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Blizzard [7]
3 years ago
12

I neeed help thanksssss

Mathematics
2 answers:
dusya [7]3 years ago
3 0

Answer:

Volume: 366.6

Surface Area: 314.2

Explanation (look at below)

Step-by-step explanation:

Volume:

The radius of this sphere is 5 (half of 10). The equation will be \frac{4}{3} \pi5^3

When you calculate that, it will become: 366.6<-- rounded to the nearest tenth.

Surface Area:

4\pi5^2

=100Π

=314.2<-- rounded to the nearest tenth.

Aleksandr [31]3 years ago
3 0

314.2 is the nearest tenth digit no.

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yaroslaw [1]
2x-438 = -438+2x= 2(x-219)
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A hot air balloon rose from a height of 100 m to 400 m in 3 minutes. What was the balloon’s rate of change?
maria [59]

Answer:

1.666666667 meter per sec^2

Step-by-step explanation:

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Write each of the following numerals in base 10. For base​ twelve, T and E represent the face values ten and​ eleven, respective
kifflom [539]
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5 0
3 years ago
The Wall Street Journal reported that automobile crashes cost the United States $162 billion annually (2008 data). The average c
ivanzaharov [21]

Answer:

n=(\frac{2.326(500)}{120})^2 =93.928 \approx 94

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Step-by-step explanation:

Information given

\bar X represent the sample mean

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n represent the sample size  

Solution to the problem

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{s}{\sqrt{n}}    (a)

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n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

The confidence2 level is 98% or 0.98 then the significance level would be \alpha=1-0.98=0.02 and \alpha/2=0.01, the critical value for this case would be z_{\alpha/2}=2.326, replacing into formula (b) we got:

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8 0
3 years ago
Solve 15 ≥ -3x or 2/5 x ≥ -2.
ipn [44]

Answer:

x ≥ -5

Step-by-step explanation:

15≥-3x

<em>switch sides</em>

<em>-3x≤15</em>

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<em>(-3x)(-1)≥15(-1)</em>

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<em>x≥ -5</em>

6 0
3 years ago
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