is sufficient evidence to warrant rejection of the claim that professional basketball players are born in different months with the same​ frequency.

A Chi-square test for goodness of fit will be used in this case.

The hypothesis can be defined as:

<em>H₀</em>: The observed frequencies are same as the expected frequencies.

<em>Hₐ</em>: The observed frequencies are not same as the expected frequencies.

The test statistic is given as follows:

 \chi^{2}=\sum{\frac{(O-E)^{2}}{E}}

The values are computed in the table.

The test statistic value is \chi^{2}=128.12.

The degrees of freedom of the test is:

n - 1 = 12 - 1 = 11

Compute the <em>p</em>-value of the test as follows:

p-value < 0.00001

*Use a Chi-square table.

p-value < 0.00001 < α = 0.05.

So, the null hypothesis will be rejected at any significance level.

Thus, there is sufficient evidence to warrant rejection of the claim that professional basketball players are born in different months with the same​ frequency.

6 0
3 years ago
What is the mad of 5,7.50,8.25,8,9.75,10.25,11,10.75<br><br> A 13<br> B 8.81<br> C 6<br> D 1.63
Molodets [167]

Answer:

B

Step-by-step explanation:

5+7.50+8.25+8+9.75+10.25+11+10.75 = 70.5

70.5 \div 8 = 8.8125

6 0
3 years ago
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What point on the line y=9x+8 is closest to the origin
Marat540 [252]

to find the point, find the location

realize that the shortest line that crosses through the origin and y=9x+8 is perpendicular to y=9x+8

perpendicular lines have slopes that multiply to get -1

y=9x+8 has a slope of 9

9*m=-1, m=-1/9

the slope of the mystery line is -1/9

since it passes through the origin, the y intercept is 0

y=(-1/9)x is the equation of the line from the point to the origin

find the intersection of this line and the original line

set them equal to each other

(-1/9)x=9x+8

multily both sides by 9

-x=81x+72

minus 81 both sides

-82x=72

divide both sides by -82

x=-36/41

find y

y=(-1/9)x

y=(-1/9)(-36/41)

y=4/41

the point is (\frac{-36}{41},\frac{4}{41})

3 0
2 years ago
A book store is keeping track of the price of books according to the number of pages. Which scatterplot represents that bivariat
tangare [24]

Answer:

The graph has pages on the X-axis and price (dollars) on the Y-axis

Step-by-step explanation:

The X-axis will always have the independent variable (pages), while the Y-axis will have the dependent variable (number of pages).  The pages will exist no matter how many there are, but the price is influenced by the number of pages.

3 0
3 years ago
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