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raketka [301]
3 years ago
7

Determine if (4, 7) is the solution for the following system: y = 2x - 1 y = -x + 11

Mathematics
1 answer:
babunello [35]3 years ago
6 0

Answer:

Yes

Step-by-step explanation:

7 = 2(4) -1

7 = -4 +11

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konstantin123 [22]
The answer is 13, i got this by using the pythagorean theorem. a^2 + b^2 = c^2. in this case it would be 84^2 + b^2 = 85^2. then that would turn into 7056 + b^2 = 7225, subtract both sides by 7056 to get b^2 = 169, then square 169 to get 13 :)
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3 years ago
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Question is attached
rodikova [14]

9514 1404 393

Answer:

  x = 12

  perimeter = 124

Step-by-step explanation:

The midline RS is half the length of MN, so we have ...

  2×RS = MN

  2(x +3) = 5x -30

  2x +6 = 5x -30

  36 = 3x . . . . . . . . . add 30-2x

  12 = x . . . . . . . . . . divide by 3

__

The length RS is then ...

  RS = x +3 = 15

and the perimeter of QRS is ...

  P(QRS) = QR +RS +SQ = 25 +15 +22 = 62

The perimeter of QRS is half the perimeter of MNP, so ...

  P(MNP) = 2×P(QRS) = 2×62 = 124

The perimeter of ΔMNP = 124.

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2 years ago
Find the distance between the points (6, 3) and (6,-5).
tiny-mole [99]

the answer is negative two over zero

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Answer:

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Step-by-step explanation:

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