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liq [111]
3 years ago
8

Use the following scenario to answer the question below:

Mathematics
1 answer:
stepladder [879]3 years ago
4 0
The question exemplifies a
  B. Unit Conversion
problem.

Jonathan must convert 9 hours to the equivalent number of minutes (540 min).
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Solve the two-step equation. 14 = 31.7 – 3x
Alinara [238K]
14 = 31.7- 3x 

-17.7=-3x 

x=5.9
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CaHeK987 [17]

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Step-by-step explanation:

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What is one tenth of 0.04
Lyrx [107]
One tenth is equal to .1 or 1/10

and .04 is nothing but 4/100

So just multiply them together:

1/10 x 4/100 = 4/1000

And since there are 3 0's we need to move the decimal spot 3 places the the left:

.004

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4 0
2 years ago
An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 280 engines
DENIUS [597]

Answer:

The value of the test statistic is t = -2.09

Step-by-step explanation:

The null hypothesis is:

H_{0} = 6.6

The alternate hypotesis is:

H_{1} \neq 6.6

Our test statistic is:

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation(square roof of the variance) and n is the size of the sample.

In this problem, we have that:

X = 6.5, \mu = 6.6, \sigma = \sqrt{0.64} = 0.8, n = 280

So

t = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

t = \frac{6.5 - 6.6}{\frac{0.8}{\sqrt{280}}}

t = -2.09

The value of the test statistic is t = -2.09

4 0
3 years ago
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