Question

Heather wanted to measure the effects of erosion on a mound of soil in her backyard. The area she measured was 9 inches in height. During a storm it eroded 1/8 every day for 8 days. Write an expression that can be used to find the height of the mound of soil after the storm and simplify the expression.

Answer 1

originally:
9in

every day (1/8)th gets eroded.. how much is left out? -> 7/8th

end of day 1-> \(h_1=9\times{7\over8}\)
end of day 2->\(h_2=h_1{7\over8}=9\times\left({7\over8}\right)^2\)
and so on..
end of nth day-> \(h_n=9\times\left({7\over8}\right)^n\)

Answer 2

so how much would be left?

Answer 3

63/8

Answer 4

IS IT RIGHT electro kid

Answer 5

it will be \(9\times\left({7\over8}\right)^8\)

Answer 6

3.092480242

Answer 7

yep

Answer 8

how did you get 63/8?

Answer 9

i multipled 9*7/8

Answer 10

that is after the first day.. look at my elaboration..
after "n" number of days... \(h_n\)

Answer 11

the question asks you to obtain that expression!

Answer 12

CAN YOU HELP ME WITH 9 WORD PROBLEMS PLEASE ?

Answer 13

say whaaaat!!
i needed to chill, so i did this one.. there are lots o' nice people over here... post em up, I am sure somebody would answer

Answer 14

:)

Answer 15

NOBODY ANSWER PLEASE