I really need help please

I Really Need Help Please

Answers

Answer 1

Valid row operations are:

6R₁+ R₂ → R₃-(1/2) R₁ → R₁R₁ ↔ R₂R₁ ÷ 2 → R₁2R₂ → R₂-1R₃+ R₂ → R₂2R₁ → R₂R₁ + R₂ → R₂

What are invalid row operations?

Invalid row operations are:

0R₁ → R₁ (this is equivalent to multiplying a row by zero, which is not a valid row operation)

R₃ ÷ 0 → R₃ (division by zero is undefined)

-2 ÷ R₁ → R₁ (division by a variable is not a valid row operation)

2R₁ + R₂ → R₂ (the row operation should be adding multiples of one row to another row, not a combination of multiple rows)

Find out more on valid row operations here: https://brainly.com/question/26320234

#SPJ1


Related Questions

where should the linear inequality y ≤ 1/4 x- 3 be shaded?

Answers

The required direction of the inequality is below the line.

How to find the direction of inequality in graph?

If you're not graphing a vertical line, the inequality's sign will tell you which half-plane to shade. Shade above the line when using the  or > sign. Shade below the line if the symbol or is used. Larger solutions are to the right and smaller solutions are to the left, respectively, for a vertical line.

According to question:

To check the direction, we will take points from the graph and put in the given inequality.

At point (2, 0)

y ≤ x/4 - 3

0 ≤ 2/4 - 3

0 ≤ -25

It is false

Again

At (2, -4)

y ≤ x/4 - 3

-4 ≤ 2/4 - 3

-4 ≤ -2.5

It is true,

Thus, we can say the direction of the inequality is below the line.

To know more about Inequality visit:

brainly.com/question/30239204

#SPJ1

A group of students worked out the mean and range of their ages. The mean was 12 years and 3 months. The range was 2 years and 7 months. a) What was the mean of the ages of the same group of students exactly one year later? b) What was the range of their ages exactly one year later? Write a sentence to explain each of your answers.

Answers

Exactly one-year later,

(a) Mean of the ages will be 13 years and 3 months.

(b) Range of the ages will be same 2 years and 7 months.

Part (a) : To find the mean of the ages of the same group of students exactly one year later, we add one year to each student's age and find the new mean.

New mean is : 12 years and 3 months + 1 year = 13 years and 3 months;

So the mean of the ages of the same group of students exactly one year later is 13 years and 3 months.

Part (b) : The range of their ages would still be 2 years and 7 months because we are adding the same amount to all of their ages, the difference between the youngest and oldest member of the group would remain the same.

Learn more about Mean here

https://brainly.com/question/31208836

#SPJ1

HELPPPPPPPPP GNG IM STURGGLING 100 POINTS

Answers

customers who purchased Mederac

my bike tire has a radius of 12 inches how much distance will i cover after 50 rotations​

Answers

Therefore , the solution of the given problem of unitary method comes out to be 50 tyre rotations, you will have covered around 376.99 inches (or about 31.41 feet).

What is a unitary method?

The well-known simple approach, real variables, and any crucial elements from the very initial And specialised inquiry can all be used to finish the work. Customers may then be given another chance to try the product in response. If not, significant impacts on our understanding of algorithms will vanish.

Here,

The circumference of the circle the bike tyre forms is equal to the distance travelled in one rotation of the tyre. The following formula determines a circle's circumference:

=> C = 2πr

where the mathematical constant is roughly equivalent to 3.14159 and r is the circle's radius.

Your bicycle tyre's radius in this instance is 12 inches. The tyre's circumference is as follows:

=> C = 2π(12) = 24π inches

You may easily calculate how far you will travel after 50 spins by multiplying the tyre's circumference by the number of turns:

=> Covered distance:  50 × 24π ≈ 376.99 inches

As a result, after 50 tyre rotations, you will have covered around 376.99 inches (or about 31.41 feet).

To know more about unitary method visit:

https://brainly.com/question/28276953

#SPJ9  

A soccer ball is kicked in the air off a 27.0-meter high hill. The equation h(t) = -2t^2 + 4t + 27 gives the approximate height h, in meters, of the ball t in seconds after it is kicked. Does the ball reach a height of 40 m?

Answers

The ball reaches a height of 40 meters at approximately 3.38 seconds after it is kicked.

To determine if the ball reaches a height of 40 meters, we can substitute h(t) = 40 into the equation and solve for t.

40 = -2t² + 4t + 27

Rearranging the terms, we get:

2t² - 4t - 13 = 0

We can solve for t using the quadratic formula:

t = [4 ± √(4² - 4(2)(-13))]/(2(2))

t = [4 ± √(176)]/4

t ≈ 3.38 or t ≈ -0.88

Since time cannot be negative, we can discard the negative solution. Therefore, the ball reaches a height of 40 meters at approximately 3.38 seconds after it is kicked.

To learn more about height click on,

https://brainly.com/question/30958568

#SPJ1

The square on the right is a scaled copy of the square on the left. Identify the scale factor. Express your answer as a whole number or fraction in simplest form.

Answers

The scale factor between a square of dimensions 7 by 7 and a scaled copy of dimensions 21/2 by 21/2 is 3/2 or 1.5.

We know that the dimensions of the square on the left are 7 by 7, and the dimensions of the square on the right are 21/2 by 21/2.

To find the scale factor, we can divide the dimensions of the square on the right by the dimensions of the square on the left

scale factor = (21/2) / 7

We can simplify this fraction by dividing both the numerator and the denominator by the greatest common factor, which is 7

scale factor = (21/2) / 7 = (21/2) * (1/7) = 3/2

Therefore, the scale factor is 3/2, or 1.5.

To know more about scale factor:

https://brainly.com/question/30215044

#SPJ1

use the standard normal distribution table to determine the percent of data less than

z= 1.67

The percent of the data less than Z = 1.67 is ?

Answers

Step-by-step explanation:

Look at the table for z = 1.67  

You have the wrong table.......the table you posted is for negative z-scores

for z -score = + 1.67 , the value is .9535    = 95.35 %

Read the paragraph and choose a sentence that describes it best. Because of the association with TERFs, many feminists have stopped identifying with radical feminism. Though some of their views may be similar to the original tenets of radical feminism, many feminists no longer associate with the term because they are trans-inclusive. TERF is not just transphobic feminism; it is a violent international movement that often compromises its feminist stances to partner with conservatives, with a goal to endanger and get rid of trans people, especially transfeminine people.

Answers

Explanation:

The paragraph explains how TERFs have alienated many feminists from radical feminism and why TERF is a harmful and anti-trans movement.

Some other possible sentences are:

The paragraph discusses the impact of TERFs on radical feminism and their transphobic and violent agenda.The paragraph analyzes why many feminists have distanced themselves from radical feminism due to TERFs and how TERFs are not true feminists but transphobes.

Find the areas of the trapezoids.

Answers

Answer:

Area = ½* height(a+b)

Where;

a=4units

b=8units

h=6units

Therefore Area= ½*6(4+8)

= ½*6*12

=36sq.un

Answer:

24sq²

Step-by-step explanation:

Area = ( b1 + b2) x h

          ---------------------

                     2

Area =   (8 + 4) x 6

          ---------------------

                     2

Area =     (12) x 6

          ---------------------

                     2

A = 72/2

A = 36

A = 1/2 * b * h

A = (1/2) * 4 * 6

A = (1/2) * 24

A = 12

36 - 12 = 24sq²

I hope this helps!

What is the solution of x=9y and 3y - 3x =24

Answers

Answer:

Step-by-step explanation:

The solution to the system of equations `x=9y` and `3y - 3x =24` can be found by substituting the value of `x` from the first equation into the second equation. This gives us `3y - 3(9y) = 24`, which simplifies to `-24y = 24`. Solving for `y`, we get `y = -1`. Substituting this value of `y` into the first equation, we get `x = 9(-1) = -9`. So the solution to the system of equations is `(x,y) = (-9,-1)`.

Is there anything else you would like to know?

Need help on question 20. Plsss help

Answers

The calculated distance between the tree and the zip line is 9.21 units

Evaluating the distance between the tree and the zip line

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

y = -6/7x + 7

This represents the zip line

Convert the equation to standard form

This gives

7y = -6x + 49

So, we have

6x + 7y - 49 = 0

This means that

A = 6, B = 7 and C = -49

From the point (6, 14), we have

x = 6 and y = 14

The distance between the tree and the zip line is then calculated as

[tex]d = \frac{|ax + by + c|}{\sqrt{a^2 + b^2}}[/tex]

By substitution, we have

[tex]d = \frac{|6 * 6 + 7 * 14 - 49|}{\sqrt{6^2 + 7^2}}[/tex]

This gives

[tex]d = \frac{85}{9.22}[/tex]

Divide

d = 9.21

Hence, the distance between the tree and the zip line is 9.21 units

Read more about distance at

https://brainly.com/question/28551043

#SPJ1

If the terminal point of 0 is (0, -1), what is tan 0?

A. Undefined
B. 1
C. -1
D. 0

Answers

The tangent function for the given terminal point is undefined.

The given terminal point of Θ is (0,-1). The tangent of an angle is defined as the quotient between the y-component and the x- component of the terminal point.

So, according to the question, tan Θ = -1/0. Hence, tan Θ is undefined as -1/0 is not defined.

Hence, tan Θ for the given function is not defined.

To learn more about tangent function click on:

https://brainly.com/question/21551278

#SPJ1

Are low elevation, high precipitation areas close or far from the ocean.

Answers

Answer:

low lying areas

What is the area of sector GHJ , given that θ=pi/4 radians. Express your answer in terms of pi and as a decimal rounded to the nearest tenth. Show your work.

Answers

The area of sector GHJ is:

3.125π cm² (in terms of pi)

9.8 cm² (As a decimal rounded to the nearest tenth)

How to find the area of sector GHJ?

The formula for area of a sector when the angle is in radians is:

A = (1/2) * r²θ

Where θ is the angle subtended at the center and r is the radius of the circle.

In this case, r = 5 cm and θ = π/4

Substituting:

A = (1/2) * 5² * π/4

A = 3.125π cm² (in terms of pi)

As a decimal rounded to the nearest tenth:

A = 3.125 * 22/7

A = 9.8 cm²

Learn more about area of sector on:

https://brainly.com/question/31126946

#SPJ1

(-6,-4), (0, -4), and (2,-4)

What is the equation of this line?

Answers

Answer: y = -4

Step-by-step explanation:

Based on these three given points, we can tell that this line is a horizontal line because there is no slope. All of the points have the same y-value, -4.

This means the equation of the line is:

       y = -4

See attached for a visual representation. I have graphed the given points over the top of the equation we wrote for the line.

The ordered pairs model an exponential function, where w is the function name and t is the input variable.

{(1, 60), (2, 240), (3, 960), (4, 3840)}

What is the function equation in sequence notation?

ANSWER: 60(4)t−1

just took the test

Answers

Answer: w(t) = 60 * 4^(t-1).

Step-by-step explanation:

The given ordered pairs model an exponential function of the form w(t) = ab^t, where w is the function name, t is the input variable, a is the initial value, and b is the growth factor.

From the first ordered pair (1, 60), we can see that the initial value a is 60. From the second and third ordered pairs (2, 240) and (3, 960), we can see that the output value is multiplied by 4 when the input value increases by 1. This means that the growth factor b is 4.

So, the function equation in sequence notation is w(t) = 60 * 4^(t-1).

Enter your answer, rounded to the nearest tenth, in the box.

Answers

Answer:

[tex]f(0) = 6.2 \sqrt{4.5} + 18 = 31.2[/tex]

a student score 80 on a test last week and 90 on thesame test this week. what is the percent increase in score

Answers

Answer:

12.5%

Step-by-step explanation:

We Know

A student scored 80 on a test last week and 90 on the same test this week.

What is the percent increase in the score?

We Tale

(90 ÷ 80) x 100 = 112.5%

Then we take

112.5 - 100 = 12.5%

So, the percent increase in score is 12.5%

Yes it’s 12.5% because you subtract 90 and 80 which gives you 10 then you divide 10 by 80 because 80 was the original price and times it by a 100 which gives you 12.5%

Find value of X and BD
Look at picture

Answers

The measure of length of x of the parallelogram is x = 2.36 units

Given data ,

Let the parallelogram be represented as ABCD

Now , the measure of lengths of the sides are

The measure of AB = 13x - 20

The measure of CD = 2x + 6

The measure of BC = 5x + 4

Opposite sides are parallel

Opposite sides are congruent

So , AB = CD

13x - 20 = 2x + 6

Subtracting 2x on both sides , we get

11x = 26

Divide by 11 on both sides , we get

x = 2.36 units

Hence , the parallelogram is solved and x = 2.36 units

To learn more about parallelogram click :

https://brainly.com/question/23488153

#SPJ1

A music app has a shuffle play function.
This function allows songs to be played in a random order without repeat.
Gabriella puts songs A, B and C on shuffle play.
List all the possible orders of songs A, B and C.
One has been done for you.
ABC,

Answers

Answer:ABC(Done for you)
ACB
BAC
BCA
CAB
CBA

Step-by-step explanation:

a cylinder candle has a diameter of 9 cm and a height of 12 CM. It is placed in a cylindrical box. there's a space of 0.5 CM between the candle and the box to allow for packaging material. what is the height of the cylindrical box?

Answers

If a candle having diameter as 9 cm, height as 12 cm is placed in a cylindrical box, then the height of the cylindrical box will be 13cm.

The "cylindrical-candle" diameter is given as = 9 cm;

The "cylindrical-candle" height is given as = 12 cm;

The candle is placed in a box which has a space of 0.5 cm between the candle and the box for packaging material;

which means that, there will an additional 0.5 cm in the top and bottom of the candle,

So, the height of the "cylindrical-box" is written as : 0.5 + 12 + 0.5;

Therefore, the "cylindrical-box" has a height of 13 cm.

Learn more about Cylinder here

https://brainly.com/question/23778806

#SPJ1

what is the area of a parallelogram if base is 1 1/4 mi and the heigh is 3/4 mi.

Answers

Answer:

Step-by-step explanation:

A=4

b Base

1

h Height

4

b

h

a

h

h

b

a

a

P

A

b

Solution

A=bh=1·4=4 hope helps  byee

Can someone please help with this question and break it down so I can learn a better way to do it.

Answers

Using trigonometry and the Pythagorean theorem, the length of the hypotenuse AC is found to be 3.5 cm, and using the Pythagorean theorem again, the length of BC is found to be approximately 1.75 cm.

Using trigonometry and the given angle and side length information, we can solve for the length of side BC (x).

We know that

sin(A) = opposite/hypotenuse

sin(30) = AC/7

AC = 7 × sin(30)

AC = 3.5 cm

Using the Pythagorean theorem, we have

BC² = AC² - AB²

BC² = (3.5)² - (7)² sin²(30)

BC² = 3.0625

BC = √3.0625

BC = 1.75 cm (rounded to two decimal places)

Therefore, the value of x is approximately 1.75 cm.

To know more about Pythagorean theorem:

https://brainly.com/question/14930619

#SPJ1

helpppppp pleaseeeee

Answers

When -3 (row 1) is added to row 2, the result would be [ 1 - 4 | 8 ]

[ 0 10 | 10 ].

How to add the matrix ?

The first thing to do is to multiply each element in row 1 by - 3 :

- 3 x 1 = - 3

- 3 x - 4 = 12

- 3 x 8 = - 24

Then, we need to add the result to the elements in row 2:

3 + ( - 3 ) = 0

- 2 + 12 = 10

10 + ( - 24 ) = - 14

The resulting matrix would therefore be:

[ 1 - 4 | 8 ]

[ 0 10 | - 14 ]

Find out more on matrices at https://brainly.com/question/26687738


#SPJ1

Rectangle ABCD and A’B’C’D’ are similar.

a. What is the scale factor from ABCD to

A’B’C’D’?

b. What is the scale factor from A’B’C’D’ to

ABCD?

Answers

Where Rectangle ABCD and A’B’C’D’ are similar.

a. the scale factor from ABCD to A’B’C’D’ is 1/2

b. What is the scale factor from A’B’C’D’ to  ABCD is 2

What is scale factor?

In mathematics, a scale factor is the ratio of matching measurements of an item to a representation of that thing. The copy will be bigger if the scaling factor is a full number. The duplicate will be smaller if the scaling factor is a fraction.

When the scale factor is less than one, you are going from big to small. You are dilating negatively.

When you are going from small to big, you scale factor is reversed. In this case, we had 1/2 in a, in b it became 2/1 which = 2.

Learn more about scale factor:
https://brainly.com/question/30215044
#SPJ1

Full Question:

Rectangle ABCD and A’B’C’D’ are similar.

a. What is the scale factor from ABCD to A’B’C’D’?

b. What is the scale factor from A’B’C’D’ to ABCD?

See attached image.

7.003x10^-5 in standard form​

Answers

Answer:

0.00007003 is the standard form of 7.003x10^-5. In scientific notation, the number is expressed as 7.003 multiplied by 10 raised to the power of negative five. To convert it to standard form, the decimal point has to move to the left by five places since the exponent is negative. The resulting number is a decimal with four zeros before the first nonzero digit. Standard form is a way of representing numbers that does not use exponents and is useful in comparing and performing operations on numbers.

James deposited $10,000 into an account that earns 5.5% compound interest, compounded semiannually. How much interest will James earn after 10 years?

Answers

Answer:

$17,204.28

Step-by-step explanation:

So first of all you want to start by finding what P, r and t would be.

P = Principal amount ($$)r = interest rate (%)t = time (years)

Once I found all of those I put them into the equation (l = Prt) and solved (by putting it into a calculator obviously). That is how I came up with my answer. Check the screenshot provided to see what P, r and t would be and to see all my work! :)

Hope this helps! :)

Have a great day!

Claude has a 10-pound package of hamburger meat and an
11.5-pound package of hamburger meat. Can he make the number of
hamburger patties shown? Choose Yes or No.
A. 87 1/4-pound hamburger patties
B. 45 1/2-pound hamburger patties
C. 30 1/2 -pound and 274-pound hamburger patties
D. 29 3/4 -pound hamburger patties

Answers

Answer: We can solve this problem by finding the total weight of the meat and then dividing by the weight of each patty to see if we can make the desired number of patties.

Let's add the weights of the two packages of meat:

10 + 11.5 = 21.5

For option A, we need 87 1/4-pound patties.

Each pound of meat will yield 4 patties of this size, so 21.5 pounds of meat will yield:

21.5 x 4 = 86 patties

Since we need 87 patties, Claude does not have enough meat for option A.

For option B, we need 45 1/2-pound patties.

Each pound of meat will yield 2 patties of this size, so 21.5 pounds of meat will yield:

21.5 x 2 = 43 patties

Since we need 45 patties, Claude does not have enough meat for option B.

For option C, we need 30 1/2-pound patties and 2 74-pound patties.

Each pound of meat will yield 2 patties of the smaller size and 1 patty of the larger size, so 21.5 pounds of meat will yield:

(21.5 x 2) + (2 x 1) = 43 + 2 = 45 patties

Since Claude only has 21.5 pounds of meat, he does not have enough for option C.

For option D, we need 29 3/4-pound patties.

Each pound of meat will yield 1.5 patties of this size, so 21.5 pounds of meat will yield:

21.5 x 1.5 = 32.25 patties

Since we only need 29.75 patties, Claude has enough meat for option D.

Therefore, the answer is Yes, Claude can make 29 3/4-pound hamburger patties.

find the inverse of f(x)=2^x+2
us the function odd, even, or neither?​

Answers

2/-4 have a good day

I know I asked this before but i need help asap

Answers

Answer:

15h-6k+12m

Step-by-step explanation:

The perimeter of the triangle is the sum of all of its side lengths

P=a+b+c

If a=5h-4k

b=10h+7m

c=5m-2k

Then the formula would be

P=(5h-4k)+(10h+7m)+(5m-2k)

P=15h-6k+12m

Hope this helps!

Other Questions
9. Which of the following functions represents a vertical shift of the function f(x) = x? a. f(x) = 2x b. f(x) = x + 5c. f(x) = x2 d. none of the above 9.____________________10. Which of the following functions represents a horizontal shift of the function f(x) = x2?a. f(x) = (x+2)2 b.f(x) = 3x2c. f(x) = x2 + 2 d. none of the above Solve the equation for x -4X+3=11 The difference between selling price and variable cost is called:. Suppose that the production of plastic creates a social cost which is depicted in the graph above. Without any government regulation, how much plastic will be produced? Compile the information you learned through the interviews with a federal employee and create a newspaper article, of no less than 500words, that describes your interview along with a slide show presentation that visually describes the importance of the federalgovernment in your community. A crime scene contains both the blood of the victim and the assailant. Which technique of biotechnology would be most appropriate for analyzing the blood?A. DNA cloning B. Light microscopy C. Electron microscopy D. Gel electrophoresis A taho vendor having lost control of his cart down a slight hill runs after it in an attempt to keep it from running into a concrete wall however he did not get there in time and the 100 kg cart crashes assuming that in its downhill run the cart got a final velocity of 2m/s and that the impact stopped the cart in 0.15s, (a) determine the change in the cart's momentum (b) estimate the average force that the wall exerts on the cart (neglecting the angle of the hill) (c) determine the direction of the impulse that acted on the cart A structural plate component of an engineering design must support 207 mpa in tension. If an aluminum alloy is used for this application, what is the largest internal flaw size that this material can support? assume the shape factor is 1 and that for aluminum kic = 25. 6 mpam and yield strength is 455 mpa Payton bought a 15-year treasury bond for a face amount of $700. The 2. 5% interest will becompounded quarterly. What will the future value of Patrick's investment be when he goes tocash it in on the maturity date 15 years from now? How do the wavelengths of ultraviolet light compare to those of visible light, infrared waves or radio waves? Ultraviolet light exhibits uniform supply accepted a $10,200, 90-day, 8% note from tracy janitorial on october 17. what entry should uniform supply make on january 15 of the next year when the note is paid? (assume reversing entries are not made.). (use 360 days a year.) multiple choice debit cash $10,404; credit interest revenue $204; credit notes receivable $10,200. debit cash $10,404; credit interest revenue $170; credit interest receivable $34; credit notes receivable $10,200. debit notes receivable $10,200; debit interest receivable $204; credit sales $10,404. debit cash $10,404; credit interest revenue $34; credit interest receivable $170; credit notes receivable $10,200. debit cash $10,404; credit notes receivable $10,404. Why is respect and love necessary ? The outermost layer of plant stems in dicotyledons consists of epidermal cells and guard cells that surround openings called stomata. The epidermal cells are usually covered with a waterproof layer that provides protection from injury and water loss. The stomata allow gas exchange. The epidermal cells and stomata have functions similar to those of which two human body systems?answer choicesA. Skeletal and respiratoryB. Cardiovascualar and skeletalC. Integumentary and respiratoryD. Cardiovascular and integumentary What is the probability that a student took AP Chemistry, given they did not get into their first-choice college? Enteryour answer as a decimal to the ten thousandths place.Student0.250.100.350.30Chemistry000PhysicsEnv SciBiology0.451st choiceNot 1st0.550.55 1st choice0.450.200.800.300.70Not 1st1st choiceNot 1st1st choiceNot 1stP(Chem and 1st choice) = (0 25)(0.45) = 0.1125P(Chem and Not 1st) = (0.25)(0.55) = 0.1375P(Phys and 1st choice) = (0.35)(0.55) = 0.1925P(Phys and Not 1st) = (0.35)(0.45) = 0.1575P(ES and 1st Choice) = (0.30)(0.20) = 0.0600P(ES and Not 1st) = (0.30)(0.80) = 0.2400P(Bio and 1st choice) = (0.10)(0.30) = 0.0300P(Bio and Not 1st) = (0.10)(0.70) = 0.0700 Need help on the stretch part URGENT HELP CHEMISTRY!! What does the hump in the middle of each energy diagram represent? (exothermic & endothermic diagrams) write a math sequence for this problem! lilah and her little brother max went to the beach they dug 290 seashells and 645 rocks how many rocks and seashells did max and lilah collect in all? Things like age, social class, past experiences, culture and education affect both the ____ and the ____ Fill in the blanks, final exam question! Part CThe rectangular sides of the treasure box will be cut from wooden planks59 feet long and foot wide. How many planks will Mr. Penny need so916that his 18 students can each construct one treasure box? Find an angle in each quadrant with a common reference angle with 306, from 0