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Andrei [34K]
3 years ago
14

Last year there were 145 pies baked for the bake sale this year k pies baked using k write a expression for the total number of

pies baked in the two years
Mathematics
1 answer:
allsm [11]3 years ago
5 0

Answer:

The number of pies baked in the two years = ( k + 145) pies

Step-by-step explanation:

Here, we are interested in writing an expression for the total number of pies baked in the two years.

Last year, the number of pies baked = 145

This year the number of pies baked = k

Thus, the total number of pies baked in the two years will be ( k + 145) pies

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The mean annual tuition and fees for a sample of 12 private colleges was 36,800 with a standard deviation of 5,000 . A dotplot s
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Answer:

The value of the test statistic and degrees of freedom is 2.148 and 11 respectively.

Step-by-step explanation:

Consider the provided information.

The mean annual tuition and fees for a sample of 12 private colleges was 36,800 with a standard deviation of 5,000 .

Thus, n = 12, \bar x=36800 σ = 5000

degrees of freedom = n-1 = 12-1 = 11

H_0: \mu = 33700\ and\ H_a: \mu \neq 33700

Formula to find the value of z is: z=\frac{\bar x-\mu}{\frac{\sigma}{\sqrt{n}}}

Where \bar x is mean of sample, μ is the mean of population, σ is the standard deviation of population and n is number of observations.

z=\frac{36800-33700}{\frac{5000}{\sqrt{12}}}

z=2.148

Hence, the value of the test statistic and degrees of freedom is 2.148 and 11 respectively.

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3 years ago
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8 0
2 years ago
In a school, the ratio of soccer players to volleyball players is 4 : 1.
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4:1 means for every four soccer player there is 1 volleyball player

that means there are four times the number of soccer players than volleyball players
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What is 4 divided by 6 + 89 - 34 -89 +190
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4/(6+89-34-89+190)
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