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natita [175]
3 years ago
9

Tractice writing as a qua

Mathematics
1 answer:
Firlakuza [10]3 years ago
3 0

Answer:

  • z = 3x+2
  • z^2 +7z -8 = 0

Step-by-step explanation:

Define ...

  z = 3x+2

Substitute for that expression in the given quadratic:

  z^2 +7z -8 = 0 . . . . . . your equivalent quadratic

_____

This equation is easily solved by factoring:

  (z +8)(z -1) = 0

  z = -8 or +1

Then x can be found from z:

  (z -2)/3 = x

  (-8 -2)/3 = x = -10/3

  (+1 -2)/3 = x = -1/3

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Triangle sum (3x+1)^0+(10x-11)^0+(3x-2)^0=180
svetlana [45]

Answer:

  • x = 12
  • 3x+1 = 37°
  • 10x-11 = 109°
  • 3x-2 = 34°

Step-by-step explanation:

Perhaps you want to know the value of x or the measures of the angles?

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Simplifying the given equation, you get ...

  (16x -12)° = 180°

  16x = 192 . . . . . . . divide by °, add 12

  x = 12

  (3x+1)° = (3·12+1)° = 37°

  (10x-11)° = (10·12-11)° = 109°

  (3x-2)° = (3·12-2)° = 34°

x is 12, and the angle measures are 37°, 109°, 34°.

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Answer:

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Step-by-step explanation:

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