Can somebody who knows how to find the rates and ratios pls answer these word problems thanks!! (Answer as many as u can) :)

WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST!!!:DDD

Answer:76904685 ways

please give brainliest

The correct statement is: provided that the sample size is reasonably large (for any population).

The Central Limit Theorem states that, under certain conditions, the sampling distribution of the sample mean will be approximately normal, regardless of the shape of the population distribution.

These conditions include a random sample from the population and a sufficiently large sample size (typically, n > 30 is considered large enough).

Therefore, the Central Limit Theorem is important because it allows us to make inferences about the population mean using the normal distribution, even if we do not know the population distribution.

This is useful in many applications of statistics, including hypothesis testing, confidence intervals, and estimating population parameters

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Answer:

2y - 5 (read below)

Step-by-step explanation:

-8y + 10y = 2y

2 + (-7) = -5

Your expression could/would be:

2y - 5.

Hope this helps!

Answer:

you can combine -8y and 10y since 8 is negative it would be =2y

an you can do 2+-7=-5

The purpose of the coordinate graphing system described by Descartes in his book "Discourse on Method" is to use algebraic methods to solve geometric problems. That is option A.

The coordinate graphing system is used on graphical systems to describe the relationship or location between two points on different axes such as X and y axis.

According to Descartes in his book "Discourse on Method" he developed a connection between Algebra and geometry.

Therefore, the main purpose for the coordinate graphing system is to use algebraic methods to solve geometric problems.

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Answer:

The answer that you are looking for is A.

Have a great day!

Step-by-step explanation:

Please mark me brainliest!

Answer:

slope = - \(\frac{4}{3}\)

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)

with (x₁, y₁ ) = (7, 12 ) and (x₂, y₂ ) = (19, - 4 )

m = \(\frac{-4-12}{19-7}\) = \(\frac{-16}{12}\) = - \(\frac{4}{3}\)

The volume of the sphere is 2308.4 mm³

From the question, we are to determine the volume of the sphere

The volume of a sphere is given by the formula

\(V=\frac{4}{3}\pi r^{3}\)

Where V is the volume

and r is the radius

From the given information,

Diameter, d, of the sphere = 16.4 mm

r = 16.4/2

r = 8.2 mm

∴ \(V=\frac{4}{3}\times 3.14 \times 8.2^{3}\)

V = 2308.394

V ≅ 2308.4 mm³

Hence, the volume of the sphere is 2308.4 mm³

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Answer:

6.89 cm

Step-by-step explanation:

Here, the equation is :

Substituting the known values :

height: 6.9 cm

\(\sf Volume \ of \ Pyramid = \dfrac{1}{3} \ x \ Base \ Area \ x \ Height\)

Volume: 34 cm³

base area: 14.8 cm²

\(\sf \rightarrow \dfrac{1}{3} \ x \ 14.8 \ x \ Height = 34\)

change side

\(\sf \rightarrow Height = \dfrac{34(3)}{14.8}\)

simplify following

\(\sf \rightarrow Height = 6.891892\)

rounded to nearest tenth

\(\sf \rightarrow Height = 6.9\)

No a subspace of a finite dimensional vector space cannot be an infinite dimensional vector space

This is due to the fact that a subspace is a subset of a larger vector space and must have the same dimension as its parent vector space. In other words we can say that, if the parent vector space is finite dimensions,then the subspace must be as well.

To put it in another way, a vector space is finite dimensional if it can be traversed by a limited number of vectors. A subspace can only be spanned by a subset of the vectors that span the parent vector space since it is a subset of a larger vector space. As a result, if the parent vector space has finite dimensions, the subspace must be as well.

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The value of the iterated integral using polar coordinates is π.

What is Polar Coordinates?

a polar coordinate system is a two-dimensional coordinate system in which each point in a plane is specified by a distance from a reference point and an angle from a reference direction. The reference point is called the pole, and the ray from the pole in the reference direction is the polar axis.

To evaluate the iterated integral ∫∫ e^(-x^2 - y^2) dy dx using polar coordinates, we need to convert the Cartesian coordinates (x, y) to polar coordinates (r, θ).

In polar coordinates, x = r cos(θ) and y = r sin(θ), where r represents the distance from the origin and θ represents the angle with the positive x-axis.

To convert the integral limits, we consider the region of integration. Since no limits are provided in your question, let's assume the integral is over the entire xy-plane.

In Cartesian coordinates, the entire xy-plane covers the range -∞ to +∞ for both x and y. In polar coordinates, this corresponds to the entire range of r from 0 to ∞ and the entire range of θ from 0 to 2π.

The Jacobian determinant for the conversion from Cartesian to polar coordinates is r, so we have dy dx = r dr dθ.

Now, let's express the integrand e^(-x^2 - y^2) in terms of polar coordinates:

e^(-x^2 - y^2) = e^(-(r cos(θ))^2 - (r sin(θ))^2)

= e^(-r^2(cos^2(θ) + sin^2(θ)))

= e^(-r^2)

Substituting the variables and the Jacobian into the original integral, we get:

∫∫ e^(-x^2 - y^2) dy dx

= ∫[0 to 2π] ∫[0 to ∞] e^(-r^2) (r dr) dθ

Now, we can evaluate this integral using polar coordinates. The inner integral with respect to r is a standard integral:

∫[0 to 2π] ∫[0 to ∞] e^(-r^2) (r dr) dθ

= ∫[0 to 2π] (-1/2) e^(-r^2) ∣∣[0 to ∞] dθ

= ∫[0 to 2π] (-1/2) (e^(-∞^2) - e^(0^2)) dθ

= ∫[0 to 2π] (-1/2) (0 - 1) dθ

= ∫[0 to 2π] (1/2) dθ

= (1/2) θ ∣∣[0 to 2π]

= (1/2) (2π - 0)

= π

Therefore, the value of the iterated integral using polar coordinates is π.

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Given statement solution is :- The t-statistic associated with the test is approximately -0.28.

The t-statistic, which is used in statistics, measures how far a parameter's estimated value deviates from its hypothesised value relative to its standard error. Through the Student's t-test, it is utilised in hypothesis testing. In a t-test, the t-statistic is used to decide whether to accept or reject the null hypothesis.

To find the t-statistic associated with the test, we need to calculate the test statistic using the estimated slope coefficient, the null hypothesis, and the standard error.

The estimated slope coefficient is 4.93.

The null hypothesis is H₀: β₁ ≥ 5.14 (stating that the true slope coefficient is greater than or equal to 5.14).

The predicted slope's standard error is 0.74.

The formula to calculate the t-statistic is:

t = (estimated slope - hypothesized slope) / standard error

Plugging in the values:

t = (4.93 - 5.14) / 0.74

t = -0.21 / 0.74

t ≈ -0.28 (rounded to two decimal places)

Therefore, the t-statistic associated with the test is approximately -0.28.

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Answer:

There are no reflectional symmetries.

Step-by-step explanation:

Hi there, a reflectional symmetry requires the reflection to mirror that of the figure being reflected. To put it in simpler terms, it should look exactly the same if you put one half right next to a mirror.

I hope this clears up things a bit.

The required, latter F does not have reflectional symmetries.

Reflection symmetry is a type of symmetry where a figure is reflected across a line, called the line of symmetry, and the resulting figure is identical to the original. In other words, if you were to fold the figure along its line of symmetry, the two halves would match up perfectly.

Since we have given the figure of latter F, which does not have reflectional symmetries.

It's important to note that not all letters have reflectional symmetry, but the letter "F" is one example of a letter that does have this type of symmetry.

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Linear pairs are the angles which formed a straight line

Look at your figure

Which angle pairs formed a straight line

Angle 1 and angle 5 formed a straight line

The sum of them = 180 degrees

Angles 1, 2, and 3 formed a straight line

The sum of them = 180 degrees

Angles 2, 3, and 4 formed a straight line

The sum of them is 180 degrees

Angles 4 and 5 formed a straight line

The sum of them = 180 degrees

So, the linear pairs are

Angle 1 and angle 5

Angle 4 and angle 5

Answer:

The common denominator of 13/24 and 7/12 would be 12.

Step-by-step explanation:

The least common factor of 24 and 12 is 12.

The most common error when entering a formula is to reference the wrong cell in the formula.

This error occurs when the cell references within a formula do not match the intended cells. It can lead to incorrect calculations and produce unexpected results. For example, if a formula is supposed to use data from cell A1 but mistakenly refers to cell B1, the calculation will be based on the wrong data. It is important to double-check and ensure that the cell references in a formula accurately reflect the intended data sources to avoid this common mistake.

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Given the dilation rule `do,1/3 (x, y) →` and the image `s't'u'v'`, we need to find the coordinates of vertex `v` of the pre- curvature  image.

Since the dilation is by a factor of `1/3`, it means that every coordinate of the pre-image will be divided by `3`.Let the coordinates of vertex `v` of the pre-image be `(a, b)`. Then, the coordinates of vertex `v` of the image `s't'u'v'` will be `(3a, 3b)`. Therefore, we have:`do,1/3 (a, b) → (3a, 3b)`

Comparing the given image coordinates with the dilated pre-image coordinates, we get:`s' = 3a``t' = 3b`Since `s` and `t` are the coordinates of vertex `v` of the image `s't'u'v'`, it means that `v` is located at `(s', t')`. Therefore, the coordinates of vertex `v` of the pre-image are:`v = (a, b)`And the coordinates of vertex `v` of the image are:`v' = (s', t') = (3a, 3b)`Hence, option `(0, 0)` represents the coordinates of vertex `v` of the pre-image since both `a` and `b` are equal to zero.

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Answer:

(0,3)

Step-by-step explanation:

edge 2023!! i js got it right :DD

have a nice day <33

Answer:

No solution

Step-by-step explanation:

The reason why I say this problem has no solution is due to the fact that it says only one person may go on Saturday yet some fraction of the people between the numbers 1 - 14 can go. We have no idea what this fraction is, leading to a paradox of multiple equations and guesses desperately trying to figure out the number. Thus, the problem has no solution.

Hope this helps.

The rate of change of a periodic function is itself a periodic function. In the case of a sinusoidal wave, the derivative is also a sinusoidal wave with the same period, but shifted by a phase angle of \(π/2.\)

The rate of change of a periodic function at a specific point is equal to the instantaneous slope of the tangent line to the graph of the function at that point.

To calculate the rate of change of a periodic function, you need to take the derivative of the function with respect to the independent variable (usually time). If the function is a sinusoidal wave, you can use trigonometric identities to find the derivative.

For example, let's say we have a function f(t) = sin(t), which represents a sinusoidal wave. To find the rate of change of the function at a particular point t = a, we need to take the derivative of the function with respect to t:

f'(t) = cos(t)

Then we can evaluate this derivative at t = a to find the rate of change at that point:

f'(a) = cos(a)

This tells us the instantaneous rate of change of the function at the point t = a.

Note that the rate of change of a periodic function is itself a periodic function. In the case of a sinusoidal wave, the derivative is also a sinusoidal wave with the same period, but shifted by a phase angle of \(π/2.\)

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A.  This expression gives: AC = -38 + 150/Q

B.  The manufacturer receives a maximum weekly profit of £594.50 when it produces 12.25 units per week.

C. The profit function is maximized at this point, since it is increasing for smaller values of Q and decreasing for larger values of Q.

a) The total cost (TC) function is given by the sum of fixed costs and variable costs:

TC = FC + VC

where FC is the weekly fixed cost of £150 and VC is the weekly variable cost per unit, which is given by VC = 2Q - 40. Substituting this expression into the TC function gives:

TC = 150 + 2Q - 40Q

Simplifying this expression gives:

TC = -38Q + 150

The average cost (AC) function is given by the total cost divided by the quantity:

AC = TC/Q

Substituting the expression for TC gives:

AC = (-38Q + 150)/Q

Simplifying this expression gives:

AC = -38 + 150/Q

b) The profit function (π) is given by the difference between revenue and cost:

π = TR - TC

where TR is the total revenue, which is equal to price times quantity, or PQ. Substituting the demand function P = 60 - 4Q gives:

TR = PQ = (60 - 4Q)Q = 60Q - 4Q^2

Substituting the expression for TC gives:

π = TR - TC = (60Q - 4Q^2) - (-38Q + 150)

Simplifying this expression gives:

π = -4Q^2 + 98Q - 150

To find the profit-maximizing level of output, we take the derivative of the profit function with respect to Q and set it equal to zero:

dπ/dQ = -8Q + 98 = 0

Solving for Q gives:

Q = 12.25

To check that this is a maximum, we take the second derivative:

d²π/dQ² = -8 < 0

Since the second derivative is negative, we know that Q = 12.25 is a maximum.

Substituting this value of Q into the profit function gives:

π = -4(12.25)^2 + 98(12.25) - 150 = £594.50

Therefore, the manufacturer receives a maximum weekly profit of £594.50 when it produces 12.25 units per week.

c) At the profit-maximizing level of output, the marginal revenue (MR) is equal to the marginal cost (MC). The marginal cost function is given by the derivative of the total cost function:

MC = dTC/dQ = -38

The marginal revenue function is given by the derivative of the demand function:

MR = dTR/dQ = 60 - 8Q

At the profit-maximizing level of output Q = 12.25, we have:

MC = -38

MR = 60 - 8(12.25) = -1

Since MR < MC, the profit function is decreasing at this point and the maximum profit has been achieved. This can be seen in the graph as the profit function peaks at Q = 12.25 and decreases for larger or smaller values of Q.

Here is a sketch of the relationship between the marginal cost (MC), the marginal revenue (MR), and the profit function at the profit-maximizing level of Q:

     |

MR     |

/\    /  

/  _/     _

/              

-------------------> Q

MC

The vertical line indicates the profit-maximizing level of output, where MR = MC. The profit function is maximized at this point, since it is increasing for smaller values of Q and decreasing for larger values of Q.

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The values of the inverse functions are f-¹ (3) = -1 and f-¹ (8) = 7

From the question, we have the following parameters that can be used in our computation:

x   f(x)

-1   3

1     6

2    5

3    7

7   8

Using the above as a guide, we have the following:

f-¹ (x) means that we calculate the value of x from the table when y = x in the function notation

So, we have

f-¹ (3) = -1 and f-¹ (8) = 7

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Answer:

radius was given

V=1570 ft cubed

Step-by-step explanation:

Volume of a cylinder= 3.14(r^2)h

=3.14(10^2)5

=15.7(100)

=1570

y-y₁=m(x-x₁) is the equation of line passing through two points. So y=-x+3 is the equation of line passing through (4,-1) and perpendicular to y=x+5.

y-y₁=m(x-x₁)is the equation of line passing through two points where m is the slope.

The given equation of a line is y=x+5

the slope of the line is 1.

Now we need to find the equation line perpendicular to y=x+5 and passing through (4,-1).

y-y₁=m(x-x₁)

y-(-1)=m(x-4)

y+1=m(x-4)

Since the line is perpendicular to  y=x+5, the product of their slope is -1.

m1m2=-1

m2=-1

So  y+1=-1(x-4)

y+1=-x+4

y=-x+3.

Therefore y=-x+3 is the required equation of the line.

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Answer:

The length is 6.5

and the area is 6.5⁴

Answer:

720.8

Step-by-step explanation:

(2.6 × 106) + (4.2 × 106)

275.6 + 445.2

720.8

Answer:

111°

Step-by-step explanation:

Angle b and 69° are on a straight line and supplementary which means their sum is equal to 180°

180 - 69 = 111°

Answer:

d = r * i

Step-by-step explanation:

x² + 6x + 5 = 0

To find the solution, we can use the quadratic formula.

The solutions are (-1, 0) and (-5, 0)

Answer:

C

Step-by-step explanation:

Given

(- 2x - 3) - (3x² - 8x + 9) ← distribute parenthesis

= - 2x - 3 - 3x² + 8x - 9 ← collect like terms

= - 3x² + 6x - 12 → C