need help asap please!

Need Help Asap Please!

Answers

Answer 1

Answer:

determinant: -15x = 3; y = 4; z = 1

Step-by-step explanation:

The matrix of coefficients has one row corresponding to each equation. The constants in that row are the coefficients of the variables in the equation. Coefficients are listed in the same order on each row. A missing term is represented by a coefficient of 0.

coefficient matrix, determinant

The first attachment shows the coefficient matrix and its determinant.

__

solution

The solution to the system of equations can be found by left-multiplying the constant vector by the inverse of the coefficient matrix.

  [tex]\textbf{A$\cdot$X}=\textbf{B}\\\\\textbf{X}=\textbf{A}^{-1}\cdot\textbf{B}[/tex]

This multiplication is shown in the second attachment. It tells us ...

  [tex]\textbf{X}=\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{c}3\\4\\1\end{array}\right][/tex]

Need Help Asap Please!
Need Help Asap Please!

Related Questions

What is the probability of the spinner stopping on an even number?

Answers

D. 5/10 ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

if x=0 and y<0, where is the plot (x,y) located

Answers

Mark me the Brainliest!

Answer:

The point will be plotted on Y axis

a.) Find h(g(x)) if
h(x)= 2x+9
and
g(x) = 4*

Answers

Answer:

h(4)=17

Step-by-step explanation:

h(g(x)), h(x)= 2x+9; g(x)=4

2(4)+9= 8+9=17

Please do both you get 100 points!!

Answers

#6

Sum of exterior angles of any polygon=360°

sides=6

Measure of one angle

360/660°

Option D

#7

4ft=1cm

32ft=32/4=8cm

and

60ft=60/4=15cm

Dimensions are 8cm and 15cm

Option B

Answer:

6.  d.  m∠YXZ = 60°

7.  b.  8 cm x 15 cm

Step-by-step explanation:

Question 6

∠YXZ is the exterior angle of a regular polygon

Exterior angle of a regular polygon = 360° ÷ number of sides

⇒ ∠YXZ = 360° ÷ 6

∠YXZ = 60°

Question 7

Scale  1 cm : 4 ft

Therefore, to convert actual dimensions in feet to sketch dimensions in centimeters, divide dimensions in feet by 4:

⇒ width = 32 ft

width = 32 ÷ 4 = 8 cm

⇒ length = 60 ft

length = 60 ÷ 4 = 15 cm

Therefore, the dimensions of the sketch are 8 cm x 15 cm

Two functions are given below. Make sure to explain!

Answers

Answer:

B. The graph of p is less steep than the graph of q.

Step-by-step explanation:

We can start by looking at each equation's y-intercepts, which are both -3/11, eliminating option A.

Next, we take a look at each equation's slope to see which is larger.

5/8 is 0.625 in decimal form. 8/5 is 1.6 in decimal form.

Therefore, q(x) has the larger slope, meaning the graph of p is less steep than the graph of q. (B.)

The side length of a square is 9 units. The square is reflected over the x-axis in the coordinate plane. What is the length of the side of the image? 0 10 -9 9

Answers

Answer:

9 units

Step-by-step explanation:

Reflections do not change the size of a shape, only dilations do. The side length will stay 9 units.

Your bathroom floor is a square with side lengths of 9 feet. (Area = s^2)
A contractor is tiling your bathroom with one-foot square tiles. How many tiles are needed for the job?

Answers

Answer: 81.

Step-by-step explanation: It is given that the side lengths are all 9 feet. Since the bathroom is a square, all the sides of the bathroom are 9 feet. You can use the formula (area = s^2). 9 x 9 is 81.

I'm to lazy to do this-

(image below)

plx do this correctly for brainly :D

also 20 points
:)

Answers

The probability that the lunch combo will have an ham sandwich is 3 / 7.

How to find the probability of Ham sandwich?

Probability simply means possibility. It describes how likely an event will occur or happen.

Mathematically,

probability = number of favourable outcome to A / total number of possible outcome

Therefore,

probability that a lunch combo will include a ham sandwich = 6 / 14 = 3 / 7

learn more on probability here: brainly.com/question/2773823

#SPJ1

Someone pls help me ASAP! Express the following as the sum of its partial fraction: 2x+4/x(x+2)(x-4)​

Answers

The sum of the partial fraction is [tex]\frac{2x + 4}{x(x + 2)(x -4)} = -\frac 12 + \frac{1}{2(x -4)}[/tex]

How to express as partial fractions?

The expression is given as:

[tex]\frac{2x + 4}{x(x + 2)(x -4)}[/tex]

As a partial fraction, we have:

[tex]\frac{2x + 4}{x(x + 2)(x -4)} = \frac Ax + \frac{B}{x + 2} + \frac{C}{x -4}[/tex]

Take the LCM

[tex]\frac{2x + 4}{x(x + 2)(x -4)} = \frac {A(x + 2)(x -4) +Bx(x -4) + Cx(x + 2)}{x(x + 2)(x -4)}[/tex]

This gives

2x + 4 = A(x + 2)(x -4) +Bx(x -4) + Cx(x + 2)

Expand

[tex]2x + 4 = A(x^2 - 2x - 8) + B(x^2 - 4x) + C(x^2 + 2x)[/tex]

Further expand

[tex]2x + 4 = Ax^2 - 2Ax - 8A + Bx^2 - 4Bx + Cx^2 + 2Cx[/tex]

Collect like terms

[tex]2x + 4 = Ax^2 + Bx^2 + Cx^2 - 2Ax - 4Bx + 2Cx - 8A[/tex]

By comparing the coefficients, we have:

A + B + C = 0

-2A - 4B + 2C = 2

-8A = 4

Divide both sides of -8A = 4 by -8

[tex]A = -\frac 12[/tex]

Substitute [tex]A = -\frac 12[/tex] in the other equations

[tex]-\frac 12 + B + C = 0[/tex]

[tex]B + C = \frac 12[/tex]

[tex]C = \frac 12 - B[/tex]

[tex]-2*- \frac 12 - 4B + 2C = 2[/tex]

1 - 4B + 2C = 2

- 4B + 2C = 1

Substitute [tex]C = \frac 12 - B[/tex] in - 4B + 2C = 1

[tex]- 4B + 2*\frac12 = 1[/tex]

- 4B + 1 = 1

Subtract 1 from both sides

-4B = 0

This gives

B = 0

Substitute B = 0 in [tex]C = \frac 12 - B[/tex]

[tex]C = \frac 12 - 0[/tex]

[tex]C = \frac 12[/tex]

So, we have:

[tex]A = -\frac 12[/tex], B = 0 and [tex]C = \frac 12[/tex]

The equation [tex]\frac{2x + 4}{x(x + 2)(x -4)} = \frac Ax + \frac{B}{x + 2} + \frac{C}{x -4}[/tex] becomes

[tex]\frac{2x + 4}{x(x + 2)(x -4)} = -\frac 12 + \frac{0}{x + 2} + \frac{1}{2(x -4)}[/tex]

Evaluate

[tex]\frac{2x + 4}{x(x + 2)(x -4)} = -\frac 12 + \frac{1}{2(x -4)}[/tex]

Hence, the sum of the partial fraction is [tex]\frac{2x + 4}{x(x + 2)(x -4)} = -\frac 12 + \frac{1}{2(x -4)}[/tex]

Read more about partial fraction at:

https://brainly.com/question/18958301

#SPJ1

What is 7 to the 2018th power

Answers

the anwser is 49 step by step

Answer: infinity

the answer should be infinity since the number 7 will have to be multiplied with itself 2018 times.

hope that helps....

function or not a function?

Answers

Answer:

function

Step-by-step explanation:

no repeated domain means its a function

Let u = {5,-12} and let c = -3. What is ll cu ll

Answers

Answer:

D) 39

Step-by-step explanation:

[tex]||\text{c}\bold{u}||=||3\langle5,12\rangle||=||\langle3*5,3*12\rangle||=||\langle15,36\rangle||=\sqrt{15^2+36^2}=\sqrt{225+1296}=\sqrt{1521}=39[/tex]

28 Jess bought a new car for £12 000.
In the first year the value of the car depreciates by 20%.
In the second year and the third year the car depreciates by 15%
Work out the value of the car after three years.

Answers

The value of the car after three years is £6936

How to determine the value of the car?

The initial value of the car is given as:

Value =  £12000

When the value depreciates by 20% after the first year, the new value of the car is:

New =  £12000 * (1 - 20%)

Evaluate

New =  £9600

When the value depreciates by 15% after the second year, the new value of the car is:

New =  £9600* (1 - 15%)

Evaluate

New =  £8160

When the value depreciates by 15% after the third year, the new value of the car is:

New =  £8160 * (1 - 15%)

Evaluate

New =  £6936

Hence, the value of the car after three years is £6936

Read more about depreciation at:

https://brainly.com/question/25297296

#SPJ1

Suppose f(x)=6x-2 and g(x)=2x+4. Find each of the following functions.

a. (f+g)(x)

b. (f-g)(x)

Need help guys

[tex] \tt \pink{nonsense = report}[/tex]

[tex] \tt \pink{correct = brainliest.\: heart. \: rate \: 5}[/tex]

Answers

Given : f(x) = 6x - 2 and g(x) = 2x + 4 .

Need To Find : Functions : (I). (f+g)(x) &, (II). (f-g)(x) .

(I) (f+g)(x)

[tex]\sf\quad\dashrightarrow \:\: \big(\:f\:+\:g\: \big)\:x\: \:\\\sf\quad\dashrightarrow \:f \big(x \big)\:+\:g \big(x \big)\:\:\\\sf\quad\dashrightarrow \: \big(6x-2 \big)\:+\: \big(2x+4 \big)\:\:\\\sf\quad\dashrightarrow \:6x-2\:+\:2x+4\:\:\\\pmb{\sf\quad\dashrightarrow \:8x \: +\: 2\:}\:\\[/tex]

(I) (f-g)(x)

[tex]\sf\quad\dashrightarrow \:\: \big(\:f\:-\:g\:\big)\:x\: \:\\\sf\quad\dashrightarrow \:f\big(x\big)\:-\:g\big(x\big)\:\:\\\sf\quad\dashrightarrow \:\big(6x-2\big)\:-\:\big(2x+4\big)\:\:\\\sf\quad\dashrightarrow \:6x-2\:-\:2x-4\:\:\\\pmb{\sf\quad\dashrightarrow \:4x \: -\: 6\:}\:\\[/tex]

Hello! :D can someone help me solve this system of equations in the picture

Answers

By identifying the intersection between the graphs, we conclude that the solution is (-3, 4).

How to solve the system of equations?

To graphically solve a system of equations, we need to graph the equations of the system in the same coordinate axis, and then find the intersection points between the graphs.

Here we already have the equations graphed, so we only should find the points of intersection.

We can see two red lines, we can see that the lines intersect at the point (-3, 4). This means that the solution of the system of equations is the point (-3, 4).

If you want to learn more about systems of equations:

https://brainly.com/question/13729904

#SPJ1

What is the equation of the line shown in this graph?

Answers

Answer:

x = -2

Step-by-step explanation:

Since this is a vertical line, the equation of the line will not be in y = mx+b form. The slope of the line is undefined. So, the equation will be x =.

To figure out what x equals, look at all the x values in the coordinates or look to see where it crosses the x axis, which is at -2.

The equation is x = -2.

In a window display flower shop, there are 3 spots for 1 plant each. to fill these 3 spots, emily has 6 plants to select from, each of a different type. selecting from the 6 plants, emily can make how many possible display arrangements with 1 plant in each spot?

Answers

Using the permutation formula, it is found that Emily can make 120 arrangements with 1 plant in each spot.

We are working with an arrangement, which means that the order in which the plants are inserted is important, hence the permutation formula is used to solve this question.

What is the permutation formula?

The number of possible permutations of x elements from a set of n elements is given by:

[tex]P_{(n,x)} = \frac{n!}{(n-x)!}[/tex]

In this problem, 3 plants are selected from a set of 6, hence the number of arrangements is given by:

[tex]P_{(6,3)} = \frac{6!}{3!} = 120[/tex]

More can be learned about the permutation formula at https://brainly.com/question/25925367

#SPJ1

medain of 38,42,77,47,74,51,48,41,82,72,74,129

Answers

Answer:

The median of 38, 42, 77, 47, 74, 51, 48, 41, 82, 72, 74, and 129 is 61.5.

Step-by-step explanation:

First, rearrange the data set in order.

38, 42, 77, 47, 74, 51, 48, 41, 82, 72, 74, 129

38, 41, 42, 47, 48, 51, 72, 74, 74, 77, 82, 129

Identify how many numbers are in the set. This will make it easier to infer the median.

Counting will show that this is a 12 number data set.

To find the median:

If there are an ODD amount of numbers in a data set, take the middle number. That is your median.

If there are an EVEN amount of numbers in a data set, take the middle two numbers, add them, then divide that by 2. That is your median.

Knowing this, take your middle two numbers, 51 and 72, and add them and divide by 2.

51 + 72 = 123

123/2 = 61.5

The median of this data set is 61.5.

What is the image of (12, -9) after a dilation by a scale factor of 1/3 centered at the origin

Answers

Answer:

(4,-3)

Step-by-step explanation:

The scale factor is 1/3. So, multiply the numbers by 1/3.

12*1/3 is 4.

-9*1/3 is -3.

The new coordinates are (4,-3).

Dale has $1,000 to invest. He has a goal to have $2,600 in this investment in 8 years. At what annual rate compounded continuously will Dale reach his goal?​

Answers

Answer:

11.94 %

Step-by-step explanation:

Compound interest formula     FV = PV e^(it)    i = decimal interest per year  

                                                                             t = time   FV = future value

2600 = 1000e^(i * 8)

  solve for i = 11.94 %

Evaluate function at the given value using the remainder theorem.

f(a)=a^4-2a^3-10a^2-7a at a=-2

Answers

Answer:

6

Step-by-step explanation:

[tex]f(a)=a^4-2a^3 -10a^2 -7a \\\\f(-2) = (-2)^4-2(-2)^3 -10(-2)^2 -7(-2)\\\\~~~~~~~~~=16-2(-8)-10(4)+14\\\\~~~~~~~~~=30+16-40\\\\~~~~~~~~~=46-40\\\\~~~~~~~~~=6[/tex]

2
3
4
5 6

8 9 10
What is the value of x in the equation 8x - 2y = 48, when y = 4
6
7
14
48

Answers

Answer:

x=7 ................................

The demand function for a christmas music cd is given by q=0. 6(3800-p^2)

Answers

The expression E(p) represents the elasticity at point p and by putting the known data we can find the value of elasticity.

What is a function?

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have a demand function:

q=0. 6(3800-p²)

Differentiate with respect to p:

[tex]\rm \dfrac{dq}{dp} = -1.2p[/tex]

We know the elasticity:

[tex]\rm E(p) = \dfrac{dq}{dp}\times\dfrac{p}{q}[/tex]

[tex]\rm E(p) =-1.2p \times\dfrac{p}{0.6(3800-p^2)}[/tex]

[tex]\rm E(p) = -\dfrac{2p^2}{(3800-p^2)}[/tex]

Here the data for p and q are not given, but we can find any value using the above expression by putting the known data.

Thus, the expression E(p) represents the elasticity at point p and by putting the known data we can find the value of elasticity.

Learn more about the function here:

brainly.com/question/5245372

#SPJ4

HELP ASAP....NO LINKS AND NO JOKES PLEASE

Which point represents one solution of the system of inequalities below

3x+8y<=480
y-x<=20

A. (50,50)

B. (40,40)

C. (20,60)

D. (10,40)

Answers

Answer: B. (40,40)

Explanation:

Given Inequalities:

(i) 3x + 8y ≤ 480

(ii) y - x ≤ 20

For first inequality:

(a) y intercept: (0, 60)

(b) x intercept: (160, 0)

Plot this line with a solid line and shade below.

For second inequality:

(a) y intercept: (0, 20)

(b) x intercept: (-20, 0)

Plot this line with a solid line and shade below.

The point (40, 40) falls between these two inequalities.

solve the inequality h/3 >8
which means h divided by 3 less than 8

PLS HELP
THANKS

Answers

Answer:

h>24

Step-by-step explanation:

multiply both sides by 3 to get ride of the denominator:

h>24

A scale model of a rectangular plot of land is 13 inches long by 12 inches wide. If the actual length of this plot is 780 feet, what is its actual area, in square feet?

A) 9360
B) 121,680
C) 406,080
D) 561,600

Please explain step-by-step

Answers

By finding the scale factor of the model, we will see that the area is 561,600 square feet.

How to find the area of the plot of land?

On the model, the length is 13 inches, and the actual length is 780 ft, then the scale factor is:

k = (780ft)/(13 in) = 60 ft/in

This means that each inch in the model is equal to 60ft in the actual plot of land.

Then the width is:

W = (12in)*( 60 ft/in) =  720 ft

And the area is the product between length and width, so we have:

A = (780ft)*(720ft) = 561,600 ft²

Then the correct option is D.

If you want to learn more about area:

https://brainly.com/question/24487155

#SPJ1

Please help meeeeeee thank youuu

KJ and GH
FG and KF
FI and GH
FI and JH

Answers

The lines that best represent perpendicular lines are: D. FI and JH.

What are Perpendicular Lines?

Perpendicular lines are lines that meet at a right angle, that is, the point of their intersection forms a right angle.

From the image given, lines FI and JH intersect at point I, and also appears to form a right angle.

Therefore, the lines that are perpendicular in the image are: D. FI and JH.

Learn more about perpendicular lines on:

https://brainly.com/question/1202004

#SPJ1

What is the area of a circular pizza with a radius of 9 cm? b. 28.3c * m ^ 2 od. 1017.9c * m ^ 2 c. 254.5c * m ^ 2 a. 56.5c * m ^ 2

Answers

Answer:

254.5 cm²

Step-by-step explanation:

area = πr²

area = 3.14159 × (9 cm)²

area = 254.5 cm²

I need help finding the length of the apothem! We have to round one decimal place.

Answers

Answer: 5.2

The apothem angle is 360/10, which is 36.

Therefore, we have tangent 36  = 3.8/a

And solving for a, we find that it is 5.2

Factor out 1/6 out of 1/6x -7/6

Answers

Answer:

(x-7)

Step-by-step explanation:

(1/6)*(x-7)= (1/6)x-(7/6)

Other Questions
in your own words, explain what friction is Craig went bowling with $25 to spend. he rented shoes for $5.00 and paid $4.00 for each game. What was the greatest number of games he could have played? A. 5B. 7C. 6D. 4 The most abundant element in the atmosphere can also be found in?white sugar and soy protein.fruits and hydrogenated oils.carbonated water and glucose.beans and whey protein. How is this narration presented in the film adaptationof The Most Dangerous Game"?The film relies on the setting to show the trap ratherthan using dialogue to explain it.ReThe film extends the general's dialogue into a longspeech where he explains his past.The film has Rainsford explain about the trap in hisdialogue with his female companion.The film cuts out all dialogue about the trap anduses visuals to show how the trap works When consumers start searching for ways to satisfy needs, their internal search is characterized by A. consulting close friends and families before expanding the search to a wider, external group. B. the influence of advertising. C. looking through the internal records of a firm, often found on the company website. D. examining personal memories and knowledge. E. using the Internet to find what other consumers feel about a specific product or service. What does the word pertinent mean based on the context clues provided? 11. Find the total surface area.4 in.6 in.2 in. The quadratic function graphed has a range of y 23.O TrueFalse Which expression correctly represents "ten times the difference of a number and six"? What questions about human culture does this work prompt? During the Cold War, two superpowers (US and USSR) vied for nuclear supremacy. Has the collapse of the Soviet Union increased or decreased the threat of nuclear war? Explain. What is the probability that the spinner lands on an even number or on the unshaded section? one-fifth two-fifths three-fifths four-fifths You deposit $1600 in a bank account. Find the balance after 3 years for each of thefollowing situations:The account pays 2.5% annual interest compounded monthly.The account pays 1.75% annual interest compounded quarterly.The account pays 4% annual interest compounded yearly. I am sometimes called your "windpipe." When you breathe.air travels through me to your lungs. What am I? QuestionWhich of the following factors can affect the strength of electric or magnetic fields? (YOU MAY SELECT MORE THAN ONE ANSWER Please answer now!!! An object is moving across a surface, but it does not gain or lose speed. Which best describes the objects force?The net force is positive.The net force is zero.The positive force is greater than the negative force.The negative force is greater than the positive force. 6. If b>6, then 3b + 3 could beA. 18B. 19C. 20D. 21E. 22 b divided by 7-12=8What is b? Explain any two factors that affect the pressure at a point inside a liquid