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2 years ago

Find the mean set of this data set 25,45,12,34,3645,19,20

Mathematics

2 answers:

alisha [4.7K]2 years ago

6 0

Mean=( 25+45+12+34+3645+19+20)/7=542.8571429=543 (3sf)

Dimas [21]2 years ago

5 0

25+45+12+34+36+45+19+20/8= 29.5
Therefore 29.5 is your mean. (:

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In AGHI, h = 300 inches, G=30° and H=29º. Find the length of i, to the nearest<br> inch.

dalvyx [7]

Given:

In triangle GHI, h = 300 inches, G=30° and H=29º.

To find:

The length of i.

Solution:

We have, G=30° and H=29º.

Using angle sum property, we get

$m\angle G+m\angle H+m\angle I=180^\circ$

$30^\circ+29^\circ+m\angle I=180^\circ$

$59^\circ+m\angle I=180^\circ$

$m\angle I=180^\circ-59^\circ$

$m\angle I=121^\circ$

According to Law of sines,

$\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}$

Using Law of sines, we get

$\dfrac{h}{\sin H}=\dfrac{i}{\sin I}$

$\dfrac{300}{\sin 29^\circ}=\dfrac{i}{\sin 121^\circ}$

$\dfrac{300}{0.4848}=\dfrac{i}{0.8572}$

Multiply both sides by 0.8572.

$\dfrac{300}{0.4848}\times 0.8572=i$

$530.44554=i$

$i\approx 530$

Therefore, the length of i is about 530 inches.

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2 years ago

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sergejj [24]

Answer:

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Step-by-step explanation:

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What is the most efficient first step to isolate the variable term on one side of this equation?

Nat2105 [25]

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Step-by-step explanation:

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2 years ago

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e-lub [12.9K]

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Step-by-step explanation:

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2 years ago

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Sedbober [7]

Answer:

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Step-by-step explanation:

Consider the meaning of "one, and one more". That does not mean zero (1-1). Rather, it means two (1+1).

Then 3/4 and 472 more is ...

$\dfrac{3}{4}+472=472\frac{3}{4}$

Eric has 472 3/4 buckets filled with sand.

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The problem statement here seems to be focused on the filled buckets, rather than the sand stockpile that Eric is working from. The amount in that stockpile is being reduced by the amount that is being used to fill buckets. In short, whether you add or subtract depends on what you're trying to figure.

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