Respuesta :

Answer:

See below ~

Step-by-step explanation:

Question 18

  • Diameter = Difference in y-coordinates
  • Diameter = 12 - 2 = 10
  • We know : Radius = Diameter/2
  • Radius = 10/2
  • Radius = 5 cm
  • (1) 5 cm

Question 19

  • 3x² - 34x - 24 = 0
  • (3x + 2)(x - 12) = 0
  • Solution set = {-2/3, 12}
  • (3) {-2/3, 12}

#1

Length of diameter

  • √(2-2)²+(2-12)²
  • √(-10)²
  • 10units

Length of radius=10/2=5

#2

  • 3x²-34x-24=0
  • (x-12)(3x+2)=0
  • x=12 or -2/3

Solution set

  • {-2/3,12}

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