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2 years ago

an examination ,60% of the candidates failed the number of candidates who passed was 500 .find the number that failed

Mathematics

1 answer:

Stels [109]2 years ago

6 0

Answer:

Step-by-step explanation:

If 60% failed then 40% passed

.4n=500

n=1250 so there are 1250 candidates of which

.6(1250)=750 failed

So 750 candidates failed.

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What is the area of this figure?

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Answer:

290.5 square miles

Step-by-step explanation:

Consider splitting this figure into two mini rectangles and a triangle, each of given lengths;

$Dimensions of Rectangle 1 - Height ; 5 mi, Length ; 7 mi,\\Area of Rectangle 1 - Height * Length = 5 mi * 7 mi = 35 mi^2\\\\Dimensions of Rectangle 2 - Height ; 18 mi, Length ; 8 mi,\\Area of Rectangle 2 - Height * Length = 23 mi * 8 mi = 184 mi^2\\\\Dimensions of Mini Right Triangle - Height ; 11 mi, Base ; 8 + 5 = 13 mi,\\Area of Mini Right Triangle - 1 / 2 * Base * Height = 1 / 2 * 13 mi * 11 mi = 71.5 mi^2,\\\\Area of Figure = 35 mi^2 + 184 mi^2 + 71.5 mi^2 = 290.5 square miles$

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Step-by-step explanation:

We can use volume V = 4/3 π r³

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2 years ago

an examination ,60% of the candidates failed the number of candidates who passed was 500 .find the number that failed​

an examination ,60% of the candidates failed the number of candidates who passed was 500 .find the number that failed