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Vladimir79 [104]
3 years ago
6

A recipe for a cassetole calls for 3 4/7 cups of rice.adam has already put in 3 1/4 cups how mqny more cups does he need to put

in
Mathematics
1 answer:
Maru [420]3 years ago
3 0
You need to make the fractions into improper fractions with the same denometer. 3 4/7 to an improper fraction is 25/7 and 3 1/4 is 13/4. Now get common denometers, in going to choose 28. 100/28 is the same as 25/7 and 91/28 is the same as 13/4. Now subtract 100/28 and 91/28 and you get 9/28. So you need to add 9/28 of a cup.
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Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

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In this problem, we have that:

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This is the pvalue of Z when X = 40. So

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Don't mind the ±

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