Math Question: Word problem, 8th Grade!!!!!!
Favorites|Homepage
Subscriptions | sitemap
HOME > > Math Question: Word problem, 8th Grade!!!!!!

Math Question: Word problem, 8th Grade!!!!!!

[From: ] [author: ] [Date: 12-11-10] [Hit: ]
5 * 10^-6 seconds. How many operations can it perform in one hour? By the way, the answer has to be in scientific notation, and the question is also in scientific notation.-1000 operations in 4.......
I took a test today, and this problem confused me. So please explain thoroughly how you got your answer and what your answer was. Here is the problem: "A computer performs 1,000 operations for 4.5 * 10^-6 seconds. How many operations can it perform in one hour?" By the way, the answer has to be in scientific notation, and the question is also in scientific notation.

-
1000 operations in 4.5 × 10^(–1) s.
in 1 second operations = 1000/[4.5 × 10^(–6)]
= (1000/4.5) × 10^6
1 hour = 3600 s.
in 1 hour operations = (1000/4.5) × 10^6 × 3600
= 3600/4.5 × 1000 × 10^6
= 800 × 1000 × 10^6
= 8 × 10^11 operations
-----

-
it is not only 1000/4.5 but it is 1000 ÷ 4.5 × 10^(–6)
as 1/a^(–m) = a^m
why to divide consider for 1000 men 45 notes then for 1 man it is 1000/45
similar to that isiis divided

Report Abuse

1
keywords: problem,th,Grade,Word,Question,Math,Math Question: Word problem, 8th Grade!!!!!!
New
Hot
© 2008-2010 http://www.science-mathematics.com . Program by zplan cms. Theme by wukong .