3x-2y=10. 4x-y=6. solve each of the pair of simultaneous linear equation by substitution method ​

Answers

Answer 1

Answer:

x = 2/5, y= -22/5

Step-by-step explanation:

4x−y=6;3x−2y=10

Step: Solve4x−y=6for y:

4x−y+−4x=6+−4x(Add -4x to both sides)

−y=−4x+6

-y/-1 = -4x +6 over -1 (Divide both sides by -1)

y=4x−6

Step: Substitute4x−6for y in 3x−2y=10:

3x−2y=10

3x−2(4x−6)=10

−5x+12=10(Simplify both sides of the equation)

−5x+12+−12=10+−12(Add -12 to both sides)

−5x=−2

-5x/-5 = -2/5 (Divide both sides by -5)

x=  2 /5

Step: Substitute  2/ 5  for x in y=4x−6:

y=4x−6

y=4 ( 2/ 5 ) −6

y=  −22 /5

(Simplify both sides of the equation)

x = 2/5, y= -22/5


Related Questions

Give 3 values for x that make the inequality true. x < 3

Answers

Answer:

2, 1, 0

Step-by-step explanation:

they are less than 3 (Please mark brainliest)

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Answers

Answer:

4= 20

Step-by-step explanation:

hope this helps.

write f(x)=(x-2)(x+2)(x+1)^2 as a polynomial function​

Answers

Answer:

Step-by-step explanation:

[tex](x-2)(x+2)((x+1)^2\\ \\ (x^2-4)(x+1)^2\\ \\ (x^2-4)(x^2+2x+1)\\ \\ x^4+2x^3+x^2-4x^2-8x-4\\ \\ x^4+2x^3-3x^2-8x-4[/tex]

Amy is a years old.
Zack is 7 years older than Amy.
Using a, write an expression for Zack's age.

Answers

Answer:

x + 7

Step-by-step explanation:

amy is unknown x + 7 equals zack

Is 16 a multiple of 8?

Answers

Answer:

have a good day!

Yes it is.

URGENT!!!!!! PLEASE ANSWER !!!!!!
7) Grace earns $18 per hour working as a math tutor. Write and solve an
inequality that can be used to find how many hours she must work in a week to
earn at least $378.
_6)

Answers

Answer:

The equation is 18h=378

h=21

Step-by-step explanation:

So first you have to set up the equation

so if she makes 18 dollars an hour the first part of the equation would be 18h

She made 378 dollars in one week so now the equation is 18h=378

The answer is h=21 because 378/18 is 21

Date:
.
'. Due to coxid-19 pandimec, the Jacinto
Family donated 180 pos Face Shield
and the aguinaldo family also don
213 pcs of pace shield to the front
liner, If a face shield cost 8m pesos
How much
the total cost of
donation.
tone soola​

Answers

Answer:

It's 3,114: )

Step-by-step explanation:

Because if you multiply the 8m to 180 it will remain to 1,440 plus additional 1,704 so it will be 3,114, the main answer

How would this triangle be classified?

Answers

Answer:

Isosceles acute

Step-by-step explanation:

2 of the sides are the same and 1 is different therefore it is isosceles. Alol the angles are acute.

PLZ HELP ME WITH THIS NEED THE ANSWER NOW PLSSSSSSSSS THIS IS 7TH GRADE AMTH

Answers

Answer:

Just by the looks at it P has the greater slope I think but graph it to make sure cause I might be wrong.

Answer:

Function 2

Step-by-step explanation:

Point A is at (-2, 4) and point B is at (7,3).
What is the midpoint of line segment AB?

Answers

Answer:

(2.5,3.5)

Step-by-step explanation:

Omni calculator

Answer:

(2.5, 3.5)

Step-by-step explanation:

3. Armen los siguientes prismas a partir de los que construyeron con su material recor
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Prisma
Por et
en el fonda, near ty api
quen la foto da alisema cavab
en el fin de pana
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Answers

Answer:

can you translate to english

Step-by-step explanation:

I can't understand

Help help help help help

Answers

9x-15=8x+12
9x=8x-3
... x=27

8(27)+12
...
HI= 228

Please help me, willing to pay! Drop gcash no.​

Answers

Answer:

1. a+b

2. x+7

3. r^2

4. (a-12)

5. z-14

1. a+b
2. x+7
3. 2r
4. a-12
5. z-14

please help me asap!!!

Answers

Answer:

Already answered it

Step-by-step explanation:

Please help! Marking brainliest if correct.

Answers

Answer:

110 degrees

Step-by-step explanation:

Because these angles are vertical, 5x+15=8x-42. thus, 15=3x-42, 3x=57, and x=19. 5x+15=5(19) +15=110. So, m<CDE=110 degrees.

Answer:

110°

Step-by-step explanation:

Since CDE and FDG are vertical, they are congruent, so:

5x + 15 = 8x - 42

Solve the equation for x

57 = 3x

19 = x

Then solve for one of the angles (I chose CDE but FDG would also work)

5(19)+15

95 + 15

110

Solve the equation by balancing 3n+2=17

Answers

Answer:

3n=17-2

3n=15

n=15/3

n=5

Step-by-step explanation:

therefore putting the value of n=5 the equation can be balance

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