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saw5 [17]
3 years ago
13

PLEASE HELP due in 20 min!!!

Mathematics
1 answer:
valina [46]3 years ago
5 0

Answer:

Seriously, Khan Academy?

Step-by-step explanation:

130.83333333333333333333333333333

or 130. 83

pi r^2 h/3

3.14 x 25 x 5/3 = 130.83333333333333333333333333333 = 130.83

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For each ordered pair, determine whether it is a solution to the system of equations.
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The only ordered pair that is a solution to the given system of equations is (-2, -6)

<h3>System of Linear Equations </h3>

From the question, we are to determine if each ordered pair is a solution to the given system of equations

The given system of equations is

-9x + 2y = 6

5x - 3y = 8

  • For (7, 9)

That is,

x = 7, y = 9

Putting the values into the first equation

Is -9(7) + 2(9) = 6

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Thus, (7,9) is not a solution

  • For (0, 3)

That is,

x = 0, y = 3

Putting the values into the first equation

Is -9(0) + 2(3) = 6

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Testing for the second equation

Is 5(0) - 3(3) = 8

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Thus, (0, 3) is not a solution

  • For (5, -4)

That is,

x = 5, y = -4

Putting the values into the first equation

Is -9(5) + 2(-4) = 6

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Thus, (-5,4) is not a solution

  • For  (-2, -6)

That is,

x = -2, y = -6

Putting the values into the first equation

Is -9(-2) + 2(-6) = 6

18 - 12 = 6

6 = 6

The ordered pair satisfies the first equation

Testing for the second equation

Is 5(-2) -3(-6) = 8

-10 + 18 = 8

8 = 8

The ordered pair satisfies the second equation

∴ The ordered pair that is a solution to the system of equations is (-2, -6)

Hence, the only ordered pair that is a solution to the given system of equations is (-2, -6)

Learn more on System of equations here: brainly.com/question/8630769

#SPJ1

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If 2x=-14,what is the value of x
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Answer:

x=-7

Step-by-step explanation:

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