Wednesday

July 23, 2014

July 23, 2014

Posted by **Jessica** on Friday, October 21, 2011 at 1:11am.

- Mathematics -
**drwls**, Friday, October 21, 2011 at 2:01amLet x be his present age.

x + 11 = (1/2)(x - 13)^2

You could solve that quadratic equation or use trial and error.

Try x = 21

does 32 = (1/2)*8^2 ?

Looks good to me.

**Related Questions**

math - In 11 years, the age of Russel will be half of the square of the age he ...

Mathematics-please help quick!! - Harry is twice as old as Doyle. Doyle's age is...

Algebra (Age Problem) - Five years ago Rico's age was half of the age he will be...

Math - Application of Quadratic Equations. A girl's age in 12 years' time is the...

Mathematics - Kari is 10 years old. her sister is half her age. Explain why 10 x...

math - A. A woman was 30 years old when her daughter was born.Her age is now 6 ...

Mathematics - Mary's age is 2/3 that of Peter's. Two years ago Mary's age was 1/...

vivekanand H s SCHOOL - the difference of ages between 2 sisters is 10 years, 15...

Math - The sum of John's age and twice of his son's age is 56. In 8 years time, ...

Math - Sheila's age is two years more than twice Nicole's age. The sum of their ...