49x3x7x1 = show your work

The matrix equations are solved as

a) The value of matrix X is   [tex]X = \begin{pmatrix}-2&0&4\end{pmatrix}[/tex]

b) The value of matrix X is  [tex]X=\begin{pmatrix}-5&1\end{pmatrix}[/tex]

What is multiplication of matrices?

The product of two matrices A and B is defined if the number of columns of A is equal to the number of rows of B. The first matrix must have the same number of columns as the second matrix has rows. The number of rows of the resulting matrix equals the number of rows of the first matrix, and the number of columns of the resulting matrix equals the number of columns of the second matrix

Given data ,

a)

Let the value of the matrix be X

Now , the equation is

[tex]2X = \begin{pmatrix}-4&0&8\end{pmatrix}[/tex]

Now , on simplifying the equation , we get

Divide by 2 on both sides of the equation , we get

[tex]X = \begin{pmatrix}-4&0&8\end{pmatrix} / 2[/tex]

Now , the value of matrix X is

[tex]X = \begin{pmatrix}-2&0&4\end{pmatrix}[/tex]

Therefore , the value of matrix X is   [tex]X = \begin{pmatrix}-2&0&4\end{pmatrix}[/tex]

b)

Let the value of the matrix be X

Now , the equation is

[tex]3X\:-\:\begin{pmatrix}1&7\end{pmatrix}=\begin{pmatrix}-16&-4\end{pmatrix}[/tex]

On simplifying the equation , we get

Adding  [tex]\begin{pmatrix}1&7\end{pmatrix}[/tex]  on both sides of the equation , we get

[tex]3X=\begin{pmatrix}-16&-4\end{pmatrix}+\begin{pmatrix}1&7\end{pmatrix}[/tex]

Now , the value for 3X can be calculated as adding the 2 matrices

[tex]3X=\begin{pmatrix}-15&3\end{pmatrix}[/tex]

Divide by 3 on both sides of the equation , we get

[tex]X=\frac{1}{3}\begin{pmatrix}-15&3\end{pmatrix}[/tex]

So , [tex]X=\begin{pmatrix}-5&1\end{pmatrix}[/tex]

Therefore , the value of matrix X is  [tex]X=\begin{pmatrix}-5&1\end{pmatrix}[/tex]

Hence , the matrix equations are solved as

a) The value of matrix X is   [tex]X = \begin{pmatrix}-2&0&4\end{pmatrix}[/tex]

b) The value of matrix X is  [tex]X=\begin{pmatrix}-5&1\end{pmatrix}[/tex]

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Answer:

The largest possible product of two positive integers whose sum is 9 is achieved when the two integers are as far apart as possible, which occurs when one integer is the largest possible integer and the other is the smallest possible integer. The largest possible integer is the one that is closest to but less than 9, which is 8, and the smallest possible integer is 1. The product of 8 and 1 is 8, so the largest possible product of two positive integers whose sum is 9 is 8.

Answer:

Step-by-step explanation:

Can You Please Send Me A Clearer Picture I Can Help

The answer for the equation is  x = 1 , y = 3.

Solve the following system: using elimination:

x + 5 y = 17 | (equation 1)

6 x - 5 y = -3 | (equation 2)

Swap equation 1 with equation 2:

6 x - 5 y = -3  (equation 1)

x + 5 y = 17  (equation 2)

Subtract 1/3 × (equation 1) from equation 2:

6 x - 5 y = -3 (equation 1)

0 x+(20 y)/3 = 20 (equation 2)

Multiply equation 2 by 3/20:

{6 x - 5 y = -9 | (equation 1)

{0 x+y = 3 | (equation 2)

Add 5 × (equation 2) to equation 1:

6 x+0 y = 6 (equation 1)

0 x+y = 3 | (equation 2)

Divide equation 1 by 6:

x+0 y = 1 | (equation 1)

0 x+y = 3 | (equation 2)

Collect results:

Answer: x = 1 , y = 3

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7) The minimum temperature is 31⁰F. So, the answer is option B.

The frequency of various types of values can be easily observed using a stem and leaf plot, also known as a stem and leaf diagram. This graph displays numerical data that is arranged in chronological order. There is a stem and a leaf for each piece of data.

Each first or second digit of the data value is divided into a stem, and the last digit is represented by a leaf, in a stem and leaf plot, which is represented by a particular table. The stem and leaf plot key is the "|" symbol that is used to indicate the values of the stem and the leaf. In the case of 46, the stem is 4 and the leaf is 6.

7) The minimum value in the stem is 3

And the minimum value in the leaf is 1

So, according to the given key 4|3=43°F

Here | denotes the key symbol.

So, in this solution the minimum value of stem is 3 and the minimum value of leaf is 1

Therefore, it must be 3|1

Hence, from the given key

This can be written as 31⁰F

Therefore, the answer is option B.

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39 is 0.3​% of 13,000.

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

Given:

let the number be x

So, 0.3% of x= 39

0.3/ 100 x= 39

0.3 x = 3900

x= 3900/ 0.3

x= 13000

Hence, 39 is 0.3​% of 13,000.

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Answer:

[tex]\sf P(B|A)=0.60[/tex]

Step-by-step explanation:

Given:

If events A and B are independent then:

[tex]\boxed{\begin{aligned} \sf P(A \cap B)&=\sf P(A)P(B)\\\sf P(A|B)&=\sf P(A)\\\sf P(B|A)&=\sf P(B)\end{aligned}}[/tex]

Therefore:

[tex]\implies \sf P(B|A)=P(B)=0.60[/tex]

Answer:

f(x) = x^3 - 7x + 1

Step-by-step explanation:

ƒ”(x)=6x ==> ƒ”(x)=6 * (x^1)

f'(x)=6/(1+1) * x^(1+1) + C  ==> C is a constant that doesn't affect the derivative

f'(x)=6/2 * x^2 + C ==> simplify the first derivative

f'(x)=3 * x^2 + C ==> f'(x)=3(x^2) + C

f'(-3)=3((-3)^2) + C  ==> plug in -3 into the derivative equation

f'(-3)=3(9) + C ==> simplify

20=3(9) + C  ==> plug in 20 for f'(-3)

20=27+C

20-27=27-27+C ==> solve for C

C=-7

f'(x)=3(x^2) + (-7)  ==> plug in -7 for C

f'(x)=3(x^2) - 7  ==> simplify

f(x) = 3/(2+1) * x^(2+1) - 7x + C

f(x) = 3/3 * x^3 - 7x + C

f(x) = x^3 - 7x + C

f(-3) = (-3)^3 - 7(-3) + C ==> plug in -3 into f(x)

f(-3) = -27 - (-21) + C

f(-3) = -27 + 21 + C ==> simplify

f(-3) = -6 + C

-5 = -6 + C  ==> plug in -5 for f(-3)

-5 + 6 = -6 + 6 + C ==> solve for C

C = 1 ==> simplify

f(x) = x^3 - 7x + 1

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                                             Incomplete question

There are two ways to represent this equation: "x + (x + 1) + (x + 2) = 42" and "(x minus 1) + x + (x + 1) = 42".

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign. A mathematical phrase with two equal sides and an equal sign is called an equation. An example of an equation is 4 + 6 = 10.

Here,

There are 2 ways,

x+(x+1)+(x+2)=42

(x-1)+x+(x+1)=42

This equation can be written as "x + (x + 1) + (x + 2) = 42" or "(x minus 1) + x + (x + 1) = 42," respectively.

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Answer:

(A) x + 3y - 10

Step-by-step explanation:

This Questions tests on the concept of solving algebraic expressions.

Eg. 7x + 4y + 3y + 9x = 16x + 7y

(Note that BODMAS rule applies to algebraic expressions as well.)

Given from the question:

5x + 8 - 13y - 4x - 18 + 16y

= 5x - 4x - 13y + 16y + 8 - 18 (Regroup the terms)

= x + 3y - 10 (A)

Answer: y=1/5x + b

Step-by-step explanation:

The slope intercept for the equation is y=mx +b

Your equation is already in the slope-intercept form!

Answer: 22

Step-by-step explanation:

f(x) = -5x + 2

Substitute the x for -4

f(-4) = -5(-4) + 2

f(-4) = 20+2

f(-4) = 22

Answer:

$7307

Step-by-step explanation:

you need to add them together okay got.

Answer: yes

Step-by-step explanation: there’s a pattern of 2, as we can see from the first equation. 5+2 is 7, so therefore the answer is yes.

Pan tool do the data analyst use to select the area on the map representing Finland.    

What is data analyst?

A data analyst is working with the world happiness data in table. To use Pan tool to select the area on the map representing Finland.

A data professional examines data to uncover critical insights about a company's consumers and how the data may be utilized to address problems. They also share this information with corporate executives and other stakeholders.

Pan allows us to shift the map to focus on it or present the areas in the way we wish. Simply pick the Pan Option and move the map around to suit your needs. Alternatively, you may move the map by holding down the Shift key.

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Answer:

b)  The mixed number seven and three fourths inches.

Step-by-step explanation:

Given:

To find the total length of the wood, sum the length of the picture and two margins:

[tex]\implies \sf Total\;length=6\frac{3}{4}+\dfrac{1}{2}+\dfrac{1}{2}[/tex]

Two halves equal 1:

[tex]\implies \sf Total\;length= 6\frac{3}{4}+1[/tex]

When adding a mixed number to a whole number, simply add the whole numbers together:

[tex]\implies \sf Total\;length= (6+1)\frac{3}{4}[/tex]

[tex]\implies \sf Total\;length= 7\frac{3}{4}[/tex]

Therefore, the total length of the wood required is:

Answer:

Step-by-step explanation:

To find which one is faster, it would be distance/speed.

40m/3 = 13.33 repeating

50m/4 = 12.5

You would be traveling faster at 40 miles in 3 hours since you are going at 13.33 miles per hour

Answer:

D

Step-by-step explanation:

Use a calculator to approximate [tex]\ln 28[/tex] to the nearest thousandth.

Answer:

(2,0)

Step-by-step explanation:

5x + 9y = 10

4x -3y = 8  If I multiple this second equation all the way through by 3, then the y's would cancel out when I add the equations together.

12x -9y = 24  multiplied the second equation through by 3

5x + 9y = 10  Add the 2 equations together

17x         = 34  Divide both sides by 14

x = 2

Plug 2 in for x for either of the two original equations and solve for y

5x + 9y = 10

5(2) + 9y = 10

10 + 9y = 10  Subtract 10 from both sides

9y = 0  Divide both sides by 0

y = 0

(2,0)

m<A = 112.5

m<B = 67.5

m<C = 67.5

m<D = 112.5

Consider the provided information.

The sum of all interior angle of a polygon is: (n-2)*180

Substitute n = 8.

(8-2)*180 = 1080

Thus, the measure of each angle is:

∠B and ∠C are congruent and their sum is 135°

∠B+∠C=135°

∠B=67.5°

Hence, the m angle B and m angle C is 67.5°.

The sum of all angles of a quadrilateral is 360°.

∠A+∠D+∠B+∠C=360°

∠A+∠D=360°-135°

∠A+∠D=225°

∠A and ∠D are congruent and their sum is 225°

∠A+∠D=225°

∠A=∠D=112.5°

Hence, the m angle A and m angle D is 112.5°.

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Match each of the expressions to the right point:

[tex]-\sqrt{18}[/tex] = c

[tex]-\frac{17}{3}[/tex] = b

[tex]-2\pi[/tex] = a

Answer:

Given below in the picture

I hope my answer helps you.

Answer: The distance between the points (3, 4) and (0, 0) is 5.

Step-by-step explanation: The Pythagorean Theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides. This theorem can be used to find the distance between two points in a coordinate system.

To find the distance between two points in a coordinate system, you can use the following steps:

Identify the coordinates of the two points.

Calculate the difference between the x-coordinates and the y-coordinates of the two points.

Use the Pythagorean Theorem to find the distance between the two points.

For example, to find the distance between the points (3, 4) and (0, 0), you would do the following:

Identify the coordinates of the two points: (3, 4) and (0, 0).

Calculate the difference between the x-coordinates and the y-coordinates of the two points: 3 - 0 = 3 for the x-coordinates and 4 - 0 = 4 for the y-coordinates.

Use the Pythagorean Theorem to find the distance between the two points: the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides, so the distance between the points is equal to the square root of 3^2 + 4^2 = 9 + 16 = 25 = 5.

Therefore, the distance between the points (3, 4) and (0, 0) is 5.

The area of ΔUVW is 21 units.

What is the area of the triangle?

The total area bounded by a triangle's three sides is referred to as the triangle's area. In essence, it is equal to 1/2 of the base times the height, or A = 1/2 b x h. As a result, we need to know the triangular polygon's base (b) and height (h) in order to calculate its area.

From given figure we can see that WV is the height of the triangle and WU is the base.

W = (-3, 6), V = (-3, -8) and U = (0, 6).

To find the distance WV and WU by using the distance formula.

[tex]d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}[/tex]

So,

[tex]WV = \sqrt{(-3+3)^2 +(-8-6)^2} = \sqrt{(-14)^2} = 14\\ WU = \sqrt{((0+3)^2+(6-6)^2} = \sqrt{3^2} = 3[/tex]

Hence, the height is 14 units and the base is 3 units.

⇒

Area of triangle = 1/2 x base x height

                           = 1/2 x 3 x 14

Area of triangle = 21 units

Hence, the area of ΔUVW is 21 units.

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Answer:

-4 = -6(r+3)

r+3 = 2/3

r = -1/2/3

Answer:

-6x²-x-6

Step-by-step explanation:

-7x²-1+x²-x-5

-6x²-1-x-5

-6x²-x-6

The angle is in 4th quadrant and the value of [tex]sin\theta[/tex] is -(4/5).

One of the most significant areas of mathematics, trigonometry has a wide range of applications. The study of the connection between the sides and angles of the right-angle triangle is essentially the focus of the field of mathematics known as "trigonometry." Therefore, employing trigonometric formulae, functions, or trigonometric identities can be helpful in determining the missing or unknown angles or sides of a right triangle. Angles in trigonometry can be expressed as either degrees or radians.

There are two other sub-branch classifications for trigonometry. The two varieties of trigonometry are as follows:

Everything is normal in Quadrant I, and Sine, Cosine, and Tangent are all positive.

However, the x direction is negative and the cosine and tangent become negative in Quadrant II.

Sine and cosine have negative values in Quadrant III.

Sine and tangent are negative in Quadrant IV.

since,

[tex]cos\theta = 3/5 (+ve)\\\ sin\theta\ is\ ( -ve)[/tex].

So the angle is in 4th Quadrant.

we know,

[tex]sin^{2}\theta + cos^{2}\theta = 1[/tex]

⇒ [tex]sin^{2}\theta = 1 - (\frac{3}{5}) ^{2}[/tex]

⇒[tex]sin^{2}\theta = 1 - \frac{9}{25} = \frac{16}{25}[/tex]

⇒ [tex]sin\theta = -\frac{4}{5}[/tex]     (since The angle is in 4th Quadrant)

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