maram7dbritishstuden maram7dbritishstuden
  • 07-06-2020
  • Mathematics
contestada

Y is directly proportional to (x+2)2 when x=8 y = 250 find y when x=4

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amybabees
amybabees amybabees
  • 07-06-2020

Answer: 150

Step-by-step explanation: K is constant

250= K (8+2)2

250= K (10)2

250= K (20)

250= K20

divide both sides by 20

250/20= K

12.5= K

THEREFORE

Y= K (4+2)2

Y= 12.5 (6)2

Y= 12.5 × 12

Y= 150

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