# intermed Algebra

I need help solving this , If the formula R= -0.037t + 50.1 can be used to predict the world record in the 400 meter dash t years after 1925, for what years will the world records be 48.8 seconds or less. I am clueless what to do been on this for an hour.

1. 👍 0
2. 👎 0
3. 👁 41
1. R=timing,
t=years after 1925, for example
in 1950 t=25, and so on.

The problem you need to solve is
R=48.8 s
and need to solve for t.
48.8=-0.037t+50.1
Solution : t=35.1
This means by 1925+35.1=1961 (round up), world records will be 48.8 seconds or less.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Algebra

If the formula R = -0.037t + 50.1 can be used to predict the world record in the 400 meter dash t years after 1925, for what years will the world records be 48.1 seconds or less?

asked by Amber on September 22, 2011
2. ### algebra

: if the formula R=-0.037t + 50.1 can be used to predict the world record in the 400 meter dash t years after 1925, for what years will the world records be 48.1 seconds or less.

asked by jackie on August 12, 2011
3. ### algebra

Ifthe formula R = -0.037t + 50.1 can be used to predict the world record in the 400 meter dash t years after 1925, for what years will the world records be 48.1 seconds or less?

asked by nicole on October 28, 2010
4. ### Math

Hello! I need assistance in solving for a side for a right triangle in trigonometry. Can anyone give me the easiest way/formula how to go about solving it? Thank you!

asked by Jenny Lynn on November 26, 2007
5. ### Math

invested 2000 gains 0.2 every odd numbered month final value after first month? i've tried solving this with a formula, but every formula i come up with is wrong. Could someone tell me how to solve this and plug in the right

asked by Amy on September 5, 2011
6. ### math

What is the result when correctly solving the formula for the variable w when the formula for the perimeter P of a rectangle is P=2l + 2w? Is it w = (p-2l)/2 If not, please explain. Thanks

asked by Jane on May 10, 2013
7. ### Alg 1

The formula for the perimeter P of a rectangle is P=2l +2w. What is the result when correctly solving the formula for the variable w?

asked by Jane on May 9, 2013
8. ### i need help..algebra/math

solve by using the quadratic formula: x2 plus x minus 2 equal 0 I know the formula is a=1 b=1 c=2 I'm having trouble solving...please help.

asked by kate on November 16, 2007
9. ### Physics

Whats the difference between frictionless and friction in a way of solving? Like in formula, and what formula should use

asked by Kae on August 22, 2014
10. ### Math please help!

invested 2000 gains 0.2 every odd numbered month gains 0.15 every even numbered month write function for n months? i've tried solving this with a formula, but every formula i come up with is wrong. Could someone tell me how to

asked by Amy on September 5, 2011

More Similar Questions