3 years ago

NEED HELP ASAP!!!!!!!

Mathematics

2 answers:

azamat3 years ago

8 0

Answer:

The answer is C, have a great day!

barxatty [35]3 years ago

6 0

Answer:

Step-by-step explanation:

answer C

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Plug in 6 for x and solve out for f(x)

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3 years ago

Find two numbers if their sum is 115 and their difference is 7

kobusy [5.1K]

Answer:

54+61

Step-by-step explanation:

54 + 61 = 115

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3 years ago

Nancy also has a mirror that measures 20.32 centimeters long. What is the length of Nancy’s mirror in inches?

tino4ka555 [31]

Answer:

C: 8.00

Step-by-step explanation:

1 in = 2.54 cm

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3 years ago

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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:

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

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

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

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The value of the test statistic is $t = -2.09$

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Answer:

Step-by-step explanation:

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2 years ago

Read 2 more answers