WHO ANSWER'S THE FIRST WITH THE CORRECT ANSWER WILL GET FREE BRAINLIST!!!
Michiko claims that to solve the system of linear equations 15x + 8y = 1 and 21x + 4y = -13, instead of multiplying the second equation by –2 and then adding the equations, she could multiply the second equation by 2 and then subtract the second equation from the first equation. Which statement is correct?

A: Michiko is right for this system of linear equations, but her method will not work for other systems of linear equations.

B: Michiko is right for this system of linear equations, and her method will also work for other systems of linear equations.

C: Michiko is wrong because her method will give the opposite of the correct value for x for any system of linear equations.

D: Michiko is wrong because her method will give the opposite of the correct value for y for any system of linear equations.

Answers

Answer 1

Answer: B) Michiko is right for this system of linear equations, and her method will also work for other systems of linear equations

Hope this helped

Answer 2

Michiko is right for this system of linear equations, but her method will not work for other systems of linear equations, option A is correct.

What is Equation?

Two or more expressions with an Equal sign is called as Equation.

To solve the system of linear equations 15x + 8y = 1 and 21x + 4y = -13, Michiko suggests multiplying the second equation by 2 and then subtracting the second equation from the first equation.

Multiplying the second equation by 2 gives:

42x + 8y = -26

Now, subtracting the second equation from the first equation gives:

15x + 8y - (42x + 8y) = 1 - (-26)

Simplifying this equation gives:

-27x = 27

Divide both sides by 27

x=-1

we can substitute x = -1 into either of the original equations.

Using the first equation, we get:

15(-1) + 8y = 1

Simplifying this equation gives:

8y = 16

Dividing both sides by 8 gives:

y = 2

Hence, Michiko is right for this system of linear equations, but her method will not work for other systems of linear equations, option A is correct.

To learn more on Equation:

https://brainly.com/question/10413253

#SPJ7


Related Questions

What is the value of 2x and 3x?

Answers

the value of 2x is 44 degrees and the value of 3x is 71 degrees. same pattern just different angles!
The value of 2x and 3x is 5x

Dilbert's TV and Appliance discounts all televisions 6% to customers paying in cash. Rebecca paid $1,922.29 in cash and before tax for a 52-inch widescreen TV. What was the original price of the TV, not including tax?

Answers

Answer:

2,044.99 + Whaterver the tax percentage is. For example, if it's 8%, then you can do 2,044.99 x 1.08 to get your answer.

Step-by-step explanation:

Can someone please help:)

Answers

Answer:

False

Quadrant || contains ordered pairs of the form (Positive number, Negative number

The point (-6,0) is located on the y-axis  

The origin is located in Quadrant |.

True

The ordered pair (2,-5.2) is located in Quadrants IV.

To Plot points in Quadrant |||, move left and down from the origin.

Step-by-step explanation:

The ordered pair (2,-5.2) is located in Quadrants IV. True

True, because Quadrants IV contains order pairs of the form  of (+,-)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Quadrant || contains ordered pairs of the form (Positive number, Negative number False

False, because Quadrant || contains order pairs of the form (-,+)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The point (-6,0) is located on the y-axis  False

False, the abscissa or x-coordinate is −6 and the ordinate or y-coordinate is 0. We know, any point on the x-axis has the form (a,0) and any point on the y-axis has the form (0,a), where a is any number.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The origin is located in Quadrant |. False

Origin always in the middle.

We know, the origin is the point of intersection of the x-axis and the y-axis. That is, when x=0 and y=0, we get the origin.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

To Plot points in Quadrant |||, move left and down from the origin.  True

Starting at the origin then move left would give us to Quadrant || and then down would give us Quadrant |||.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Kavinsky

Answer:

True: The ordered pair (2,-5.2) is located in Quadrants IV.

To Plot points in Quadrant |||, move left and down from the origin.

False:

Quadrant || contains ordered pairs of the form (Positive number, Negative number The point (-6,0) is located on the y-axis The origin is located in Quadrant |.

Step-by-step explanation:

answer all 3 for brainliest

Answers

Answer:

πr + 2r

Step-by-step explanation:

Perimeter of Semicircle

The perimeter of a semicircle is the sum of the half of the circumference of the circle and diameter. As the perimeter of a circle is 2πr or πd. So, the perimeter of a semicircle is 1/2 (πd) + d or πr + 2r, where r is the radius.

Step-by-step explanation:

1. d = 22mm

circumference = πr + d

= 22/7 × 11 + 22

= 56.57 mm

2. r = 4 inches

circumference = πr + d

= 22/7 × 4 + 8

= 20.57 Inches

3. d = 10 yards

circumference = πr+d

= 22/7 × 5 + 10

= 25.71 yards

A room that is shaped like a trapezoid will be carpeted. The parallel sides of the room are 15 feet and 25 feet long. A segment perpendicular to these sides is 22 feet long.

The carpet will cost $5.20 per square foot.

How much will it cost to carpet the room?

Answers

A = (a+b)/2 h

A = (15+25)/2 * 22

A = 40/2 * 22

A = 440 square ft

440*5.2= $2,288 to carpet the room

Hope this helped

Help me and answer correctly please and I will mark you brainliest!!!

Answers

Answer:

D)rotation, reflection

Step-by-step explanation:

Rotation because the figure has rotated in a clockwise direction but since only rotation cannot be the correct answer, the figure has also been reflected after being rotated. Thus only option D is correct.

in 2014 the price of a forever stamp from the United States Postal Service was 0.49 how many forever stamps Can Alyssa buy for 30.38

Answers

She can buy 62 stamps. 30.38 cost/0.49 per stamp=62.

please help as soon as you can <3

Answers

Answer:

D

Step-by-step explanation:

The reason why it's D is because if you can see on the number line it repeats 1/8 once, 5/8 three times, 3/4 once.

Answer:

A is the answer.

Step-by-step explanation:

If you look at it closely, it has 1 x for 1/8, 2x's for 3/8, 3x's for 5/8, and 1 x for 3/4. I hope this helps!

heres another one pls help i need only one assignment for my grade to get to a B

Answers

Answer:

90

Step-by-step explanation:

angle f = 70 degrees and all the lines are equal (70 degrees)

90°-20°=70°

90 is the answer I took the test

Beinggreat78, Answer fast!

Answers

Answer:

[tex]I~am~here!!![/tex]

C. ⇒ 2 : 4. This is because 2 may be a multiple of 1, however, 3 is not a direct multiple of 4.

C. Because is 1:3 started with a 2 it would have to be 2:6 and 1:3 can not convert into 2:4

someone help me with this. i’ll give you brainlist or whatever just help

Answers

(-2,-1)
(-1,0)
(0,1)
(1,1)
(2,2)

Yes it’s linear

Hope this helped

50 POINTS GIVING BRAINLIEST I NEED HELP ASAP

Answers

Answer:

2. x=35 and x=105 z=180

Step-by-step explanation:

because equalateral

Find the measure of each interior angle of the regular polygon.

Answers

90’ ?
Not sure but hope ta right :)
Inside the polygon = 360 degrees.
There are 11 sides of the polygon.
So, 360/11 = 32.72 degrees.

English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office
Read Shakespeare's "Sonnet 19.” Devouring Time, blunt thou the lion's paws, And make the earth devour her own sweet brood; Pluck the keen teeth from...


English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office


English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office


English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office


English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office


English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office


English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office


English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office


English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office


English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office


English44 seconds ago
+45 pts
where was George Wesley Atkinson Dingbat Sworn into office

Answers

Sorry if it’s wrong

hurry please and check to maks=e sure its correct \
50 POINTS!!!

Answers

249.2
You have to use Pythagorean theorem to figure out the missing side of the rectangle then multiple all sides added to the triangle faces.

100 POINTS AND BRAINLY Consider the two dot plots below. Which of the following statements is true? A. Both the dot plots A and B have the same mean absolute deviation. B. The mean absolute deviation of dot plot B is greater than the mean absolute deviation of dot plot A. C. The median of dot plot B is greater than the median of dot plot A. D. The mean absolute deviation of dot plot A is greater than the mean absolute deviation of dot plot B. Reset Submit study island

Answers

Answer:

your answer would be D

Step-by-step explanation:

(っ◔◡◔)っ ♥ hello ♥

the median of both the dot plot A and B is the same

<3

i need more help on these questions please

Answers

Answer:

1,2,4,8,2

Step-by-step explanation:

For the first blank, it asks you to look at the change in y-value where the x-value changes from 0 to 1. As the y-value goes from 2 to 3 in this space, it is increasing by 1.

For the second blank, it asks you to look at the change in y-value where the x-value changes from 1 to 2. As the y-value goes from 3 to 5 in this space, it is increasing by 2.

For the third blank, it asks you to look at the change in y-value where the x-value changes from 2 to 3. As the y-value goes from 5 to 9 in this space, it is increasing by 4.

For the fourth blank, it asks you to look at the change in y-value where the x-value changes from 3 to 4. As the y-value goes from 9 to 17 in this space, it is increasing by 8.

For the fifth blank, it asks you to find the rate of change for the graph using the information we previously found. As you can see, the rate of change is 2 for this exponential function, as for every x-value increasing by 1, the change in y-value is multiplied by 2. In other words, if you look at the prior answers you can see that 1*2=2, 2*2=4, and 4*2=8, and all of these changes occur while the x-value increases consistently. Therefore, the grow factor is 2 for every interval of 1.

Hope this helps!

Identify the scatter plots as linear association, nonlinear association, or no association.



(WONT LET ME ADD THE 6TH IMAGE)

Answers

Answer:

1. Non-linear positive

2.Linear positvie

3. No association

4.Linear negative

5.Non-linear negative.

Step-by-step explanation:

If this answer helped may I get brainlest.

Answer b because how it’s formed

BRAINLIEST! THANK YOU< APPRECIATE YA

Complete this missing number problem.

N + (187 - 94) = 150
N + _ = 150
N = _

Fill in blanks

Answers

n+93=150

n=57

Question is in the image below!

Answers

Answer:

The answer is b

Step-by-step explanation:

The answer is A, hope this helps.

what fraction is equal to 4

A. 3/4
B. 2/4
C. 4/4
D. 4/1
E. 1/4

Answers

Answer:B

Step-by-step explanation:

its B because if u out 1/1 thats one whole number and if u have 4/1 then theres four whole numbers so it would be the same as just a normal 4

Answer:

It's D

Step-by-step explanation:

20 POINTS HEELP-
What is the solution to the equation x + 9.5 = 27.5?
answers
x = 2.9
x = 18
x = 20
x = 37

Answers

Answer:

x=18

Step-by-step explanation:

18 is the answer of you input the choices with 9.5 and add to see which equals 27.5 on a calculator it will be 18

A gift box has the shape of a rectangular prism. How much wrapping paper do you need to cover the​ box?

Answers

Answer:

the answer should be 160 in^3 because what you have to do is to multiply 16 times 7 times 15 and you will get 160 which is the answer.

Step-by-step explanation: I hope this is the right answer and please give me brainliest. Tell me if i got it right or not.

To get the answer you have to find surface area so you have to use the rectangular prism equation which is 2(l•w+l•h+w•h) then you can fill in with the numbers.
2( 16•15+16•7+15•7) after you can start solving
2(240+112+105)
2(457)
914
The answer should be 914. The other answer could have been correct if you were trying to calculate volume. Pls brainliest

In the diagram, lines r and s are parallel to each other and perpendicular to transversal line t. Line w is a transversal to lines r and s. Use properties of special angles, formed by parallel lines, perpendicular lines and their transversals, to describe the relationship between the angles. Choose all of the situations that correctly describe the relationship between the angles. Note: Figure is not drawn to scale.



s || r ; s ⊥ t ; r ⊥ t

line w is a transversal

m∠7=72°

10 and 14

(MULTIPLE CHOICE)
supplementary angles
The angles do not share a special relationship.
vertical angles
right angles
equal angles
alternate exterior angles
same side interior angles
alternate interior angles
corresponding angles

Answers

Answer:

Part 1)

Part 2)

Part 3)

Part 4)

Part 5)

Part 6)

Part 7)

Part 8)

Part 9)

Part 10)

Step-by-step explanation:

Part 1) Find the measure of angle 7

we know that

----> by corresponding angles

we have

----> given

therefore

Part 2) Find the measure of angle 4

we know that

----> by supplementary angles (form a linear pair)

we have

substitute

Part 3) Find the measure of angle 6

we know that

----> by alternate exterior angles

we have

therefore

Part 4) Find the measure of angle 1

we know that

----> by vertical angles

we have

therefore

Part 5) Find the measure of angle 16

we know that

----> by supplementary angles (form a linear pair)

we have

---> given

substitute

Part 6) Find the measure of angle 18

we know that

----> by alternate interior angles

we have

therefore

Part 7) Find the measure of angle 21

we know that

----> by alternate exterior angles

we have

therefore

Part 8) Find the measure of angle 10

step 1

Find the measure of angle 14

we know that

----> by supplementary angles (form a linear pair)

we have

substitute

step 2

we know that

---> sum of interior angles of a triangle

we have

substitute

step 3

Find the measure of angle 10

we know that

----> by vertical angles

we have

therefore

Part 9) Find the measure of angle 11

we know that

----> by supplementary angles (form a linear pair)

we have

substitute

Part 10) Find the measure of angle 12

see Part 8)

Step-by-step explanation:

Find the next 4 terms of the following arithmetic sequence:

-7,-5.5,-4,-2.5

Answers

Answer:

-1, 0.5, 2, 3.5

Step-by-step explanation:

1.5 is added to the previous value for each value of the sequence. -2.5+1.5 is -1; -1+1.5 is 0.5, etc.

Answer:

-1, 0.5, 2, 3.5

Step-by-step explanation:

y=x+1.5

Hope this helps! :D

Nicole and Ian generate two patterns. Nicole uses the rule multiply by 3 then add 2 starting with 1. Ian uses the rule add 1/2 then multiply by 2 starting from 0. Complete the table to show the numbers in each pattern. Then create the ordered pairs.

Answers

Answer:

Nicole: 1, 5, 17, 53, 161, 485

Ian: 0, 1, 3, 7, 15, 31

Pairs: 1,0- 5,1- 17,3- 53,7- 161,15- 485,31

Step-by-step explanation:

The coordinate pairs of Nicole and Ian's rule are (5,1),(17,3),(53,5),(161,10),(485,20)

What is coordinate?

A coordinate is a system that uses one or more number to show the position of the points. It is in (x, y) form where x shows value on x axis and y shows value on y-axis.

How to determine coordinates?

We have been given that Nicole's rule is multiplied by 3 then add 2 starting with 1.

Values of Nicole's rule are 5,17,53,161,485.

Ian's rule is given as add 1/2 then multiply y 2 starting from 0. The values will be:

1,3,5,10,20.

Hence the coordinates are (5,1),(17,3),(53,5)(161,10),(485,20).

Learn more about coordinates at https://brainly.com/question/17206319

#SPJ2

The border of a Susan B. Anthony dollar is in the shape of a regular polygon.

Just answer b:

b. What is the measure of each interior angle of the border? Round your answer to the nearest degree.
The measure of each interior angle is ° .

Answers

I'm not sure but I think this is the answer-
Inside of the polygon= 360 degrees.
Since there are 11 sides, divide 360/11.
That equals= 32.72 degrees.
That wud be the measure of each interior angle.
I hope I'm right :)

help me I'll give brainliest to the person who has the correct answer​

Answers

Answer:c in the habit of

Step-by-step explanation:

Hey there!


When you see or hear the word “accustomed” think of the person/speaker or question telling that it is another name for “Be prepared of something” or just simply think of the word “adaption”.


Another word for “adaption” or “adapt” is “habitation” aka “habitat”


Based on that information I gathered for you, the answer is “in the habit for” (Option C.) because it’s talking about the word “habitat”


Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

At the bottom is a completed addition problem with all the digits replaced by letters. Every letter represents a single digit and different letters represent different digits. Which digit might the letter T represent?
I WILL MARK BRAINLIEST!! Please answer asap

Answers

19 is the answer as t is the 19th letter of the alphabet

even more math cuz you know, i dont know it.

Answers

The measure of angle u is 101°. Angle u corresponds to angle y because they correspond in location. The Corresponding Angles Theorem states that if two parallel lines intersect a transversal, then the created corresponding angles are congruent. Helena might have thought that angles u and t were vertical angles.
the answer is 101 degrees because angles t & u are supplementary.

(im not good at explaining things so i drew a visual.)
Other Questions
Whats the prefix of cause to be ? A piece of dna that is used to carry a gene of interest into a cell is known as what?. what is complement of cot 30? find the area of the semicircle round your answer to the nearest hundredth. 2ft The following photo is of Northwestern Glacier at Resurrection Bay in southern Alaska. The glacial process which happens here is ____________ and creates _____________. whats -2( 20x + 2) = -36 Por favor me puedes decir el resumen dellibro de lo para normal de mario mendoza del capitulo 12 de las puertas del cielo What is the tone of the poem hanging fire PLS HELP In VPython, finish the code to draw a horizontal axis.origin = vector (0, 0, 0)axis = cylinder(pos=origin, axis=vector(________)options are (50, 0, 0), (0, 50, 0) and (0, 0, 50)its NOT (0, 50, 0) Which of the following was a union advantage during the civil war? question 5 options: heavy military support from great britain more experienced generals southern nationalism more soldiers and goods from factories step by stepshort answer please What is the measure of < B? please answer this question!!!! (not asking a question) im dropping out. At constant temperature, a sample of helium at 760. Torr in a closed container was compressed from 5. 00 l to 3. 00 l. What was the new pressure exerted by the helium on its container?. help helphelp helpe hwlp hwlp help me please :( I need this rlly badly no cap in the 1950's, the korean war threatened to what? What did the South Georgia often import in exchange for cotton i need help please !! Judging by countries such as the Soviet Union, China, Cuba, and North Korea, one area in which communist countries seem to be weak isa.the government.b.the courts.c.the bureaucracy.d.the economy.