1.

7. If y varies directly w³, and y = 25 when w = 5, find the value of y when w = 2.

Answer»

Answer:

8/5

Step-by-step explanation:

If y varies DIRECTLY w³, and y = 25 when W = 5, find the value of y when w = 2.

Given:

When w=5

  • y= k*5³= 125k  and y=25
  • 125k=25
  • k=25/125= 1/5

As the value of k is KNOWN, we have new equation:

  • y= w³ / 5

For w=2 we have

  • y= 2³/5= 8/5

Answer: 8/5



Discussion

No Comment Found

Related InterviewSolutions