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2 years ago

4.An equilateral triangle has sides of length ad? V3Show that the area is4

Mathematics

1 answer:

Reika [66]2 years ago

5 0

Answer:

$\frac{ \sqrt{3} }{2} a {}^{2}$

Step-by-step explanation:

the side of equilateral triangle = a

so, area =

$\frac{ \sqrt{ 3} }{2} \times side {}^{2}$

=》

$\frac{ \sqrt{3} }{2} \times a {}^{2}$

=》

$\frac{ \sqrt{3} }{2} a {}^{2}$

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Kruka [31]

Answer:

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5p=140

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3 years ago

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Using the z-distribution, it is found that the 90% confidence interval is given by: (0.6350, 0.6984).

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

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In which:

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z is the critical value.

n is the sample size.

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$n = 600, \pi = \frac{400}{600} = 0.6667$

Hence, the bounds of the interval are given by:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6667 - 1.645\sqrt{\frac{0.6667(0.3333)}{600}} = 0.6350$

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The 90% confidence interval is given by: (0.6350, 0.6984).

More can be learned about the z-distribution at brainly.com/question/25890103

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2 years ago

4.An equilateral triangle has sides of length ad? V3Show that the area is4​

4.An equilateral triangle has sides of length ad? V3Show that the area is4