suppose a jar contains 9 red marbles and 14 blue marbles. if you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red. answer should be in fractional form.

Answer:c

Step-by-step explanation:6.1 x 10 =61

Step-by-step explanation:

A Part:-

5.03 x 10

So it can be written as :-

\( \dfrac{503 \times \cancel{10}}{ 10\cancel{0}} \)

So, 50.3.

B part:-

5.45 ×10

\( \dfrac{545 \times \cancel{10}}{ 10\cancel{0}} \)

So 54.5.

C part:-

\( \dfrac{61 \times \cancel{10}}{ \cancel{10}} \)

So, 61

\( \dfrac{234 \times \cancel{10}}{10 \cancel{0}} \)

So, 23.4

A correlation of .9 indicates that 81% of the variance between two variables has been explained.

Correlation measures the strength of the relationship between two variables. A perfect positive correlation is 1.0, indicating that the two variables move in the same direction together. A perfect negative correlation is -1.0, indicating that the two variables move in opposite directions. A correlation of 0 indicates no relationship between the two variables.

To determine the proportion of variance explained by a correlation, you need to square the correlation coefficient (in this case, 0.9). This is called the coefficient of determination (R^2). So, you calculate:

R^2 = (0.9)^2 = 0.81

Thus, a correlation of 0.9 explains 81% of the variance between the two variables.

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Answer:

C(1,4) , A(-2,-3), R (3,2)

Step-by-step explanation:

the formula thing for rotating 180° about the origin is (x,y) -> (-x,-y)

this doesn't mean make the number negative, but make it the opposite if that makes sense

e.g. F(2,-4) -> F(-2,4)

Answer:

2 cos (x + pi/2)

Step-by-step explanation:

Of the choices given, this looks like a cos curve that is shifted to the Left by pi / 2  and   multiplied to give an amplitude of 2

Answer:

PRQ = 86 degrees

The larger the group of answer choices, the less likely our data represent the model due to larger differences between the expected frequencies.

Based on the terms provided, we want to know the relationship between the size of a group of answer choices, differences between expected frequencies, and how likely the data represents a model.

The larger the group of answer choices, the larger the differences between the expected frequencies, and the less likely our data represent the model.

This is because a larger group of answer choices increases the complexity of the dataset, which may lead to more significant deviations from the expected frequencies, ultimately making it less likely that the data represents the given model.

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The system of equations is consistent and has a unique solution at (-4, 1).

To solve the system of equations by graphing, we can plot the lines represented by each equation on a coordinate plane and find their point of intersection.

The given system of equations is:

1) 3x + y = -3

2) 6x - 6y = -30

Let's graph these equations:

For equation 1, 3x + y = -3, we can rewrite it as y = -3x - 3.

For equation 2, 6x - 6y = -30, we can simplify it to x - y = -5, and then y = x + 5.

Now, let's plot these lines on a graph:

The line for equation 1, y = -3x - 3, has a slope of -3 and y-intercept of -3. It will have a negative slope, and we can plot two points on the line: (0, -3) and (-1, 0).

The line for equation 2, y = x + 5, has a slope of 1 and y-intercept of 5. We can plot two points on this line as well: (0, 5) and (-5, 0).

Plotting these lines on a graph, we can see that they intersect at the point (-4, 1).

Now, let's analyze the system:

Since the lines intersect at a single point, the system is consistent. The solution to the system is the coordinates of the point of intersection, which is (-4, 1).

In summary, the system of equations is consistent and has a unique solution of x = -4 and y = 1.

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Answer:

Step-by-step explanation:

Sup? Pay attention closely (or not XD)

Short answer: 0.0308 or 3.08%

We use the combination formula C = n!/(r! * (n-r)!) for each brand. It basically tells us the number of ways to select a certain number of cars:

1) Fords: C(5, 2) = 5! / (2! * (5 - 2)!) = 10 ways to pick 2 Fords

2) Chevrolets: C(7, 3) = 7! / (3! * (7 - 3)!) = 35 was to pick 3 Chevys

3) Dodges: C(4, 1) = 4! / (1! * (4 - 1)!) = 4 ways to pick 1 Dodge

4) Hondas: C(3, 1) = 3! / (1! * (3 - 1)!) = 3 ways to pick 1 Honda

5) Toyotas: C(4, 2) = 4! / (2! * (4 - 2)!) = 6 ways to pick 2 Toyotas

Then you multiply all them results. Peep this:

10*35*4*3*6 = 25,200 ways to pick your target cars from each brand in total (sheesh)

Now how many ways would it be to pick 9 out of the 23 cars??

Use your best friend combination problem to solve this!

C(23, 9) = 23! / (9! * (23 - 9)!) = 817,190 (sheesh)

Now divide! 25,200/817,190 = 0.0308 or 3.08%

Thanks for listening to my TED talk. Hope this helps.

The value is 24 square units is parallel to the face of the right rectangular prism.

We can see that the face of the given rectangular prism shows a width 4 and a height of 6. If we cut the figure at any point along the length 20, such that the cross-section is parallel to the face, the cross-section, which occurs at x length, will always have the same dimensions, which are 4 and 6.

So the area of the cross-section which is parallel to the face of the given rectangular prism is given by:

A = 6 × 4

A = 24

Thus, the value is 24 square units is parallel to the face of the right rectangular prism.

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A = 6 × 4

A = 24

Thus, the value is 24 square units is parallel to the face of the right rectangular prism.

Answer: 10, 5, and 2

Step-by-step explanation: they're all divisible numbers and could lead up to some sort of possibility of how much candy is in each barrel

All of the following are measures of central tendency except the range.

The range is a measure of dispersion, representing the difference between the largest and smallest values in a dataset. It provides information about the spread or variability of the data but does not provide information about the central tendency.

On the other hand, measures of central tendency are statistical measures that aim to summarize the center or typical value of a dataset. They include the mode, median, and mean.

The mode represents the most frequently occurring value(s) in the dataset.

The median is the middle value when the data is arranged in ascending or descending order. It divides the dataset into two equal halves.

The mean is the arithmetic average of all the values in the dataset. It is calculated by summing all the values and dividing by the total number of values.

Therefore, option C, range, is not a measure of central tendency as it focuses on the spread or dispersion of the data rather than summarizing the central or typical value.

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The length of the fabric which Brandon formed a rectangle, is 11 inches.

To find the length of the fabric, we can use the Pythagorean theorem. The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides.

In this case, the length of the fabric is one of the other two sides, and the diagonal cut is the hypotenuse. So, we can write the equation:

\(L^2 + 5^2 = 13^2\)

where L is the length of the fabric.

Solving for L, we get:

\(L^2 = 144 - 25 = 119, and L =\sqrt{119} = 11.\)

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F[h(t – s)e¯³² ds](ω) = -4/(4 + ω²).To evaluate the expression F[h(t – s)e¯³² ds](ω), we can use the convolution property of Fourier transforms.

According to the convolution property, the Fourier transform of the product of two functions is given by the convolution of their Fourier transforms. In this case, we have the function h(t – s)e¯³² and its Fourier transform H(ω).
Using the convolution property, we can write the expression as H(ω) * √e-²/4.
Performing the convolution, we obtain the result -4/(4 + ω²).
Therefore, F[h(t – s)e¯³² ds](ω) = -4/(4 + ω²).

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Answer:

288

Step-by-step explanation:

just count by

Vr : Vc

Vr = Volume of rectangular

Vc = Volume of cube

Vr : Vc

4 * ¾ * 1 ½ : ¼ * ¼ * ¼

4.5 : 1/64

4.5 * 64 = 288 cubes needed

Answer:

C

Step-by-step explanation:

Answer:

hi its c because its not a traight line

Step-by-step explanation:

If you want to analyze how the GPA of a group of students changes from high school to college, you could use a paired t-test or a repeated measures ANOVA.

ANOVA, or analysis of variance, is a statistical method used to compare means between two or more groups. It is based on the assumption that there is a variation in the means of the groups, and it aims to determine if this variation is due to chance or if it is significant.

ANOVA works by comparing the variance between the groups with the variance within the groups. If the variance between the groups is significantly larger than the variance within the groups, then it suggests that there is a significant difference between the means of the groups. There are different types of ANOVA, such as one-way ANOVA, which compares means across one independent variable, and two-way ANOVA, which compares means across two independent variables.

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Answer:

x= -10

y= 4

Step-by-step explanation:

it will be easiest to isolate x in the first equation

x+7y=18

 -7y. -7y

x=18-7y

now that we know x we will it into second equation

2(18-7y)+9y=16

36-14y+9y=16

36-5y=16

-36.    -36

-5y=-20

/-5   /-5

y=4

now fill in y to find x

x+7(4)=18

x+28=18

-28   -28

x= -10

hopes this helps please mark brainliest

Answer:

2,0?

Step-by-step explanation:

To do this, find your first derivative and then find where it is equal to zero. Because we are only concerned about the interval from -5 to 0, we only need to test points on that interval. (i really don't know hot to explain)

The best conclusion for her to come to: D. this could easily happen with a fair coin after only 3 flips.

A fair coin can be defined as an idealized type of coin that has an equal probability of revealing both heads and tails when randomly tossed.

This ultimately implies that, the best conclusion for her to come to is that this could easily happen with a fair coin after only 3 flips considering 2 of the three coins come up tails.

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The sum of 1039 g and 36.7 kg expressed in milligrams (mg) to the correct number of significant figures is 37,739,000 mg.

To perform the addition, we need to convert 36.7 kg to grams before adding it to 1039 g. There are 1000 grams in 1 kilogram, so we multiply 36.7 kg by 1000:

36.7 kg * 1000 g/kg = 36,700 g

Now, we can add 1039 g and 36,700 g:

1039 g + 36,700 g = 37,739 g

To convert grams to milligrams, we multiply by 1000 because there are 1000 milligrams in 1 gram:

37,739 g * 1000 mg/g = 37,739,000 mg

The final result, expressed in milligrams with the correct number of significant figures, is 37,739,000 mg.

The sum of 1039 g and 36.7 kg, expressed in milligrams (mg) with the correct number of significant figures, is 37,739,000 mg. Remember to consider unit conversions and maintain the appropriate number of significant figures throughout the calculation.

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Answer:

2 nd one

Step-by-step explanation:

her commision varies

brainliest please

Answer: e = 200s + 4

Step-by-step explanation:

took the test

Answer:

3/8

Step-by-step explanation:

3/4 divide 2 = 4÷2= 3/8

Answer:

3/4 * 1/2 = 3/8

The answer is 3/8

The Synthetic Division gives the Quotient =  7x² -4x + 5 and Remainder = 8.

Instead of using the usual long division algorithm, synthetic division is a faster way to divide two polynomials. The dividend and divisor polynomials are reduced using this technique to a collection of numerical values.

Given:

(7x³-25x² +17x -7) divided by (x-3).

So, Synthetic Division is as follows:

                                          (x-3) | (7x³-25x² +17x -7) | 7x² -4x + 5

                                                     7x³-21x²

                                                  _________

                                                            -4x² + 17x

                                                            -4x² + 12x        

                                                     _______________

                                                                         5x - 7              

                                                                          5x - 15

                                                                        ________

                                                                                8

                                                                         ________

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Answer:

x = 11, arc RB = 150°

Step-by-step explanation:

The secant- secant angle RDB is calculated as half the difference of its intercepted arcs, that is

∠ RDB = \(\frac{1}{2}\) ( RB - EC ), that is

5x - 10 = \(\frac{1}{2}\) ( 13x + 7 - 60 )

Multiply both sides by 2 to clear the fraction

10x - 20 = 13x - 53 ( subtract 13x from both sides )

- 3x - 20 = - 53 ( add 20 to both sides )

- 3x = - 33 ( divide both sides by - 3 )

x = 11

Thus

arc RB = 13x + 7 = 13(11) + 7 = 143 + 7 = 150°

The required ratios are D/A = 0.62, N/E = 0.26, D+E = A. N/A = 0.1% D/A = 0.21, A-D=E. D/E = 4.69 D/A = 0.70, A=D+E. N/E = 7.3% and S/A = 7.6, N/S= .08, D/A = -55, A=D+E. N/A = 1.1%

The required ratios are given below:

D/A = 0.62

N/E = 0.26

D+E = A

From D+E = A, we get E = A - DD/A = 0.62A = D/0.62E = A - D

Substitute these values into N/E = 0.26

N/A = N/E * E/AN/A

N/A = 0.26 * (A - D)/A

Also, given that A = D+E and substituting the values of A and E in it, we get

A = 1.62D

From D/A = 0.21, we get

A = D/0.21

A-D = E

Substitute the value of E in terms of D and A. We get,

A = 1.21D

From D/A = 0.70, we get

A = D/0.70

A = D+E

Also, we have N/A = 0.17.

Substituting the values of A and E in terms of D and solving the above equations, we get

D = -127.82,

A = -222.93, and

E = 95.11.

Now N/E = 17/100, we get

N/E = 0.17.

Substituting the values of E and D, we get

N/A = 7.6 * 0.08 / 0.55

N/A = 1.10%

The values of the required ratios are summarized below:

D/A = 0.62,

N/E = 0.26,

D+E = A,

Find N/A = 0.1%

D/A = 0.21,

A-D=E,

Find D/E = 4.69

D/A = 0.70,

A=D+E,

Find N/E = 7.3% and

S/A = 7.6,

N/S= .08,

D/A = -55,

A=D+E,

N/A = 1.1%

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A parameterization for the portion of the sphere of radius 2 that lies between the planes y = 0 and x = 0 in the first octant is x = sin(tπ), y = sin^2(tπ/2), z = 2.

To find a parameterization for the portion of the sphere of radius 2 that lies between the planes y = 0 and x = 0 in the first octant, we can use spherical coordinates.

In spherical coordinates, a point on a sphere is represented by (ρ, θ, φ), where ρ is the radial distance, θ is the azimuthal angle (measured from the positive x-axis), and φ is the polar angle (measured from the positive z-axis).

Considering the given conditions, we know that the sphere lies in the first octant, so both θ and φ will vary from 0 to π/2.

To parameterize the portion of the sphere in question, we can express ρ, θ, and φ in terms of a parameter, say t, where t ranges from 0 to 1.

Let's set up the parameterization:

ρ = 2 (constant, as the sphere has a radius of 2)

θ = tπ/2 (parameterizing from 0 to π/2)

φ = tπ/2 (parameterizing from 0 to π/2)

Now, we can obtain the Cartesian coordinates (x, y, z) using the spherical-to-Cartesian conversion formulas:

x = ρ sin(φ) cos(θ)

y = ρ sin(φ) sin(θ)

z = ρ cos(φ)

Substituting the parameterizations for ρ, θ, and φ, we have:

x = 2 sin(tπ/2) cos(tπ/2)

y = 2 sin(tπ/2) sin(tπ/2)

z = 2 cos(tπ/2)

Simplifying these expressions, we get:

x = 2 sin(tπ/2) cos(tπ/2) = sin(tπ)

y = 2 sin(tπ/2) sin(tπ/2) = sin^2(tπ/2)

z = 2 cos(tπ/2) = 2 cos(0) = 2

Therefore, a parameterization for the portion of the sphere of radius 2 that lies between the planes y = 0 and x = 0 in the first octant is:

x = sin(tπ)

y = sin^2(tπ/2)

z = 2

Here, t varies from 0 to 1 to cover the desired portion of the sphere.

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The radius of the cone is 783.84/√h

A cone is the surface traced by a moving straight line (the generatrix) that always passes through a fixed point (the vertex).

Volume is defined as the space occupied within the boundaries of an object in three-dimensional space.

The volume of a cone is expressed as;

V = 1/3πr²h

643072 × 3 = 3.14 × r²h

r²h = 614400

r² = 614400/h

r = 783.84/√h

therefore the radius of the cone is 783.84/√h

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