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matrenka [14]
3 years ago
8

Solve the system using elimination. -2x+6y=18 -4x-6y=18

Mathematics
2 answers:
Serga [27]3 years ago
8 0
Line each equation up and add together

oksano4ka [1.4K]3 years ago
3 0

Answer:

(-6,1)

Step-by-step explanation:

-2x+6y=18

-4x-6y=18

Add the two equations together to eliminate y

-2x+6y=18

-4x-6y=18

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

-6x   = 36

Divide each side by -6

-6x/-6 = 36/-6

x = -6

Now we need to find y

-2x +6y = 18

-2(-6) +6y = 18

12 +6y = 18

Subtract 12 from each side

12-12 +6y = 18-12

6y = 6

Divide by 6 on each side

6y/6 = 6/6

y = 1

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viktelen [127]

Answer:

<u><em>The </em></u><u><em>area of the right triangle</em></u><u><em> is </em></u><u><em>100 centimeters squared.</em></u>

Step-by-step explanation:

<u><em>The </em></u><u><em>formula for the area of a right triangle is:</em></u>

Area = \frac{a*b}{2}

<u><em>Area = (a*b) / 2</em></u>

<u><em>The height of a triangle is represented by a. The base is represented by b.</em></u>

<u><em>Knowing this, we can use what they give us for the values, by </em></u><u><em>plugging them into the formula</em></u><u><em>.</em></u>

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<u><em>Therefore :</em></u>

Area = \frac{200}{2}

Area = 100

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4 0
2 years ago
Jen is 3 years older than nancy . Let x represent nancy's age. Let y represent jen's age. Create an equation to show nancy's age
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MatroZZZ [7]

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Step-by-step explanation:

What is the "theoretical yield" of cookies from each of the "reactants?"

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