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Natasha2012 [34]

3 years ago

13

In an examination every student took history or geography or both of 500 candidates 60% took history whiles 72% took geography.

How many students took both subjects

2 answers:

almond37 [142]3 years ago

6 0

Answer:

80 students

Step-by-step explanation:

NeTakaya3 years ago

3 0

Answer:

80

Step-by-step explanation:

60% of 500 = 300

72% of 500 = 360

40% of 500 = 200

28% of 500 = 140

300+360 = 660

660 - 2x = 500

660 - 500 = 2x

160 = 2x

2x = 160

x = 80

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FrozenT [24]

A polynomial asymptote is a function $p(x)$ such that

$\displaystyle\lim_{x\to\pm\infty}(f(x)-p(x))=0$

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Since this equation defines a hyperbola, we expect the asymptotes to be lines of the form $p(x)=ax+b$ .

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We write

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The other asymptote is obtained similarly by examining the limit as $x\to-\infty$ .

$\displaystyle\lim_{x\to-\infty}(2x-1+2\sqrt{x^2-x}-ax-b)=0$

$\displaystyle\lim_{x\to-\infty}(2x-2x\sqrt{1-\frac1x}-ax-(b+1))=0$

Reduce the "negligible" term to get

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Explain how you find it

aliina [53]

Answer:

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Step-by-step explanation:

there is a theorem that states that the midsegment in a trapezoid is equal to the sum of the bases divided by two

so, (36 + 42)/2 = x

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Nuetrik [128]

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