Ask questions and get helpful responses.

Math

A quantity c partly varies as n and partly varies as the square of n. when c=22, n=2 and when c=115, n=5. find the: (i)equation connecting c and n.

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
  1. c = an+bn^2
    Now, using the points (2,22) and (5,115) solve for a and b:
    2a+4b = 5
    5a+25b = 115 or, dividing by 5, a+5b = 23

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩

Respond to this Question

First Name

Your Response

Still need help? You can ask a new question.