A bag contains 3 red marbles, 4 blue marbles and 7 green marbles. If two marbles are drawn out of the bag, what is the probability, to the nearest 100oth, that both marbles drawn will be red?​

Answer:

Step-by-step explanation:

To convert from Cartesian coordinates to polar coordinates:

Therefore, for the given coordinate:

Hence, the polar coordinates of the given cartesian coordinates:

By using the concept of null space of a matrix, it can be calculated that

Nullspace of A = \(\{ \begin{bmatrix} 3 \\ 1 \\0 \\ 0\\0 \end{bmatrix} , \begin{bmatrix} 3 \\ 0 \\-4 \\ 1\\0 \end{bmatrix}\}\)

What is Nullspace of a matrix?

Nullspace of a matrix A is the solution of the equation AX= 0 where 0 is the zero matrix

\(\begin{bmatrix} 1 & -3 & 0 & -3 & 0 \\ 0 & 0 & 1 & 4 & 0 \\0 & 0 & 0 & 0 & -1 \end{bmatrix} \begin{bmatrix} x \\ y \\z \\w \\t \end{bmatrix}\)

We need to find Ax = 0

\(\begin{bmatrix} 1 & -3 & 0 & -3 & 0 \\ 0 & 0 & 1 & 4 & 0 \\0 & 0 & 0 & 0 & -1 \end{bmatrix} \begin{bmatrix} x \\ y \\z \\w \\t \end{bmatrix} = \begin{bmatrix} 0 \\ 0 \\0 \end{bmatrix}\)

x - 3y - 3w = 0

x = 3y + 3w

z + 4w = 0

z = -4w

-t =  0

t = 0

\(\begin{bmatrix} x \\ y \\z \\w \\t \end{bmatrix} = \begin{bmatrix} 3y + 3w\\ y \\-4w \\ w\\0 \end{bmatrix}\\\\y \begin{bmatrix} 3 \\ 1 \\0 \\ 0\\0 \end{bmatrix} + w \begin{bmatrix} 3 \\ 0 \\-4 \\ 1\\0 \end{bmatrix}\)

Nullspace of A = \(\{ \begin{bmatrix} 3 \\ 1 \\0 \\ 0\\0 \end{bmatrix} , \begin{bmatrix} 3 \\ 0 \\-4 \\ 1\\0 \end{bmatrix}\}\)

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Complete Question

The complete question has been attached

Answer:

25 minutes is the answer

Answer: A 25 minutes plz give brainliest

Step-by-step explanation:

\(A=\left[\begin{array}{ccc}3&-2\\4&-3\end{array}\right]\)

We can find the A as shown below:

Given A^2=I

We know that A^2=A×A

And \(I=\left[\begin{array}{ccc}1&0\\0&1\end{array}\right]\)

So, \(A^2=\left[\begin{array}{ccc}1&0\\0&1\end{array}\right]\)

Let \(A=\left[\begin{array}{ccc}3&-2\\4&-3\end{array}\right]\)

\(A^2=\left[\begin{array}{ccc}3&-2\\4&-3\end{array}\right] \left[\begin{array}{ccc}3&-2\\4&-3\end{array}\right]\)

\(A^2=\left[\begin{array}{ccc}9-8&-6+6\\12-12&-8+9\end{array}\right]\)

\(A^2=\left[\begin{array}{ccc}1&0\\0&1\end{array}\right]\)

Hence, \(A=\left[\begin{array}{ccc}3&-2\\4&-3\end{array}\right]\)

Hence, option C is correct

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Disclaimer: Given question is incomplete. Complete question is attached.

Answer:

B

Step-by-step explanation:

2x - 11 = k

     +11     +11

2x/2 = k + 11/2

x = k + 11/2

Answer:

set of even counting number is well-defined

"Monica swam 9/16 of a mile on Tuesday. She swam 1 5/8 of a mile on Wednesday. She swam approximately 2 miles in all" is the true statement.

This a problem on addition and subtraction of fractions

Since Hope's dad gives her 7/8 of a chocolate bar one day and then gives her 6/12 of a chocolate bar the next day. Hope received approximately 1 chocolate bar. Total chocolate  received will be:

Total chocolate received = 7/8  + 6/12 = 1 3/8

This statement is not true

Since Dee has 10/12 of a cake and gives 4/8 to her neighbor. Dee has approximately 1 cakes left. The cakes left will be:

cakes left = 10/12 - 4/8 = 1/3

This statement is not true

Since Joe ran 8/15 of a mile on Thursday. He ran 4/5 of a mile on Friday. Joe ran approximately 1/2 mile in all. The total mile ran will be:

total mile ran =  8/15 + 1/2 = 2 1/10

This statement is not true

Monica swam 9/16 of a mile on Tuesday. She swam 1 5/8 of a mile on Wednesday. She swam approximately 2 miles in all.

mile swam =  9/16 +  1 5/8 = 2 3/16

This statement is true

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The blanks in this two-column proof should be completed (filled) as follows:

Statements                              Reasons_______________

ΔADB ≅ ΔCDB                             HL.

AD ≅ CD                                    CPCTC.

In Mathematics, the Right Triangles Similarity Theorem states that when the altitude of a triangle is drawn to the hypotenuse of a right angled triangle, then, the two (2) triangles that are formed would be similar to each other, as well as the original triangle.

In Mathematics, CPCTC is an acronym for corresponding parts of congruent triangles are congruent and it states that the corresponding angles and side lengths of two (2) or more triangles are congruent if they are both congruent i.e AD ≅ CD.

Additionally, HL is an acronym for hypotenuse leg and it states that if the hypotenuse and one (1) leg in a right-angled triangle are congruent to the hypotenuse and leg of another right-angled triangle, then the two (2) triangles would be congruent i.e ΔADB ≅ ΔCDB.

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Answer:

ΔADB ≅ ΔCDB                             HL.

AD ≅ CD                                    CPCTC.

Step-by-step explanation:

or what the  guy said on top :D

Answer:

Step-by-step explanation:

y=-4/7 x+6

slope=-4/7

slope of line perpendicular to it=-1\(-4/7)=7/4

reqd. line is y=(7/4)x+3

or

y=(7/4)x-3

Answer:

Yes he did break the speed limit

Step-by-step explanation:

If he stuck to the speed limit it would have taken him 6 hours to go 540 kilometers

If triangles 1 and 2 are similar then ratio of two sides is 25:52

A triangle is a polygon with edges and three terminals. It belongs to the basic geometric shapes. A triangle containing the angles A, B, and C is referred to by the term ABC.

Any three Euclidean points that are not collinear result in a triangle and a rectangle. In other words, any triangle is exclusively covered by that plane and is contained within that plane.

We know that any two triangles are similar by three axioms:

SSS , AAS , SAS or AAA axiom of similarity.

In the Euclidean plane, every triangle is contained within a single plane, but in higher-dimensional Euclidean spaces, this is no longer the case. This article addresses triangles in terms of geometry, more specifically the Euclidean plane, unless otherwise stated.

ratio of the sides of two triangle are in same ration when the triangles are similar

Now given ratio is 25:52, hence the ratio of the sides will be same.

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The sphere equation x^2 + y^2 + z^2 = 6z becomes:
ρ^2 = 6ρcos(φ)
The cone equation z = √(x^2 + y^2) becomes:
ρcos(φ) = ρsin(φ)
So, the solid lies within the region described by the inequalities:
ρ ≤ 6cos(φ) and ρcos(φ) ≥ ρsin(φ)
These inequalities, along with 0 ≤ θ ≤ 2π and 0 ≤ φ ≤ π, define the solid in spherical coordinates.

To describe the solid in terms of inequalities involving spherical coordinates, we first need to convert the given equations to spherical coordinates. In spherical coordinates, we have:

x = r sinθ cosϕ
y = r sinθ sinϕ
z = r cosθ

Substituting these values in the given equations, we get:

r² sin²θ cos²ϕ + r² sin²θ sin²ϕ + r² cos²θ = 6r cosθ
r cosθ = r² sin²θ cos²ϕ + r² sin²θ sin²ϕ

Simplifying these equations, we get:

r = 6 cosθ / (sin²θ cos²ϕ + sin²θ sin²ϕ + cos²θ)^(1/2)
r cosθ = r² sin²θ

Now, the solid lies inside the sphere x2 + y2 + z2 = 6z, which in spherical coordinates becomes:

r² = 6 cosθ

And the solid also lies outside the cone z = x2 y2, which in spherical coordinates becomes:

r cosθ >= r^4 sin^2(θ) cos^2(ϕ) + r^4 sin^2(θ) sin^2(ϕ)
r >= r^3 sin^2(θ) (cos^2(ϕ) + sin^2(ϕ))
r >= r^3 sin^2(θ)

Combining these inequalities, we get the description of the solid in terms of inequalities involving spherical coordinates:

r >= r^3 sin^2(θ) >= (6 cosθ)^(1/2)

This represents the solid that lies inside the sphere x2 + y2 + z2 = 6z and outside the cone z = x2 y2, in terms of inequalities involving spherical coordinates.

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The standard equation of user will be y = 625x²+1250x+5000

A function in mathematics from a set X to a set Y allocates precisely one element of Y to each element of X. The sets X and Y are collectively referred to as the function's domain and codomain, respectively. Initially, functions represented the idealized relationship between two changing quantities.

A connection or statement involving one or more variables is called a function.

From the graph we can find following equation:

(0,5000) ----------- 5000 = \(\frac{1}{4(f-k)}(0-h)^2 +k\)

(2,10000) ---------- 10000 = \(\frac{1}{4(f-k)}(2-h)^2 +k\)

(4,20000) --------- 20000 = \(\frac{1}{4(f-k)}(4-h)^2 +k\)

Solving the above three equations we will get following values:

h = -1

k = 4375

f = 10937501/2500

Hence the standard equation of user will be y = 625x²+1250x+5000

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The value of the additional data point is 36

To find the value of the additional data point, we can use the concept of the sample mean.

Given the data set: 23, 28, 20, 33, 42, 12, 19, 50, 36, 25, 19.

The sample mean of this data set is 26.5.

To find the value of the additional data point, we can use the formula for the sample mean:

(sample mean) = (sum of all data points) / (number of data points)

In this case, we have 11 data points in the original data set. Let's denote the value of the additional data point as x.

Therefore, we can set up the equation:

26.5 = (23 + 28 + 20 + 33 + 42 + 12 + 19 + 50 + 36 + 25 + 19 + x) / 12

Multiplying both sides of the equation by 12 to eliminate the fraction, we have:

318 = 282 + x

Subtracting 282 from both sides of the equation, we find:

x = 318 - 282

x = 36

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.

Answer:

721.54

Step-by-step explanation:

We have to convert the 2% given in the statement into a z-score, as follows:

P (X> x) = 2% = 0.02, P (Z> z) = 0.02

thus find z such that:

P (Z <z) = 1 - P (Z> z)

P (Z <z) = 1 - 0.02

P (Z <z) = 0.98

we look for what value of z corresponds to in the normal distribution table and it is 2.06

x = m + z * sd

m is mean and sd standard deviation, replacing:

x = 497 + 2.06 * 109

x = 721.54

721.54 would be the minimum score.

Answer:

Step-by-step explanation:

76

Answer:

34 degrees

Step-by-step explanation:

72+74= 146 180-146=34

The rose gold bracelets sold by Chantel's fine jewelry store are considered price elastic, as an increase in price resulted in an apparent increase in demand and sales.

Based on the information provided, Chantel raised the price of her rose gold bracelets by $75 to cover unexpected expenses. Surprisingly, she observed an increase in sales at the higher price point. This suggests that the rose gold bracelets are price elastic.

Price elasticity of demand refers to the responsiveness of the quantity demanded to changes in price. When a product is price elastic, an increase in price leads to a proportionately larger decrease in quantity demanded, resulting in a decrease in total revenue. Conversely, a decrease in price would lead to a proportionately larger increase in quantity demanded and total revenue.

This suggests that the demand for these bracelets is relatively elastic, meaning that customers are responsive to changes in price and perceive the higher price as an indicator of increased value, exclusivity, or quality.

Several factors may contribute to this phenomenon. The rose gold bracelets may have unique design elements or craftsmanship that customers are willing to pay a higher price for.

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The line passing through point (-5, -6) is y = -2x - 16.

Define Equation of line.

         y - y₁ = m (x - x₁)  

Given point is (-5, -6) and slope is -2.

We know the formula is,

 y - y₁ = m (x - x₁)  

Let, (x₁, y₁) = (-5, -6)

and, m = -2 (slope)

Now, plug in the value

y - (-6) = -2(x - (-5) )

y + 6 = -2(x + 5)

y + 6 = -2x - 10

y = -2x - 10- 6

y = -2x - 16

Hence, the line passing through point (-5, -6) is y = -2x - 16.

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l=         2a

           w

Step-by-step explanation:

there you go in the picture i created for you

Answer:

\(l=\frac{2a}{w}\)

Step-by-step explanation:

I am smart.

The correct option (a) 2000, is the miles are driven on each tire.

For the stated question-

Miles are driven on each tire = Total distance/number of tires.

Miles are driven on each tire = 10000/5

Miles are driven on each tire = 2000

Thus, the number of miles are driven on each tire is 2000 miles.

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In polar coordinates, the radial part of the Helmholtz equation is given by p^2 d²R(p)/dp^2 + p dR(p)/dp + (k²p² - m²) R(p) = 0. The possible solutions of this equation depend on the values of k and m. When k = 0, it reduces to the Laplace equation in two-dimensional polar coordinates, while m = 0 corresponds to the Laplace equation with rotational symmetry.

To obtain the radial part of the Helmholtz equation in polar coordinates, we consider the Laplacian operator ∇² expressed in terms of polar coordinates. Substituting this into the Helmholtz equation, we get p^2 d²R(p)/dp^2 + p dR(p)/dp + (k²p² - m²) R(p) = 0, where R(p) represents the radial part of the solution and k and m are constants.

The possible solutions of this equation depend on the values of k and m. When k = 0, the equation reduces to p^2 d²R(p)/dp^2 + p dR(p)/dp - m² R(p) = 0, which corresponds to the Laplace equation in two-dimensional polar coordinates.

For m = 0, the equation becomes p^2 d²R(p)/dp^2 + p dR(p)/dp + k²p² R(p) = 0, which represents the Laplace equation with rotational symmetry. In this case, the solution R(p) will have a form that exhibits rotational symmetry around the origin.

In summary, the radial part of the Helmholtz equation in polar coordinates is given by p^2 d²R(p)/dp^2 + p dR(p)/dp + (k²p² - m²) R(p) = 0. The possible solutions depend on the values of k and m, with k = 0 corresponding to the Laplace equation in two-dimensional polar coordinates and m = 0 representing the Laplace equation with rotational symmetry.

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According to recent data, women make up 34% and 26% of workers in science and technology (STEM) fields in Canada and the United States, respectively. The correct option is A. 34% and 26%.

According to recent data, women make up 34% and 26% of workers in science and technology (STEM) fields in Canada and the United States, respectively. This indicates that women are still underrepresented in STEM fields, despite the fact that there has been an effort to attract more women to STEM fields.

In both Canada and the United States, women have made significant progress in breaking down gender barriers in STEM fields. However, there is still work to be done to close the gender gap and increase representation of women in STEM fields.

Women's representation in STEM fields has increased in both Canada and the United States in recent years, but the percentage of women in STEM fields is still significantly lower than the percentage of men. More efforts are needed to close the gender gap in STEM fields and encourage more women to pursue STEM careers.

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Answer:

y=4

Step-by-step explanation:

\(\sqrt{5y-5} =\sqrt{4y-1} \\(\sqrt{5y-5} )^2=(\sqrt{4y-1} )^2\\5y-5= 4y-1\\5y-4y=-1+5\\y=4\\\)

The correct answer is B. The slope of a line will be a small positive number for a fairly flat upward-sloping line.

The slope of a line will be a small positive number for a fairly flat upward-sloping line. Slope measures the change in the y-value of a point on the line, divided by the change in the x-value. The formula for finding the slope is \(m = (y2 - y1) / (x2 - x1)\). A fairly flat upward-sloping line would have a positive slope, however it would be a small number since the line does not rise drastically. For example, if the x-values are 0 and 1 and the y-values are 1 and 2, then the slope would be m = (2 - 1) / (1 - 0) = 1, which is a small positive number.

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Answer:

6/8

Step-by-step explanation:

3/4 if we further multiply we get 6/8

Answer:

Step-by-step explanation:

\(3=\frac{a+r}{a-r} \\3a-3r=a+r\\3a-a=r+3r\\4r=2a\\r=\frac{1}{2} a\)

Answer:

the equation to use would be D (255-20(5) = ?). To solve, first multiply 20 and 5 and you would get 100 so the equation would be 255 - 100 = ? Then you would subtract 100 from the 255 to get $155 left. To solve for 7 weeks you would replace the 5 in the equation with 7 so your equation would be 255 - 20(7) = ? Next you would multiply 20 and 7 to get 140. the equation would then be 255 - 140 = ? Subtract 140 from 255 and you would get 115. So after 7 weeks she would have $115 left in her account.

Answer:

y = (1/4)x-1

y=\(\frac{1}{4}\) x - 1

Step-by-step explanation:

y=mx + b where m is the slope and b is the y intercept.

Just a quick look at the graph - - - the line is increasing, as x increases, y increases, so our slope should be positive.

We can see the y intercept is -1.

y=mx -1

m = slope = rise/run = (y2-y1)/(x2-x1)

Pick 2 points (any 2!) so we can find the slope.

(-4,-2) and (8,1)

slope = (-2-1)/(-4-8)

= -3/-12 = 1/4

y = (1/4)x-1