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fredd [130]
2 years ago
10

in a survey of 9000 people, 4000 likes tea,4500 like coffee. among them 2500 dont like tea and coffee. find number of people who

like tea and coffee both​
Mathematics
2 answers:
Inessa05 [86]2 years ago
8 0

Answer:

500

Step-by-step explanation:

n(t)=4000

n(c)=4500

n(tea only )= 4000-x

n(coffee only )= 4500-x

n(coffee and tea )= x

note...using Venn diagram ..all together must add up to 9000

(4000-x)+(4500-x) +x = 9000

..............

...........collect like terms

9500-9000 = x

x = 500

KengaRu [80]2 years ago
7 0

Step-by-step explanation:

No of people likes tea = 4000

No of people like coffee = 4500

Total = 8500

No of people don't like tea and coffee = 2500

No of people like tea and coffee = 8500 - 2500 = 6000

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<u>Perimeter</u>:

= 58 m (approximate)

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Step-by-step explanation:

Given the following dimensions of a rectangle:

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width (W) = \sqrt{175} meters

The formula for solving the perimeter of a rectangle is:

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The formula for solving the area of a rectangle is:

A = L × W

<h2>Approximate Forms:</h2>

In order to determine the approximate perimeter, we must determine the perfect square that is close to the given dimensions.  

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Among the perfect squares provided, 16² = 256 is close to 252 (inside the given radical for the length), and 13² = 169 (inside the given radical for the width).  We can use these values to approximate the perimeter and the area of the rectangle.

P  = 2(L + W)

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P = 58 m (approximate)

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<h2>Exact Forms:</h2>

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P = 2(15.8745 + 13.2288)

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P = 58.2066 or 58.21 m

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A = 15.8745 × 13.2288

A = 210.0006 or 210 m²

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2 years ago
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