The present age of sahil's mother is three time the present age of sahil . after 5 years their ages add up to 66 years . find theor present ages

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

What is the upper quartile in the box plot?

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12