Times (s)


30, 90, 150



Number of Wing beats


420, 1,260, 2,100




How many times will a mockingbird beat its wings in 2 minutes? Enter the number in the box.

Answer:

Step-by-step explanation:

HIIIIIIIIIIIIIIIIIIIIIIIIIIIIII

Answer:

Slope Intercept form: y = mx + b

Step-by-step explanation:

mx: the slope

b: y- intercept

To find the slope, use this formula:

y₂ - y₁ / x₂ - x₁

Add in the numbers

1 - (-5) / 0 - 2

-6/2 (or -3) = slope

Use point-slope form to find the Y- intercept

y - y₁ = m (x - x₁)

y - (-5) = -3 (x - 2)

y + 5 = -3x + 6

Subtract 5 from both sides

y = -3x + 1 ← Slope intercept form

Graph the y- intercept at 1, and go down 3 and to the right 1. Your two coordinates will be (0 , 1) and (1, -2) .

The first derivative of the function \(g(x) = 6x^3 + 36x^2 - 90x\) is \(g'(x) = 18x^2 + 72x - 90\). The second derivative of the function is g''(x) = 36x + 72. Evaluating g''(-5), we have g''(-5) = 36(-5) + 72 = -180 + 72 = -108. The graph of g(x) is concave down at x = -5. At x = -5, the graph of g(x) has a local maximum.

To find the first derivative of the function \(g(x) = 6x^3 + 36x^2 - 90x\), we differentiate each term separately using the power rule. The derivative of \(6x^3\) is \(18x^2\), the derivative of \(36x^2\) is 72x, and the derivative of -90x is -90. Combining these derivatives, we get \(g'(x) = 18x^2 + 72x - 90.\)

To find the second derivative, we differentiate g'(x) with respect to x. The derivative of 18x^2 is 36x, and the derivative of 72x is 72. Thus, the second derivative is g''(x) = 36x + 72.

Evaluating g''(-5) means substituting -5 into the expression for g''(x). We get:

g''(-5) = 36(-5) + 72

= -180 + 72

= -108.

The concavity of the graph of g(x) can be determined by the sign of the second derivative. If g''(x) > 0, the graph is concave up, and if g''(x) < 0, the graph is concave down. Since g''(-5) = -108, which is negative, we conclude that the graph is concave down at x = -5.

At a point where the concavity changes, there is either a local minimum or a local maximum. In this case, since the graph is concave down at x = -5, it has a local maximum at that point.

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Answer:

It's B

Step-by-step explanation:

Functions can be represented by tables and equations

The function represented by the table is f(x) = x + 1

From the table, we have the following ordered pairs

(x,y) = (-1,0) (0,1) (1,2) and (2,3)

Notice that the difference between the x and y values is 1.

So, we have:

y - x = 1

Add 1 to both sides

y = x + 1

Express as a function

f(x) = x + 1

Hence, the function represented by the table is f(x) = x + 1

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Answer:

Mr.Walters car can go 15 miles on one gallon of gas.

Step-by-step explanation:

To find this, you first want to put it into a ratio.

480:32

Next, you want to divide.

480/32

After you divide, you get 15. That tells you that you get 15 miles off of one gallon of gas.

Answer:

15 miles

Step-by-step explanation:

Answer:  \(\bold{9)\ \sin \theta=\dfrac{1}{3}\qquad 10)\ \sin \theta = \dfrac{4}{5}\qquad 11)\ \cos \theta = \dfrac{\sqrt{11}}{6}\qquad 12)\ \tan \theta = \dfrac{17\sqrt2}{26}}\)

Step-by-step explanation:

Pythagorean Theorem is: a² + b² = c²   , where "c" is the hypotenuse

\(9)\ \sin \theta=\dfrac{\text{side opposite of}\ \theta}{\text{hypotenuse of triangle}}=\dfrac{4}{12}\quad \rightarrow \large\boxed{\dfrac{1}{3}}\)

Note: 4² + (8√2)² = hypotenuse²   →   hypotenuse = 12

\(10)\ \sin \theta=\dfrac{\text{side opposite of}\ \theta}{\text{hypotenuse of triangle}}=\dfrac{16}{20}\quad \rightarrow \large\boxed{\dfrac{4}{5}}\)

Note: 12² + opposite² = 20²   →   opposite = 16

\(11)\ \cos \theta=\dfrac{\text{side adjacent to}\ \theta}{\text{hypotenuse of triangle}}=\dfrac{\sqrt{11}}{6}\quad =\large\boxed{\dfrac{\sqrt{11}}{6}}\)

Note: adjacent² + 5² = 6²   →   adjacent = √11

\(12)\ \tan \theta=\dfrac{\text{side opposite of}\ \theta}{\text{side adjacent to}\ \theta}=\dfrac{17}{13\sqrt2}\quad =\large\boxed{\dfrac{17\sqrt2}{26}}\)

Note: adjacent² + 7² = (13√2)²   →   adjacent = 17

Answer:

m= - 1/4  

Step-by-step explanation:

Answer:

24 slices

Step-by-step explanation:

There are 3 whole pizzas. He cuts each of them into eighths. That means eight slices. 3 times 8 is 24. There are a total of 24 slices. This can also look like this: 24/8   or 24 over 8.  Which also equals to 3.

The marginal CDF for y is Fᵧ(y) =\(y + e^{(-y) }- 1\), for y ≥ 0

The given joint cumulative distribution function (CDF) for random variables x and y is:

Fₓ,ᵧ(x, y) = \((1 - e^{(-x)})(1 - e^{(-y)})\), for x ≥ 0 and y ≥ 0

           = 0, otherwise.

From the joint CDF, we can determine the marginal CDFs for x and y by integrating the joint CDF with respect to the respective variable.

Marginal CDF for x:

Fₓ(x) = ∫[0,x] ∫[0,∞] fₓ,ᵧ(u, v) dv du

Since fₓ,ᵧ(u, v) is zero outside the domain x ≥ 0 and y ≥ 0, we can simplify the integration limits:

Fₓ(x) =\(\int _{[0,x]} \int _{[0,\infty]}\) \((1 - e^{(-u)})(1 - e^{(-v)})\) dv du

      = ∫\([0,x] [1 - e^{(-u)}]\) du

      = \([u + e^(-u)]\)|[0,x]

      = \(x + e^{(-x)} - 1\), for x ≥ 0

Therefore, the marginal CDF for x is given by:

\(Fₓ(x) = x + e{(-x)} - 1\), for x ≥ 0

Marginal CDF for y:

Fᵧ(y) = ∫[0,∞] ∫[0,y] fₓ,ᵧ(u, v) du dv

Using similar reasoning as above, we can simplify the integration limits:

Fᵧ(y) = \(\int _{[0,\infty]} \int_{[0,y]}\)(1 - \(e^{(-u)}\))(1 - \(e^{(-v)}\)) du dv

      = \(\int_{[0,y]}\) [1 -\(e^{(-v)}\)] dv

      = [v +\(e^{(-v)}\)]|[0,y]

      = y + \(e^(-y)\) - 1, for y ≥ 0

Therefore, the marginal CDF for y is given by:

Fᵧ(y) =\(y + e^{(-y)} - 1\), for y ≥ 0

These are the marginal CDFs for the random variables x and y based on the given joint CDF.

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If Anova is used in a research study using two therapy groups , then there will be 6 different sample means , the correct option is (d) .

In the question ,

it is given that ,

Anova is used in a research study using two therapy groups ,

for each group , scores will be taken

(i) before the therapy,

(ii) right after the therapy, and (iii) one year after the therapy.

that means ,

the number of therapies group = 2 and

the number of times the measurement is taken is = 3 .

So , the number of sample means is = 2 × 3 = 6 .

Therefore , there will be 6 different sample means .

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Answer:

41.667% or 42%

Step-by-step explanation:

25/60

simplify

5/12 = 41.667

The fraction of a mile that Evan has to hike and the fraction he has hiked, gives the completed statement as follows;

\(\frac{5}{6}\) is closest to 1 and \(\frac{2}{5}\) is closest to \(\frac{1}{2}\). So the difference is closest to \(\frac{1}{2}\)

A fraction is a representation of the part of a whole of an item or collection of items. The distance Evan's hiking trail of \(\frac{5}{6}\) miles is a fraction of a mile.

The length of the trail = \(\frac{5}{6}\) mile

The distance Evan has hiked = \(\frac{2}{5}\) mile

The distance Evan has left to hike is given by the difference between the length of the trail and the distance Evan has hiked as follows;

Distance remaining = \(\frac{5}{6} -\frac{2}{5} = \frac{13}{30}\)

Representing the numbers in decimal form, we have;

\(\dfrac{5}{6} = 0.8\overline 3\)

The value of \(\frac{5}{6}\) is close to 1

\(\dfrac{2}{5} = 0.4\)

The value of \(\frac{2}{5}\) is closest to 0.5

\(\dfrac{13}{30} = 0.4\overline 3\)

The difference between \(\frac{5}{6}\) and \(\frac{2}{5}\), which is \(\frac{13}{30}\) is therefore closest to \(\frac{1}{2}\)

The completed statement is therefore;

\(\frac{5}{6}\) is closest to 1 and \(\frac{2}{5}\) is closest to \(\frac{1}{2}\) so the difference is closest to \(\frac{1}{2}\)

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Answer:

584

Step-by-step explanation:

Hope this helps

The total return over the year is 15.46%. The dividend yield is 7.21%, and the capital gain rate is 15.46%.

The price of a stock is equal to the current dividend plus the present value of all future dividends plus the price in one year. As a result, the share price of SPCC after a year will be:$112 = $7 + $105 + PV$PV = $0

Using the formula of the total return of an asset, which is equal to its capital gain plus dividend yield, we have;Total Return = Capital Gain + Dividend YieldCapital Gain = (Ending Price - Initial Price) / Initial PriceCapital Gain = ($112 - $97) / $97 = 0.1546 or 15.46%Dividend Yield = Annual Dividend per Share / Initial PriceDividend Yield = $7 / $97 = 0.0721 or 7.21%

Therefore, the total return over the year is 15.46%. The dividend yield is 7.21%, and the capital gain rate is 15.46%.

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The other possible domain values are integers greater than 0 and the type of domain would not be reasonable are decimal numbers and numbers less than 0

The table of values is given as:

Number of songs      Total cost

0                                            5.68

5                                            8,64

10                                            14.50

Remove the total cost from the above table

Number of songs

0                          

5                          

10                          

From the above column, we can see that the number of songs is at least  0 and they are integers

This represents the domain

So, the other possible domain values are integers greater than 0

In (a), we have:

The number of songs is at least  0 and they are integers

So, the type of domain would not be reasonable are decimal numbers and numbers less than 0

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The price of one movie ticket without the coupon is  $9.

arithmetic operations

Arithmetic operators are used to perform mathematical operations like addition, subtraction, multiplication and division.

...

There are 7 arithmetic operators in Python :

Addition.

Subtraction.

Multiplication.

Division.

Modulus.

Exponentiation.

Floor division.

since they spend a total of  $42.

so the price of one movie ticket without the coupon is

⇒ (42+12)/6

⇒54/6

⇒ 9

so the price of one movie ticket will be  $9.

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There are 7 degrees of freedom.

In performing the pooled-variance t test, the degrees of freedom can be calculated using the formula:
df = (n1 - 1) + (n2 - 1)

Substituting the given values:
df = (4 - 1) + (5 - 1)
df = 3 + 4
df = 7

Therefore, there are 7 degrees of  freedom.

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There are 7 degrees of freedom for the pooled-variance t-test.

To perform a pooled-variance t-test, we need to calculate the degrees of freedom. The formula for degrees of freedom in a pooled-variance t-test is:

\(\[\text{{df}} = n_1 + n_2 - 2\]\)

where \(\(n_1\)\) and \(\(n_2\)\) are the sample sizes of the two independent samples.

In this case, \(\(n_1 = 4\)\) and \(\(n_2 = 5\)\). Substituting these values into the formula, we get:

\(\[\text{{df}} = 4 + 5 - 2 = 7\]\)

In a pooled-variance t-test, we combine the sample variances from two independent samples to estimate the population variance. The degrees of freedom for this test are calculated using the formula \(df = n1 + n2 - 2\), where \(n_1\)and \(n_2\) are the sample sizes of the two independent samples.

To understand why the formula is \(df = n1 + n2 - 2\), we need to consider the concept of degrees of freedom. Degrees of freedom represent the number of independent pieces of information available to estimate a parameter. In the case of a pooled-variance t-test, we subtract 2 from the total sample sizes because we use two sample means to estimate the population means, thereby reducing the degrees of freedom by 2.

In this specific case, the sample sizes are \(n1 = 4\) and \(n2 = 5\). Plugging these values into the formula gives us \(df = 4 + 5 - 2 = 7\). Hence, there are 7 degrees of freedom for the pooled-variance t-test.

Therefore, there are 7 degrees of freedom for the pooled-variance t-test.

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Answer:

hi

Step-by-step explanation:

hi

hi

hi

Answer:

the question is 4.

Step-by-step explanation:

I just did it on a piece of paper

Answer:

A

Step-by-step explanation:

Step-by-step explanation:

a=2,b=-4,c=7,d=-3

b-a(cd+b)+a=-4-2(7×-3)+2

=-6(-21)+2

=126+2

=128

Keep smiling and hope u are satisfied with my answer.Have a nice day:)

Answer: 48

Given:

a = 2

b = -4

c = 7

d = -3

Now

b - a(cd + b) + a

-4 -2(7(-3) + (-4)) + 2

-4 -2(-21-4) + 2

-2 -2(-25)

-2+50

48

Must click thanks and mark brainliest

Answer:

20%

Step-by-step explanation:

2-1.6=0.4

0.4/2x 100

40/200=1/5 or 20%

Answer:

My answer got deleted because It contained a site, but The answer is

625/16

As a decimal 39.06

Step-by-step explanation:

Answer:

Step-by-step explanation:

f(x) = - | x + 2 | + 2

The vertex of the function is a max of the function at ( - 2 , 2 )

Answer:

Step-by-step explanation:

\(\sf 4^{-3}*4^9= 4^?\)

- When multiplying like bases, we keep the base the same and add the exponents.

- When raising a base with a power to another power, keep the base the same and multiply the exponents.

- When dividing like bases, keep the base the same and subtract the denominator exponent from the numerator exponent.*

- - - - - - - - - - - - - - - - - - - - - - - - - - -

In our example: \(\sf 4^{-3}*4^9= 4^?\) the bases are multiplied therefore, we add the exponents together and keep the bases the same.

→ \(\sf 4^{-3}*4^9 = 4^{\bf 6}\)

- - - - - - - - - - - - - - - - - - - - - - - - - - -

Hope this helps! :)

Answer:

When the father is 68 and the daughter is 34

Step-by-step explanation:

i kept increasing their age by one and dividing till the quotient was 2, (its a long process but easier to understand) and i got two when I divided 68 by 34.

Answer:

9

Step-by-step explanation:

What you do if first you draw your rectangle. You name length as x (as told in the question) and width as x-3 (since the width is 3 feet less). To obtain the area you have to do x × (x-3) because to find area you do length × width right.

So area is x(x-3) and it also tells you that area is 54 there

That's how you get x(x-3)=54

Now to solve it, you have to expand

x(x-3)=54

x²-3x-54 = 0 (you have to factorise this now)

(x+6) or (x-9) = 0

x = -6 or x = 9

As you can see you have two answers there. We have to eliminate the -6 because length can never be negative. The logic is simple, any length you take for example on a ruler (it has to be 0 or above) you can measure 1 feet, 2 feet, even 100 feet but you can't measure less than 0 right?

So the final answer is that x=9 and x represents the length

So length = 9