The sand on a beach is being washed away by slowly by erosion. In 1870, a lighthouse was 1500
feet from the shoreline. In 1990, the lighthouse was only 150 feet from the shoreline. If the
erosion continues at this rate, how many more years will it be before the lighthouse is at the
shoreline? Write an equation that will tell you the distance of the lighthouse from the shore at
any year, where t is the year.
2007-07-17 06:06:22 · 5 answers · asked by Anonymous in Entertainment & Music ➔ Polls & Surveys
no the answer is albert einstine!
2007-07-17 06:12:54 · update #1
Easy
1500-150 = 1350 / ( number of years ) 120 = 11.25' eroding each year
150'/11.25' = 13.33333 years till its on the shore
So it probably fell in sometime during 2003
2007-07-17 06:12:52 · answer #1 · answered by thomas 7 · 0⤊ 0⤋
Huh what now? You had me lost at the word math.
2007-07-17 13:09:52 · answer #2 · answered by Anonymous · 1⤊ 0⤋
the answer is always 7
2007-07-17 13:08:44 · answer #3 · answered by dusmul78 4 · 0⤊ 0⤋
huh? schools out. i hate math
2007-07-17 13:12:44 · answer #4 · answered by amcfan84 6 · 0⤊ 0⤋
I was told there would be no math....
2007-07-17 13:10:04 · answer #5 · answered by Brownie 5 · 0⤊ 0⤋