Wednesday

October 22, 2014

October 22, 2014

Posted by **Anonymous** on Tuesday, October 21, 2008 at 6:42pm.

plz explain the work .....

- math -
**alisha**, Tuesday, October 21, 2008 at 6:43pmplz...help

- alisha -
**Reiny**, Tuesday, October 21, 2008 at 6:56pmlook at it as ordered pairs of the form

(time, height)

you are given 2 such points, namely

(1,12) and (4,10.5)

slope = (10.5+12)/(4-1)

= -1.5/3 = -.5 or =1/2

using height = m(time) + b (remember y=mx+b ?)

and using the point (1,12)

we get

12 = -(1/2)(1) + b

b = 12.5

so height = -time/2 + 12.5

you want height to be 6

6 = -time/2 + 12.5

12 = -time + 25

time = 25-12

= 13

- alisha -
**Anonymous**, Tuesday, October 21, 2008 at 7:06pmthanks so so so much

- alisha -

**Answer this Question**

**Related Questions**

Algebra 2 Please Help - 21. A candle is 17 in. tall after burning for 3 hours. ...

math - A candle is 17 in. tall after burning for 3 hours. After 5 hours, it is ...

math - Suppose that the height (in centimeters) of a candle is a linear function...

Math - Suppose that the height (in centimeters) of a candle is a linear function...

college math - the height (in cm) of a candle is a linear function of the amount...

Precalculus - The height (in centimeters) of a candle is a linear function of ...

math - The height (in centimeters) of a candle is a linear function of the ...

math (rate) - I need help! Ok here's the problem. Melissa lights 2 candles that ...

algebra - a tree 5 ft tall growns an average of 8 in each year, write an ...

Math - The pressure on a scuba diver at sea level is 14.7 pounds per sq inch (...