Sunday

April 19, 2015

April 19, 2015

Posted by **cat** on Friday, July 22, 2011 at 6:27am.

R =−0.0026? + 4.0807

can be used to predict the world record, in minutes, for the 1500-m run t years after 1900. Determine (in terms of an inequality) those years for which the world record will be less than 3.8 min.

- algebra -
**drwls**, Friday, July 22, 2011 at 7:04amIs ? supposed in your equation to be t?

If so, you need to solve

3.8 < 4.0807 - 0.0026 t

It can be rewritten

0.0026 t > 0.2807

Solve for t and add that to 1900.

The equation is not at all accurate. The men's world record for this distance became 3.325 minutes in 2004.

Perhaps the equation applies to the WOMEN's world recdrod time.

Please state your questions more carefully

Math - Women’s records in the women’s 1500-m run. The formula R =−0.0026...

Algebra - The formula R= -0.75t +385 can be used to predict the world record in ...

algebra - The formula R=-0.075 t 3.85 can be used to predict the world record in...

algebra - The formula R= - 0.075 + 3.85 can be used to predict the world record ...

Math - the formula R= -0.75t +3.85 can be used to predict the world record in ...

algebra - the formula r= -0.075t + 3.85 can be used to predict the world record ...

math - The formula R = -0.075t+3.85 can be used to predict the world record in ...

algebra 1 - please help me solve this problem. The formula R=0.075 + 3.85 can be...

Math 116 - The formula R= -0.075t + 3.85 can be used to perdict the world record...

Algebra - If the formula R= -0.0371 + 50.1 can be used to predict the world ...