Saturday

October 25, 2014

October 25, 2014

Posted by **fred** on Wednesday, May 19, 2010 at 11:10pm.

- math -
**drwls**, Thursday, May 20, 2010 at 4:27amLet y be the year of his birth. x^2 is the year when he is x years old.

x^2 - y = x

x^2 -x = y must be between 1900 and 2000

Try x = 45. His birth year would be 1980

If x = 46, his birth year would be 2070 (too late)

If x = 44, his birth year would be 1892 (too early).

So the birth year is 1980

**Answer this Question**

**Related Questions**

government - Which of the following is eligible to run for the presidency: a 45-...

SS - Which of the following is elegible to run for the presidency: a 45 year old...

Math - The mathematician Augustus DeMorgan lived his entire life during the ...

math hw - in a recent year, 286 female deer were born in clark county. this is ...

math - The year 1991 was the last year of the twentieth century whose number is ...

Social Studies - I am doing a project where I need to know the number of people ...

MATH :D - Mrs. Wilkerson noticed that her in-laws’ birth dates have an unusual ...

MATH - Mrs. Wilkerson noticed that her in-laws’ birth dates have an unusual ...

math - mrs.wheelbarrow weasel is less than 100 years old.her year of birth is ...

algebra - The year 1991 was the last year of the twentieth century whose number ...