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3 years ago

How I Divide 27 in to 624

Mathematics

1 answer:

WARRIOR [948]3 years ago

7 0

Its eight i think at least

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5.23 - 2.1 using models or visuals?

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3.13

Step-by-step explanation:

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3 years ago

A sail is in the form of a right angle that is four times as high as it is wide. The sail is made from 32 square meters of mater

ratelena [41]

Let x be the width , then the height = 4x
Area of this right triangle is x(4x)/2
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x² = 16
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3 years ago

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zzz [600]

Answer:

6) B

7) E

8) D

9) A

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3 years ago

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rosijanka [135]

1a. Y = mx + b
Y = 2x + b
-2 = 2(5) + b
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subtract 12 and y from both sides
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3 years ago

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The estimated daily living costs for an executive traveling to various major cities follow. The estimates include a single room

Alexandra [31]

Answer:

$\bar x = 260.1615$

$\sigma = 70.69$

The confidence interval of standard deviation is: $53.76$ to $103.25$

Step-by-step explanation:

Given

$n =20$

See attachment for the formatted data

Solving (a): The mean

This is calculated as:

$\bar x = \frac{\sum x}{n}$

So, we have:

$\bar x = \frac{242.87 +212.00 +260.93 +284.08 +194.19 +139.16 +260.76 +436.72 +355.36 +.....+250.61}{20}$

$\bar x = \frac{5203.23}{20}$

$\bar x = 260.1615$

$\bar x = 260.16$

Solving (b): The standard deviation

This is calculated as:

$\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n-1}}$

$\sigma = \sqrt{\frac{(242.87 - 260.1615)^2 +(212.00- 260.1615)^2+(260.93- 260.1615)^2+(284.08- 260.1615)^2+.....+(250.61- 260.1615)^2}{20 - 1}}$ $\sigma = \sqrt{\frac{94938.80}{19}}$