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3 years ago

Solve the system of linear equations by elimination. x−2y=−7 3x+2y=3. solution: (_,_)

Mathematics

1 answer:

irga5000 [103]3 years ago

4 0

Step1: Multiply first equation by 5 and second by 2.

<span>Step2: </span>add the two equations together to eliminate y from the system.

Step 3:substitute the value for x into the original equation to solve for y.

The solution is:

x=1 y=2

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Help me answer the question pleaseee!!!

vfiekz [6]

Option A,B,C,D,F are False

Option E is True

Step-by-step explanation:

Finding graphs of the equation: y= -4x+6

Checking all the options.

A) (-4,-10)

Plugging value of x as -4 and y as -10

-10=(-4)(-4)+6

-10 = 16+6

-10 ≠ 22

So, both sides of the equation will not be equal.

B) (-4,-22)

Plugging value of x as -4 and y as -22

-22=(-4)(-4)+6

-22=16+6

-22 ≠ 22

So, both sides of the equation will not be equal.

C) (1,10)

Plugging value of x as 1 and y as 10

10=(-4)(1)+6

10 = -4+6

10 ≠ 2

So, both sides of the equation will not be equal.

D) (1,-2)

Plugging value of x as 1 and y as -2

-2=(-4)(1)+6

-2 = -4+6

-2 ≠ 2

So, both sides of the equation will not be equal.

E) (4,-10)

Plugging value of x as 4 and y as -10

-10=(-4)(4)+6

-10 = -16+6

-10 = -10

So, both sides of the equation will be equal.

F) (4,-22)

Plugging value of x as 4 and y as -22

-22=(-4)(4)+6

-22 = -16+6

-22 ≠ -10

So, both sides of the equation will not be equal.

So, Option A,B,C,D,F are False

Option E is True

Keywords: Graph of equations

Learn more about Graph of equations at:

#learnwithBrainly

3 0

3 years ago

Please help me it urgent i need help i beg you guys!

nordsb [41]

Solve for y in the first equation.

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2 years ago

How do you find the area of a cube measuring 3ft it has 7sides

RUDIKE [14]

3 times 7= 21 times three =63

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3 years ago

Jill weighs 120 pounds and is gaining ten pounds each month. Paris weighs 150 pounds and is gaining 4 pounds each month. How man

lyudmila [28]

Answer:

5 months

Step-by-step explanation:

To solve this problem, we need to create and algebraic equation for when Jill's weight will be equal to Paris's. If we take their current weight and then add the additional weight gain per month times the number of months, we can calculate the amount of time it will take for their weight to be equal by solving for m.

$120+10m=150+4m\\10m-4m=150-120\\6m=30\\m=5$

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3 years ago

Which decimal number is the smallest 1.001 1.1 1.01 1.011

ddd [48]

1.001 is the smallest :)))

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