Solve the system by elimination
2x – y=1
x + 3y – 4= 0

Answers

Answer 1
Did it step by step , hope it helps !
Solve The System By Elimination2x Y=1x + 3y 4= 0
Answer 2

The value of x and y  for the given equation by elimination method are 1 and 1 respectively.

Elimination method for solving the system of equations;

The elimination method is the process of eliminating on of the variables in the system of linear equations using the addition or subtraction methods in conjunction with multiplication or division of coefficients of the variables.

According to the given question

We have two equations

[tex]2x -y =1...(1)[/tex]

[tex]x+3y-4=0...(2)[/tex]

Multiply equation (1) both the sides by 3

[tex]6x - 3y =3...(3)[/tex]

Adding equation (2) and (3)

[tex]6x+-3y+x+3y -4 =3\\7x =7\\x =1[/tex]

Substitute

x =1,  in either 2x -y =1 or x + 3y -4 =0

2(1) - y =1

⇒ -y = 1 -2

⇒ -y = -1

⇒ y =1

Hence, the value of x  and y is 1 and 1 respectively.

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Related Questions

can someone please help me find out what LN and KN is

Answers

Answer:

LN= 3,9

KN=-2,9

Step-by-step explanation:

its that answer because on the number lime L is 3 and N is 9 and K is -2


2 math question please help me 30 point

Answers

Answer:

1. B: 12 BB 18 FB,, 2.

Step-by-step explanation:

1. make the equation (198 + 33x) + 24x = 882 because there are a certain number of each ball (x) and 6 more footballs. since each football is 33 dollars, you do 33 x 6 which is 198, and then keep 33x and 24x. It is all equal to 882 since that is the final price. First, you subtract 198 on each side and combine the like terms (33x + 24x). Now it is 684= 57x and you divide 684 by 57, which equals 12. That means that there are 12 basketballs and 12 + 6 footballs, which is 18.

2. You cannot solve the problem or do any problem without distributing first. I'm unsure how else to explain it.

Which statement below is true about the
measurement 308.40 lb ?
A) It is precise to the nearest 0.01 lb and
accurate to 5 significant digits.
B) It is precise to 5 significant digits and
accurate to the nearest 0.01 lb.
C) It is precise to the nearest 0.1 lb and
accurate to 4 significant digits.
D) It is precise to 4 significant digits and accurate to the nearest 0.1 lb.
E) None of the above.

Answers

Answer:

the correct answer is d

If the coordinates of point E are (-4, y), what is the value
of y?
O -8
O -4
O0
O8

Answers

-4 of course .........

The value of y is -8

What is slope of the line?

"The slope of tee line passing through points [tex](x_1,y_1),(x_2,y_2)[/tex] is [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]"

What is y-intercept?

"The point at which the graph intersects the Y-axis."

What is slope intercept form of the line?

"y = mx + c, where m is the slope of the line and c is the Y-intercept."

For given question,

We have been given the graph of a line.

From the graph, we can observe that the line is passing through the points (4, 4) and (-6, 0)

Using slope formula the slope of the line would be,

[tex]\Rightarrow m=\frac{4-(-6)}{4-0}\\\\\Rightarrow m=\frac{10}{4}\\\\\Rightarrow m=\frac{5}{2}[/tex]

Also, the line intersects y-axis at y = 2

This means the y-intercept is c = 2

Using the slope-intercept form of the line the equation of the line would be,

[tex]y=mx+c\\\\y=\frac{5}{2}x+2[/tex]

Point E(-4, y) lies on the given line.

So, this point satisfies the equation of the line.

[tex]\Rightarrow y=\frac{5}{2}(-4)+2\\\\ \Rightarrow y=-10+2\\\\\Rightarrow y=-8[/tex]

Therefore, the value of y is -8

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Jesse uses the function f(x) = 0.25x + 20 to calculate her phone bill each month, in dollars, where x is the number of minutes she uses. What does 0.25 represent?​

Answers

Answer:

c hope this helps!

Step-by-step explanation:

Juan's meal costs $15.35. He leaves a 25% . Find the total cost of the meal

Answers

Answer:

$19.19

Step-by-step explanation:

15.35 x 0.25 = 3.8375

15.35 + 3.8375 = 19.1875

Rounded it will be $19.19

An equation for the line whose slope is 4 and which passes thorough the point (-5,3)

Answers

Answer:

y = 4x + 23

Step-by-step explanation:

[tex]y-y_{1}=m(x-x_{1} )\\y-3=4(x-(-5))\\y-3=4(x+5)\\y-3=4x+20\\y=4x+23[/tex]

The equation of the line is required.

The equation of the line is [tex]y=4x+23[/tex]

Equation of line

[tex]m[/tex] = Slope of line = 4

Point = [tex](-5,3)[/tex]

[tex]x_1=-5[/tex]

[tex]y_1=3[/tex]

Equation of a line is given by

[tex]y-y_1=m(x-x_1)\\\Rightarrow y-3=4(x-(-5))\\\Rightarrow y-3=4x+20\\\Rightarrow y=4x+20+3\\\Rightarrow y=4x+23[/tex]

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Pls explain how you got the answers

Answers

Answer:

1. 2.64172

2. 9.94194

3. 76.2

4. 10.9728

5. 49.2126

6. 443.603

7. 402.336

8. 259.08

9. 328.084

10. 7.57082

11. 7.25748

12. 55.1156

13. 127

14. 22.7125

15. 189.598

Step-by-step explanation:

1. liters to gallons 1:0.264172

10 L = 2.64172 gal.

2. kilometers to miles 1:0.621371

16 Km = 9.94194 mil.

3. inches to centimeters 1:2.54

30 in = 76.2 cm

4. yards to meters 1:0.9144

12 yd. = 10.9728 m

5. meters to feet 1:3.28084

15 m = 49.2126 ft

6. fluid ounces to milliliters 1:29.5735

15 fl oz = 443.603 mL

7. miles to kilometers 1:1.60934

250 mi = 402.336 km

8. feet to meters 1:0.3048

850 ft = 259.08 m

9. meters to feet (see problem 5)

100 m = 328.084 ft

10. quarts to liters 1:0.946353

8 qt = 7.57082 L

11. pounds to kilograms 1:0.453592

16 lbs = 7.25748 kg

12. kilograms to pounds 1:2.20462

25 kg = 55.1156 lbs

13. inches to centimeters (see problem 3)

50 in = 127 cm

14. gallons to liters 1:3.78541

6 gal = 22.7125 L

15. kilograms to pounds (see problem 12)

86 kg = 189.598 lbs

If x=16 And y=625 then find (2√x+y)^2

Answers

Answer:

400689

Step-by-step explanation:

(2√x+y)²

(2√16+625)²

(2.4+625)

(8+625)²

(633)²

400689

a line with the slope of 1/3 passes through the points of (6,0). what is the equation in slope intercept form?​

Answers

Answer:

y = 1/3x -2

Step-by-step explanation:

the equation for slope intercept form is y= mx + b.

m is the slope and b is where the line crosses the y-axis which is called the y-intercept.

to find the y-intercept plug in a coordinate on the line (6,0)

0 = 1/3(6) + b

then solve for b by first multiplying 1/3 by 6

0 = 2 + b

subtract 2 from both sides

-2 = b

and then you can plug b into the equation

y = 1/3x - 2

what is the simplified form of 4x - 7 + x - 10

Answers

5x-17 is the ans of this question

Answer:

Subtract the numbers

4x-7+x-10

4x-17+x

answer: 5x-17

Step-by-step explanation:

You work as a cashier for a grocery store and earn $5 per hour. You also mow lawns and earn $10 per hour. You want to earn at least $50
per week, but would like to work no more than 10 hours per week.
Which system of inequalities, along with y0 andx
0, would you use to solve the real-world problem?

Answers

The required inequalities are x + y ≤ 10 and 5x + 10y ≥ 50

What is an inequality?

A relationship between two expressions or values that are not equal to each other is called inequality.

Given that, You work as a cashier for a grocery store and earn $5 per hour. You also mow lawns and earn $10 per hour. You want to earn at least $50 per week, but would like to work no more than 10 hours per week.

Let, you work at grocery story (x), and you work mowing lawns (y)

You want to work no more than 10 hrs

So, first inequality will deal with hrs.

x + y ≤ 10....(i)

A less than or equal to sign tells that you do not want to work more than 10 hrs, but you can still work 10 hrs, so we include the equal sign as well.

And,

Grocery store (x) earning $5 per hr and lawn mowing (y) earning $10 per hr, making at least $50...

Now we will make an inequality dealing with the $

5x + 10y ≥ 50.....(ii)

A greater than or equal to sign tells that, you want to make 50 or more, so we include the equal sign.

So, the inequalities are :

x + y ≤ 10

5x + 10y ≥ 50

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Help me!will give brainliest: how do I graph it

Answers

Answer:

Step-by-step explanation:

follow that

Answer:

start at 7 on the y axis the then go down two

Step-by-step explanation:

next 5 points in your graph:

(5,1)

(3,2)

(1,3)

(-1,4)

(-3,5)

brainliest would be appriciated

What is the slope of the line on the graph below

Answers

b) 2/1
find a point, you go up 2 and then over 1!
hope this helps, feel free to mark brainliest!!

Answer:

2

Step-by-step explanation:

Pick any point

You go up 2 and 1 over

2/1 is the same as 2 just simplified!

what percent of 120 is 66?

Answers

Answer:

55%

Step-by-step explanation:

66

120

x 100% = 55%

Answer:

66 is 55% of 120

Step-by-step explanation:

66 = 120 * x%

percent just means out of 100

for example, 20% is equal to 20/100

so, x% is x/100

66 = 120 * x/100

66/[tex]\frac{x}{100}[/tex] = 120

66 * 100/x = 120

6600/x = 120

cross multiply

6600/x = 120/1

6600 * 1 = x * 120

6600/120 = x

x = 55

What is the solution of the equation:
[tex] \sqrt{5 - 2x } = 3i[/tex]

O 1
О 4
O 7
О -2​

Answers

7
Because 5-2 is seven so x =7

What is the slope of the line containing A(6,-2) and
B(-4,4)?

Answers

Answer: -0.6 or -3/5.

Step-by-step explanation: m = 6 / -10 = 3 / -5 = -0.6

Answer:

-0.6

Step-by-step explanation:

Hopefully this helps

tatiana earns money by babysitting her little cousin. when she babysits for 7 hours she earns 94.50. which equation represents her total wages based on the hours that she works?

answers:
y=2x
y=7x
y=27x
y=13.50x

Answers

Answer:

y=13.50x

Explanation:

94.50/7 = 13.5

hold on i think im  wrong who knows sorry

Write the equation, In slope-Intercept form, of the line below.

y=-2
x=-2
y=2
x=2

Answers

Answer:

(0,-2)

no intercept

(0,2)

no intercept

Step-by-step explanation:

hope this helps

Answer:

Answer:

(0,-2)

no intercept

(0,2)

no intercept

Step-by-step explanation:

hope this helps

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Step-by-step explanation:

67 x 10 to the fourth power

Answers

Answer:

670000

Step-by-step explanation:

67 * 10^4

67 * (10*10*10*10)

= 670000

Answer:

670,000

Step-by-step explanation:

You'd do 10^4 first which is 10,000.

Then multiply 10,000 by 67.

67*1 is 67. Add the 4 zeros and you get...

670,000

Solve for X please help I need this asap

Answers

Answer:

f

Step-by-step explanation:

fgbdf

Answer:

x=3

Step-by-step explanation:

They are isosceles triangles and angle 2=56.  

56=53+x

x=3

can someone help me !

Answers

Answer:

Your answer is 3 100000000000% i did the math lol

Step-by-step explanation:

Need help?????????!!!!!!!!!!!!!

Answers

Answer:

29=b

30=a

Step-by-step explanation:

(help asap!!!!) Wyatt is 6 years older than 2 times the age of his nephew. Wyatt is 32 years old. How old is his nephew?

Answers

Answer:

His nephew is 13

Step-by-step explanation:

Reverse the given process,

32 - 6 = 26,

26 ÷ 2 = 13,

The answer is 13.

Answer:

13

Step-by-step explanation:

13 times 2 plus 6 is 32

The function d = 8f + 24 represents the monthly cost d (in dollars) of a group of f members joining the fitness club. a. Identify the independent and dependent variables (don’t say f and d).

Answers

Answer:

D represents the dependent variable: the monthly cost in dollars is your independent variable

F represents the independent variable: the number of members joining the fitness club

Step-by-step explanation:

The amount of money depends on how many members come and join the fitness club because more money is spent more with more members

7. The ratio of width to length of the United States flag is 10:19.
If the width of the flag at Emersen's school is 4 feet, what is its length in feet?

Answers

2 2/19 feet because 19x=4
X=4/19
10x=10x4/9
40/19

A $4 sales tax is charged for a $50 purchase. At this rate, what is the sales tax for a $1200 purchase?

Answers

Answer:

$96

Step-by-step explanation:

Just need 15 and 16 help will mark as brainliest answer

Answers

Behind that one that 2 that 3 00000 break it down chop it up 2 a half 2 a whole

Answer:

15. 12, 16. 18

Step-by-step explanation:

a = pi*r^2

15) 36pi = pi*r^2 --> 36 = r^2 --> 6 = r --> 12 = d

16) 81pi = pi*r^2 --> 81 = r^2 --> 9 = r --> 18 = d

write an equation that is perpendicular to x - 3y =3 and passes through the point (5,-9) in slope-intercept form.

Answers

9514 1404 393

Answer:

  y = -3x +6

Step-by-step explanation:

The perpendicular line will have the coefficients of x and y swapped (and one of them negated), and will have a constant appropriate to the point the line needs to go through.

The equation will look like ...

  x -3y = 3 . . . . . . . . . . . . . given line

  3x +y = constant . . . . . . perpendicular line

where "constant" can be found by substituting for x and y.

  3x +y = 3(5) +(-9)

  3x +y = 6 . . . . equation in standard form

To put this in slope-intercept form subtract 3x:

  y = -3x +6

CAN U PLZ HELP MEE DONT SCROLL DOWN ILL GIVE BRAINLLEST PLZ PLZZZZ

Answers

Answer:

75.4

Step-by-step explanation:

v = pi * r^2 * h

v = 3.14 * 4 * 6

v= 3.14 * 24

v= 75.36 m^3

to the nearest tenth is 75.4 m^3

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