How to solve a equation using elemination method

Answers

Answer 1

Answer:

Below.

Step-by-step explanation:

I assume you are referring to a system of equations.

Example:

2x - y =  4

x + y =  5

If we add these 2 equations then the y is eliminated because -y + y = 0:-

3x + 0 = 9

x = 3

Now we plug x = 3 into the first equation to find y:

2(3) - y = 4

-y = 4 - 6 = -2

y = 2.

If we cannot eliminate one of the variables we multiply one of the equations so that one of the variables so that it can be eliminated.

For example:

2x - 3y = 5       A

x  + y  =  6        B

We multiply the second equation B by 3 so that when we add -3y + 3y gets eliminated:

3x + 3y = 18

- so adding this to equation A

5x + 0 = 23.

In some cases we may have to multiply both equations by different values to get terms that can be eliminated.


Related Questions

find the length and width of a rectangle whose
Length is 5cm longer than it’s width
Whose area is 50cm

Answers

Step-by-step explanation:

width= x (let)

length= x+5

Area=50 cm

Now ,

area = l ×b

50 = (X×X+5)

50 = (2X + 5)

50÷ 2= X+5

25 -5 = X

X=20

LENGTH = X+5

20+5

=25

Please i really need help!

Answers

Answer:

21.25=4.25

Ms. Diaz buys 5 pounds of strawberrys

Step-by-step explanation:

!!!!! determine the function being differentiated, and the number at which its derivative is being evaluated. Where possible, evaluate the limits using differentiation.

Answers

Recall that the derivative of a function f(x) at a point x = c is given by

[tex]\displaystyle f'(c) = \lim_{x\to c} \frac{f(x) - f(c)}{x - c}[/tex]

By substituting h = x - c, we have the equivalent expression

[tex]\displaystyle f'(c) = \lim_{h\to0} \frac{f(c+h) - f(c)}h[/tex]

since if x approaches c, then h = x - c approaches c - c = 0.

The two given limits strongly resemble what we have here, so it's just a matter of identifying the f(x) and c.

For the first limit,

[tex]\displaystyle \lim_{h\to0} \frac{\sin\left(\frac\pi3 + h\right) - \frac{\sqrt3}2}h[/tex]

recall that sin(π/3) = √3/2. Then c = π/3 and f(x) = sin(x), and the limit is equal to the derivative of sin(x) at x = π/3. We have

[tex](\sin(x))' = \cos(x)[/tex]

and cos(π/3) = 1/2.

For the second limit,

[tex]\displaystyle \lim_{a\to0} \frac{e^{2a} - 1}a[/tex]

we observe that e²ˣ = 1 if x = 0. So this limit is the derivative of e²ˣ at x = 0. We have

[tex]\left(e^{2x}\right)' = e^{2x} (2x)' = 2e^{2x}[/tex]

and 2e⁰ = 2.

The top four teams in a local tournament move onto the playoffs. if 7 teams enter the tournament how many different
combination of teams can make it to the playoffs?

Answers

Using the combination formula, it is found that 35 different combination of teams can make it to the playoffs.

What is the combination formula?

[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by:

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

In this problem, 4 students are taken from a set of 7, hence the number of combinations is given by:

[tex]C_{7,4} = \frac{7!}{4!3!} = 35[/tex]

More can be learned about the combination formula at https://brainly.com/question/25821700

#SPJ1

Y’all pls help I’m gunna cry

Answers

Median = 59
First Quartile = 57
Third Quartile = 62

State the various transformations applied to the base function f(x)=|x| to obtain a graph of the function g(x) = |x| − 2.

Horizontal shift of 1 unit to the right and a vertical shift upward of 2 units.


Horizontal shift of 1 unit to the right and a vertical shift downward of 2 units.


Horizontal shift of 1 unit to the left and a vertical shift downward of 2 units.


Horizontal shift of 1 unit to the left and a vertical shift upward of 2 units.

Answers

Horizontal shift of 1 unit to the left and a vertical shift downward of 2 units.

Transformation of function

Transformation technique is a way of changing the position of an object on an xy-plane.

Given the parent function of a modulus function f(x) = |x|, the graph of the function g(x) = |x| - 2 shows a vertical translation of the parent function down by 2 units.

The resulting graph of the translated function is as shown below

Learn more on translation here: https://brainly.com/question/1046778

#SPJ1

i need help with the area only for 7 8 and 9

Answers

We will get the areas of each one of the given triangles:

7) A = 12.69 mm²

8) A = 19.21 in²

9) A = 16.81 yd²

How to get the area of the given triangles?

7) First, we have an equilateral triangle, where all the sides measure 5.4mm

For an equilateral triangle of side length S, the area is:

[tex]A = \frac{\sqrt{3} }{4}S^2[/tex]

In this case, S = 5.4 mm, replacing we get:

[tex]A = \frac{\sqrt{3} }{4}(5.4mm)^2 = 12.62 mm^2[/tex]

8) Now we have two equal sides and one different. The general area of a triangle of base B and height H is:

A = B*H/2.

In this case, the base measures 3.4 in.

To get the height, let's divide the triangle into two right triangles, such that one cathetus is 3.4in/2 = 1.7 in.

The hypotenuse measures 5.9 in

And the other cathetus is the height of the triangle.

Then, by using the Pythagorean theorem, we see that the height is:

[tex]H = \sqrt{(5.9 in)^2 - (1.7in)^2} = 5.65 in[/tex]

Then the area of this triangle is:

[tex]A = (3.4 in)*(5.65 in)/2 = 19.21 in^2[/tex]

9) Here the base measures 8.2 yds, and the height 4.1 yds, so the area is just:

[tex]A = (4.1 yd)*(8.2 yd)/2 = 16.81 yd^2[/tex]

If you want to learn more about triangles:

https://brainly.com/question/2217700

#SPJ1

How many lines of symmetry does this figure have?
1
2
4
3

Answers

The number of lines of symmetry for the given figure will be 4.

What is symmetry?

Symmetry is described in geometry as a balanced and proportionate likeness between two halves of an object.

As we know that similarity is defined as when the image is divided into two halves and one portion is completely overlapped by the other.

So in the given figure, the figure can be divided into two halves by drawing four lines along with the arrows and along with the corners. In all cases, the two halves overlap with the other.

Therefore the number of lines of symmetry for the given figure will be 4.

To know more about similarities follow

https://brainly.com/question/26836817

#SPJ1

Khamisi and Harut wrote down two different functions that have the same rate of change. Khamisi's function is represented by the table shown below. x y -1 -5 1 -1 3 3 Write an equation, in slope intercept form, that could be Harut's function.

Answers

The equation of line is x+2y+3=0.

What is a equation of the line?

The standard form of equation of a line is ax + by + c = 0. Here a, b, are the coefficients, x, y are the variables, and c is the constant term. It is an equation of degree one, with variables x and y.

Given:

x:-1  -5  1

y:-1  3  3

So,

m= 3-1/-5-(-1)

m= 2/-4

m=-1/2

Now, equation of line

(y-(-1))= m (x-(-1))

y+1= -1/2(x+1)

2y+2=-x-1

x+2y+3=0

Hence, the equation of line is x+2y+3=0.

Learn more about equation of line:

https://brainly.com/question/21511618

#SPJ1

Help me calculate
I think it's 35, is that right?​

Answers

The value of the [tex]\rm 6x^5y^3[/tex] is 35 if the value of [tex]\rm 2x^2y = 5[/tex] and [tex]\rm 3x^3y^2 = 7[/tex]

What is an expression?

It is defined as the combination of constants and variables with mathematical operators.

We have:

[tex]\rm 2x^2y = 5\\\\\rm 3x^3y^2 = 7[/tex]

We have to find the value of [tex]\rm 6x^5y^3[/tex]

[tex]=\rm 6x^5y^3\\\\= \rm 6(x^2y)(x^3)(y^2)[/tex]

=6(5/2)(7/3)

= (5)(7)

= 35

Thus, the value of the [tex]\rm 6x^5y^3[/tex] is 35 if the value of [tex]\rm 2x^2y = 5[/tex] and [tex]\rm 3x^3y^2 = 7[/tex]

Learn more about the expression here:

https://brainly.com/question/14083225

#SPJ1

Give the prime factorization of 28.

Answers

2x2x7 is the answer you want

HUGE POINTS
PLEASE ANSWER
BE INFORMATIVE AS POSSIBLE
Question:
A parallelogram fencing area is to be constructed for a general swimming pool area. The total perimeter of the parallelogram fence is 220m. If one of the lengths is 50m, determine the dimension of the other length and draw it out.

If you want more information let me know

Answers

Answer:

The other length is 60m.

Step-by-step explanation:

If you look at the shape of a parallelogram, you will see that a parallelogram has two parallel sides. So, if the total perimeter is 220m, then 50m and 50m together would be 100m, so 220- 100= 120m left to fill in both sides left. so, 120÷2= 60m. 60m is the other length.

here is the histogram of a data distribution. All class widths are 1.
what is the median of the distribution?

Answers

The median of the data is 5 if the all class widths are 1, option (C) is correct.

What is the median?

A median is a middle number in a series of numbers that have been arranged to lift, and it might be more informative of the set of data than the average. When there are extremes in the sequences that might affect the average of the numbers, the median is sometimes employed instead of the mean.

In the histogram, 15 data values are given:

1, 2, 2, 3, 3, 3, 4, 5, 6, 6, 7, 7, 7, 8, 9

The mid-value is 5 which is on the 8th place

Thus, the median of the data is 5 if the all class widths are 1, option (C) is correct.

Learn more about the median here:

brainly.com/question/21396105

#SPJ1

Simplify −45(30x−40)+(42x+4) . Write your answer in factored form.

Answers

solution

-4(327x-451)

Factorize the following perfectly:
1) 9x^4-16y^439
2) 64x^4+y^4

Answers

Answer:

neither can be factored any further but if it is (9x^4) - (16y^4) it can be factored down to ((3x^2)+(4y^2)) ((3x^2)+(4y^2))

Step-by-step explanation:

A 6-inch personal pizza has 570 calories. Determine the number of calories in the 14-inch pizza. Round your answer to the nearest calorie.

Answers

Answer:

  3103 calories

Step-by-step explanation:

We presume the number of calories is proportional to the area of the pizza. The ratio of areas is the square of the ratio of the linear dimensions, so the number calories in the larger pizza is ...

  (14/6)² × 570 calories = 3103 1/3 calories

There are about 3103 calories in the 14-inch pizza.

Submit the answers to the checkpoint questions in the text box with the Lesson Review.
Part A Checkpoint
Directions: Complete each of the following questions.
(PICTURE FOR THE FIRST QUESTION)

1. Indicate the kind of energy represented in each example below:
a. Burning fuel in a car
b. Exploding an atomic bomb
c. Current moving in a wire
d. Tires sliding on pavement when brakes are applied
e. Football player running for a touchdown

2. All forms of energy except nuclear fission come from the _________.



3. Energy is ______________.

Answers

its that one dudee!!!!!

Natalie wants to use a sheet of fiberboard 30 inches long to create a skateboard ramp with a 28 angle of elevation from the ground

Answers

Answer:

You should raise one side 14 inches

Step-by-step explanation:

I used a right angle triangle calculater at this sight

https://www.calculator.net/right-triangle-calculator.html

A brand of cereal had 1.2 milligrams of iron per serving. Then they changed their recipe so they had 1.8 mg of iron per serving.

Answers

Using it's concept, it is found that the percent increase in the amount of iron per serving was of 50%.

What is the percentage increase of a value?

It is given by the increase divided by the initial value, and subtracted by 100%.

In this problem:

The initial value is of 1.2 mg.The increase was of 1.8 mg - 1.2 mg = 0.6 mg.

Hence the percent increase is given by:

P = 0.6/1.2 x 100% = 50%.

More can be learned about percentages at https://brainly.com/question/10491646

#SPJ1

through: (-3, 4), slope
1
4

Answers

Answer:

y = (-1/4)x + (13/4)

Step-by-step explanation:

The general structure of an equation in slope-intercept form is:

y = mx + b

In this form, "m" represents the slope and "b" represents the y-intercept.

Remember that in a point (-3,4) you have an "x" and "y" value. As such, you have been given values for the "x", "y", and "m" variables. Therefore, you can plug these values into the general structure to find the value of "b".

y = mx + b                              <---- General structure

y = (-1/4)x + b                         <---- Plug (-1/4) in "m"

4 = (-1/4)(-3) + b                      <---- Plug in values from point

4 = (13/4) + b                          <---- Multiply (-1/4) and -3

(13/4) = b                               <---- Subtract (13/4) from both sides

Now that you know the value of "m" and "b", you can determine the formula.

y = (-1/4)x + (13/4)

can anyone help? Need expert advice

Answers

Answer:

C (3,6)

Step-by-step explanation:

So the zeroes are the points that the loop goes through on the x-axis

so three and six

A biologist started with a population of 1,000 bacteria that doubled in size every day.
Which equation and graph show the number of days, d, as a function of the population
p, in thousands?

Answers

Answer: C. [tex]p = 2^{d}[/tex]

Step-by-step explanation:

The population rises exponentially, so the graph will have to go up. It also means the population is doubled directly in relation to days

what types of angles are in these quadrilaterals iready level d

Answers

Based on the quadrilaterals given, the types of angles that we see are Acute and Obtuse.

Which angles are shown in these quadrilaterals?

Acute angles are those that are less than 90° and these are shown in the trapezium quadrilateral.

Obtuse angles are higher than 90° and so are drawn outwards as seen in the parallelogram.

Find out more on acute angles at https://brainly.com/question/6979153.

#SPJ1

1. Using the above
scatterplot, does there
seem to be a positive
correlation, a negative
or no
correlation,
correlation between
the number of
customers and sales?

Answers

Answer:

yes there is a correlation

Step-by-step explanation:

here's how I found this by looking up all key words.

Please help me 35 points and Brainliest if your right

Answers

Answer:

y = - 2 | x - 2 | + 4

Step-by-step explanation:

the general equation of an absolute value function is

y = a|x - h| + k

where (h, k ) are the coordinates of the vertex and a is the stretch factor

here (h, k ) = (2, 4 ) , then

y = - 2|x - 2| + 4

Answer:

See below ~

Step-by-step explanation:

Formula for absolute value function :

y = a |x - h| + k

==============================================================

Given :

⇒ a = -2

⇒ Vertex = (h, k) = (2, 4) [based on graph]

=============================================================

Solving by substitution :

y = -2|x - 2| + 4

how do we solve this I need a quick answer please :)

Answers

Sorry don't no the answer

sorry if I kwon the answer

I telling u the answer

Answer: D ; 1,230

Explanation: Key word, boundary. Meaning its perimeter of the field. Find the perimeter then multiply by 3. inches

Please only 5 and 6 that all i need help with is area

Answers

Answer:

5) 22.95

6) 21.93

Step-by-step explanation:

Area of Triangle = BxH/2

= CxH/2

The correct answer is B

2. Draw a diagram to show that 5(x + 2) = 5x + 10.

Answers

Step-by-step explanation:

5(x+2)
1. Distributive property
2. Multiply
(5*x) + (5*2)
(5x)+(10)
Remove parenthesis

5x+10 ;

Therefore, 5(x+2) = 5x+10

Hopefully this helps! :3

The formula for converting C to F is C =
5(F-32)
9
where F is the temperature in °F and C is the temperature in °C.
Find F when C= 28°.

Answers

Answer:

f=82.4

Step-by-step explanation:

f=9c/5+32

f=9x28/5+32

f=252/5+32

f=50.4+32

f=82.4

Find the volume of cone pictured below. Use 3.14
for T. Round your answer to the nearest
hundredth.
8 yd
8 yd

Answers

8 yards is the answer
Other Questions
Kyle wants to buy a television on a hire purchase agreement. the cash price of the television is R5600. she is required to pay a deposit of 15% and pay the remaining loan amount off over 24 months at an interest rate of 14% p.a. what are kyles monthly repayment? keep your answer to the nearest rand. Graph the system of equations on graph paper to answer the question.y =2/7x-7y=-x+ 2What is the solution for this system of equations?Enter your answer in the boxes. HELPP Ms. Bennett is a 77-year-old patient who broke her hip in a recent fall. She lives alone and will need assistance with activities of daily living (ADLs) after her discharge from the hospital following surgery to repair the broken hip. As a member of the multidisciplinary team providing care for Ms. Bennett, you must make a decision regarding the best option for Ms. Bennetts post-discharge care According to the drafters of the Declaration of Independence, what is onereason the king made it difficult for people to acquire land?A. To prevent the population of the colonies from growingB. To preserve land that could serve as battlegroundsC. To help the farms in the colonies that were run by the BritishprosperD. To ensure that the colonists relied on trade for food Find the volume of the rectangular pyramid. If needed round two decimal places 1.4.2 Test (CST): Computer-Scored Unit TestQuestion 4 of 25A scientist did an experiment to see what type of water people preferred. Shehypothesized that most people would prefer bottled water. She did a blindtaste test with 500 people and put her results in the table below.Number of peoplewho preferredbottled waterNumber of peoplewho preferred tapNumber of people who couldnot taste the differencebetween bottled and tap waterwater Your password has 3 letters and 3 digits. no repeats are allowed. how many different passwords exist? 1. Explain how healthy behaviors and choices can positively affect your health status and how unhealthy behaviors and choices will negatively affect your health status. (10 points)2. Compare a time when one of your peers influenced healthy behavior to a time when a peer has influenced unhealthy behavior in your life. (10 points) how is gardening fun? in a paragraph no less than 10 lines How does his estimate compare to the actual product? Its a good estimate. The actual product is 35. Its a good estimate. The actual product is 40. Its a bad estimate. The actual product is 60. Its a bad estimate. The actual product is 120 Solve the following equation algebraically: Negative 16 = 16 x squared How many solutions does this equation have? Explain. a. Negative 1 = x squared; One solution because only -1 will satisfy the equation. b. Negative 1 = x squared; No real solution because there is no real number that, when squared, produces -1. c. 1 = x squared; Two solutions because the square root of 1 is positive 1 and negative 1. d. 1 = negative x squared; One solution because only -1 will satisfy the equation. is a penny saved worth anything Which choice best defines the two basic types of tectonic plates found on Earth?Atlantic plates and Pacific platesoceanic plates and continental platesboundary plates and transform platesmid-ocean ridge plates and low-ocean ridge plates Use the definition of division to write the division problem as a multiplication problem, then simplify.6/0= Read the excerpt from "A Genetics of Justice by Julia Alvarez. Periodically, Trujillo would demand a tribute, and they would acquiesce. A tax, a dummy vote, a portrait on the wall. To my father and other men in the country, the most humiliating of these tributes was the occasional parade in which women were made to march and turn their heads and acknowledge the great man as they passed the review stand. If you did not march, your cdula would not be stamped, and without a stamped identification card, you could do nothing; in particular, you could not obtain your passport to leave the country under the pretext of wanting to study heart surgery. This was the second escapethis time with his whole familythat my father was planning. The day came when my mother had to march. The parade went on for hours in the hot sun until my mother was sure she was going to faint. Her feet were swollen and hurting. The back of her white dress was damp with sweat. Finally when she thought she could not go one more step, the grandstand came into sight, a clutter of dress uniforms, a vague figure on the podium.Which statement best analyzes how the author develops the central idea across the paragraphs?A. Alvarez traces how Trujillo demanded the tributes, how her family reacted, and how it was finally her mothers turn to pay tribute.B. Alvarez describes how her family reacted to Trujillos demands and how that affected their lives when they left the Dominican Republic.C. Alvarez retells her mothers humiliating experience of paying tribute to a dictator she did not support.D. Alvarez describes how Trujillos mandatory taxes and tributes affected her mother in a negative way. Drag the tiles to the correct boxes to complete the pairs.Two parallel lines, a and b, cut by a transversal, forming 2 groups of 4 angles. Starting at top left of line a and moving clockwise, angles are 1, 2, 4, 3. Starting at top left of line b and moving clockwise, angles are 5, 6, 8, 7.In the figure, line a and line b are parallel. Based on the figure, match each given angle with its congruent angles.angles congruent to 1angles congruent to 2angles congruent to 7angles congruent to 63,7,6arrowRight3,7,2arrowRight4,8,5arrowRight3,6,2 What does the Map show?*1 pointCaptionless ImageThe partition of Germany into Soviet and democratic occupation zones after WWIIThe effects of the Holocaust and Zionism in EuropeThe results of the domino theory and the growth of Asian satellite statesAll of the above PART A : describe different ways a pendulum system loses energy over time.PART B: if there were no energy losses what does the law of conservation of energy say the pendulum system would do over time? 1. According to the stability-diversity hypothesis, why are tropical rain forests stable communities?Obecause they have high species richnessObecause they have extreme climatesObecause they have very little rainfallbecause they have low species richness please answer asap!!!A timer is started and a few moments later a model airplane is launched from the ground. Its height (in feet) as a function of time (inseconds after the timer was started) is given by the equation h (t) = -(t-14) +74 Which of the following statements is true?O The airplane reaches its minimum height of 14 feet in 74 seconds.O The airplane reaches its minimum height of 74 feet in 14 seconds.O The airplane reaches its maximum height of 14 feet in 74 seconds.O The airplane reaches its maximum height of 74 feet in 14 seconds.912 13 14 15 16 1718Next10 11