Solving a system of linear equations algebraically:

Solving A System Of Linear Equations Algebraically:

Answers

Answer 1

Answer:

x = 1

Step-by-step explanation (work shown in attached pictures):

1) You can find x by using the elimination method. First, multiply the second equation by -1 in order to make the coefficient of the y-term -1. This makes it so that when we add the two equations, the y-terms will cancel out, leaving the x-terms for us to solve.

2) Now, add the two equations together and cancel the two y-terms out. With the resulting equation, isolate x to find its values. So, the resulting answer is x = 1.  

Solving A System Of Linear Equations Algebraically:

Related Questions

1. What is a solution to this inequality?x + 5 s 13 * O 8 O9 O 11 O 12​

Answers

The answer is 8

Shehehevshehehvshevehed

what is h−(−2.22)=−7.851 someone please help me

Answers

Answer:

h=-10.071?

Step-by-step explanation:

Fred's car can travel 36.8 miles on one tank of gas. His gas tank holds 16 gallons. How many miles can Fred's car travel per gallon?What is the solution of the equation below? x+8.63=11.001

Answers

Answer:

Answer to Question 1: 2.3 miles per gallon

Answer to Question 2: x = 2.371

Step-by-step explanation:

Question 1 (explanation): 36.8 (miles on one tank of gas) / 16 (gallons of gas that Fred's car hold) = 2.3 (miles that Fred's car can travel per gallon)

Question 2 (explanation): 11.001 - 8.63 = 2.371

I hope this helps :)

$59.75 camera, 4% sales tax
please show in full detail

Answers

Answer:

The total cost would be: $62.14

Step-by-step explanation:

First convert the percent to a decimal, so since it is 4%, you move the decimal two places to the right, so it would be .04.

Next, multiply $59.75 x .04%.  This equals $2.39.

Then, take the product and add it to $59.75. So, $59.75 + $2.39.

This equals $62.14!


Find the 89th term of the arithmetic sequence 25, 35, 45, ...

Answers

Answer:

905

Step-by-step explanation:

arithmetic sequence are in form

a(n)=a(0)+d(n-1)

a(0)=25

common difference: d=35-25=10

a(n)=25+10(n-1)

a(89)=25+10(88)=905

Help please !
A rectangular paperboard measuring 22 in long and 14 in wide has a semicircle cut out of it, as shown below.
Find the area of the paperboard that remains. Use the value 3.14 for pi, and do not round your answer. Be sure to include the correct unit in your answer.

Answers

Answer:

231.07 in^2

Step-by-step explanation:

The radius of the semicircle is 14/2 = 7 in

22x14 - 3.14x(7^2)/2 = 231.07 in^2

Answer: 231.07 m^2

Step-by-step explanation:

Area of the remaining paperboard = Area of the entire paperboard - Area of semicircle

1. area of paperboard = l*b = 22*14 = 308 m^2

2. area of semi circle = 1/2 pi r^2 = 1/2*3.14*49/2

Therefore, area of remaining paperboard = 231.07 m^2

10x + 4y < 12
8x - 3y > 20

Answers

Answer:

I've attached a pic how the graph will look like

Answered by GAUTHMATH

What is the sale price of a bag of potato chips priced 4 and the sale 25% off?
A:$1.50 B:$2 C:$3 D:$2.50

Answers

Answer:

C: $3

Step-by-step explanation:

I think you're saying that the chips cost $4, so that's what I'm going with.

You can think of 25% as 1/4 of the whole. So if you divide 4 by 4, you get 1, so that means that 1/4 of the price is 1.

Now you can subtract 1 from 4 : 4-1= $3

Hope that helps!

What value of y makes the equation true?
-7/12 = y/-36
A -21
B 28
C -28
D 21

Answers

Answer:

D) 21

Step-by-step explanation:

y= -7/12× -36

or, y= -7×-3

or, y= 21

Answer:

D

Step-by-step explanation:

Given

[tex]\frac{-7}{12}[/tex] = [tex]\frac{y}{-36}[/tex] ( cross- multiply )

12y = 252 ( divide both sides by 12 )

y = 21 → D

more help pls! 3 and 4

Answers

Answer:

3. One Solution. (0,4). (they have different slopes and y-intercepts)

The solution can be found using elimination method:

Add the equations together

y = -x + 4

y = x - 4

2y = 0

y = 0

Solve for x

0 = x - 4

x = 4

(4, 0)

4. No solution

x + y = -2 and 3 which is not possible

The two lines would be parallel

Change 60% to fraction in its simplest form​

Answers

Answer: 3/5

Step-by-step explanation:

60% as a fraction is 60/100.

You can simplify 60/100 to 30/50 then simplify that further to 15/25 then using the 5 times tables you can simplify that to 3/5.

Please help! I don't know this!

( ( 163 ^ 2 ) ^ 2) * ( 0.045701 - 12 / 2 * 3.357470126 )

Answers

Step-by-step explanation:

{(163²)²} × (0.045701-12/2×3.357470126)

4330747×-20.0991198

8.70

Choose which scenario could be represented by the expression $14.99%

a) The cost if you purchase 14 t-shirts at a cost of x dollars each

b) The cost if you purchase x t-shirts at a cost of $14.99 each

C) The sum of 14.99 and x

d) T difference between 14.99 and x​

Answers

The answer will be B BECAUSE the cost of tshirts relates to x and it would be 14.99 which is represented by dollars

0.54 litres in cm ³​

Answers

Answer:

540 cubic centimeters

Step-by-step explanation:

just move 0 on the other side

Hey there!

0.54 liters to ________ cm³​

= 0.54 * 1,000

= 540

Therefore, your answer should be: 540 cm³​

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

What is 10+10

...........

Answers

laoshshdjdjdjdisjdhdhdj

Answer:

20

Step-by-step explanation:

Find the slope of the line that passes through (9, 8) and (4, 6).

Simplify your answer and write it as a proper fraction, improper fraction, or integer.

Answers

Answer:

Step-by-step explanation:

90

Answer:

it's 2/5 (0.4)

Step-by-step explanation:

y-y1

-------

x-x1

8-6

----

9-4

2

--

5 = 2/5 =0.4

70PTS HELP ME OUT 2)

Answers

How to be a baddie grrrrrrrrrrrrrr

Answer:

ABCD is a cyclic quadrilateral in the circle.which sum of two opposite angle is 180

48 is 12% of what number?

Answers

Answer:

I'm not sure but from my calculations,it is 400

Answer:

400

Step-by-step explanation:

In order to find out a percentage of something you divide the percent by 100 (12/100) to get a decimal, which would be 0.12. Now with this we already know 12% of something is 48 and in order to find what we took 12% from we divide 48 by 0.12.

48÷0.12 or 48/0.12 = 400

PRETTY PLEASE HELP ME! this is 4 a test and i’m rlly struggling :/

Answers

alright here we go
First we need to find the upper angle by doing 180 - 143 = 37. Because it’s a straight line.
Second we need to find angle ADC
a triangle has 180 degrees, and we have 38 and 37.
180 - (38+37) = 105
then we find what the question wants:
180 - 105 = 75 degrees

What is the measure of the angle that the ladder makes with the wall?

Answers

Answer:

30°

Step-by-step explanation:

The measure of angle the ladder makes with the wall = 180 - (the measure of angle the ladder makes with the ground + 90°)

Measure of angle the ladder makes with the ground = 180 - 120 = 60°

Therefore,

The measure of angle the ladder makes with the wall = 180 - (60 + 90°)

= 30°

Combine like terms and simplify the expression. 2 (x+ 2Y - 6)

Answers

Answer:

2x+4y-12

Step-by-step explanation:

2x+4y-12

Step-by-step explanation:

2(x+2y-6)

2x+4y-12

Hope it helps you

What is the perimeter of the rectangle in the coordinate plane? y 36 units 15 147 38 units 13+ 12+ 65 units 117 O 70 units ​

Answers

Answer:

38 units

Step-by-step explanation:

14 * 2 = 28

5 * 2 = 10

28 + 10 = 38

Mark me as brainliest, I am trying to level up.

the figure below shows a shaded rectangular region inside a large rectangle
(pic)
What is the probability that a point chosen inside the large rectangle is NOT in the shaded region ​

Answers

Answer:

42% i hope its right if not sorry

Step-by-step explanation:

Juan is participating in a 4 -day cross-country biking challenge. He biked for 61, 70, and 59 miles on the first three days. How many miles does he need to bake on the last day so that his average (mean) is 61 miles per day

Answers

oamgdoddddddddssdss nooooo

On what day of the year 2009 was the year 250 000 minutes old? Give the month and day?

Answers

[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]

22nd June

thanks hope it helps

The day that would be 250, 000 minutes old for the year 2009 would be:

22nd June

Find the day of the year

Given that,

No. of Minutes [tex]= 250, 000[/tex] minutes

We know that,

No. of minutes in an hour [tex]= 60[/tex] minutes

No. of hours in a day [tex]= 24[/tex] hours

So,

The number of minutes in a day [tex]= 24[/tex] × [tex]60[/tex]

[tex]= 1440[/tex] days

Now,

The number of days in 250, 000 minutes [tex]= 250,000/1440[/tex]

[tex]= 173.61[/tex] days

Beginning from January 1,

31(January) + 28(February) + 31(March) + 30(April) + 31(May) + 22(June)

= 173

∵ 22nd June as it's not a leap year.

Thus, the above response is correct.

Learn more about "Calendar" here:

brainly.com/question/4657906

PLEASE HEEEEELP,WILL GIVE BRAINLIEST
Also can you explain how you got your answer

Answers

when finding the bottom numbers, divide the top number by 3

when finding the top numbers,
multiply the bottom number by 3

21 / 3 = 7
12 X 3 = 36
20 X 3 = 60
90 / 3 = 30

answer: c

Answer:

The answer is c! 7,36,60,30

Step-by-step explanation:

To answer this equation you have   to find  a number that fits the description of what is required. It may seem difficult but it's not  first off it's trial and error  you have to find the right equation for every given number. For example,  what makes 15  equal 5  true? To make the equation true you have to do 15 divided by 3 equals 5  now we take the / 3 and apply them to all the other numbers  so 21 / 3 is  7 ,  36  divided by 3 is 12  hi, 60 / 3 is 20 ,  90 /3 is 30. If you have any other question like this all you have to do is trial and error with a number to make the equation true hopefully that helps! (B.t.w / symbol means divided by)

Guys I need help plz! ( it would mean a lot if u help )

Answers

Answer:

━☆゚.*・。゚X>6

Step-by-step explanation:

Here,X is greater than 6

Answer:

x > 6

Hope this helped <3

What’s the area of the shape?

Answers

Answer:

96

Step-by-step explanation:

triangle = (12 * 10)/2 = 60

square = 6*6 = 36

triangle + square = 96

Identify terms of 25x-7

Answers

Answer:

The terms are 25x and 7

Step-by-step explanation:

A classroom is arranged with 6 seats in the front row, 8 seats in the middle row, and 10 seats in the back row. The teacher randomly assigns seats to students as they enter the classroom.
What is the probability that the first student who enters the classroom will be assigned a seat in the front row?

Answers

Answer:

[tex] \frac{6}{24} \: or \: 0.25 \: or 25\%[/tex]

Step-by-step explanation:

First add them all up to get the total amount of seats.

6+10+8=24

there are 6 seats in the front row. so that means it will be

[tex] \frac{6}{24} [/tex]

24÷6=0.25

0.25×100=25%

Probability can be answered with a fraction, decimal or a percentage, they are all correct.

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