Saturday, December 5, 2009

Maths PlEASE help!?

Cllifford believes that the hours of sunshine per month in Brighton is inversely proportional to the depth of rainfall recorded in one month in Brighton. In one month a total of 14cm of rain was recorded whilst there were 145 hours of sunshine.



How much rain would Clifford expect if Brighton has 90 hours of sunshine in a month?



Thnx :)



Maths PlEASE help!?pacific theater



14/145=x/90



(14*90)/145=



1260/145=



8.689



Maths PlEASE help!?phantom of the opera opera theater



Let H = hrs of sunshine



d = depth of rainfall



hence , H δΌͺ 1/d



=%26gt; H = k . (1/d) where k is the constant of proportion.



Now according to the question ,



H = 145 , and d = 14



hence , 145 = k. (1/14)



=%26gt; k = 145 x 14 = 2030



Nod the eq is : H = 2030/d



=%26gt; d = 2030/H



For 90 hrs of sunshine ,



d = 2030/90 = 22.55 cms



Hence 22.55 cms of rain would be recorded.
Brighton rainfall is 14cm



145 hours of sunshine



90 hours of sunshine case 2



145/90 = 14 / X



145/90 . 14 = X



145/90=5/3



5/3 = 1.67



1.67 X 14 = 1.8



Good Luck and use Google!

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