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2 years ago

9

Explain how you use substitution to solve a system of linear equations.

2 answers:

Marianna [84]2 years ago

7 0

The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.

lions [1.4K]2 years ago

7 0

Answer: Step 1 : First, solve one linear equation for y in terms of x .

Step 2 : Then substitute that expression for y in the other linear equation.

Step 3 : Solve this, and you have the x -coordinate of the intersection.

Step 4 : Then plug in x to either equation to find the corresponding y -coordinate.

Step-by-step explanation: MARK ME AS BRAINLIEST PLEASE PLEASE PLEASE!!!

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If Ben is responsible for mowing 50% of the lawn what does that mean

klemol [59]

Answer:

Step-by-step explanation:

That mean he mows half of the lawn or just the front of the lawn . that means 50% of the lawn should be mowed.

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2 years ago

A jar of peaches weighs 13 ounces. There are 16 jars in a crate. How many Ounces does a crate weigh?

Verizon [17]

Answer:

You will get 208 ounces in a crate.

Step-by-step explanation:

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Hope this helps!

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3 years ago

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2 years ago

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3 years ago

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Solve the simultaneous equation <br> 2x-5y=9<br> 3x+4y=2

Dmitriy789 [7]

Answer/Step-by-step explanation:

2x-5y=9

Add 5y to both sides of the equation.

2x=9+5y

Divide each term by 2 and simplify.

Divide each term in 2x=9+5y by 2

$\frac{2x}{2} =\frac{9}{2} +\frac{5y}{2}$

Cancel the common factor of 2.

Divide x by 1.

$x=\frac{9}{2} +\frac{5y}{2}$

$y=\frac{-9}{5} +\frac{2x}{5}$

----------------------------------------------------------------------------------------------------------------

3x+4y=2

Add 4y to both sides of the equation

3x=2+4y

Divide each term by 3 and simplify.

Divide each term in 3x=2+4y by 3.

$\frac{3x}{3} =\frac{2}{3} +\frac{4y}{3}$

Cancel the common factor of 3.

Divide x by 1.

$x=\frac{2}{3} +\frac{4y}{3}$

$y=\frac{-1}{2} +\frac{3x}{4}$

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2 years ago