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m_a_m_a [10]
2 years ago
10

Cooper earned $214.50 at his job when he worked for 13 hours. How much money did he earn each hour?

Mathematics
1 answer:
Lerok [7]2 years ago
8 0

Answer:

$16.50

Step-by-step explanation:

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Hannah sells real estate. She is paid 4% of the sale price of every house she sells. What is Hannah paid for selling a house at
Mariulka [41]

Answer:

$11,000

Step-by-step explanation:

275,000×4% = 11,000

8 0
2 years ago
If you are doing area in mathematics and the base is 16 and the height is 5 but there are 4 sides, don't u need to multiply 16x5
Murrr4er [49]
No, you would only need to multiply 16 by 5 once
4 0
3 years ago
Some transportation experts claim that it is the variability of speeds, rather than the level of speeds, that is a critical fact
scZoUnD [109]

Answer:

Explained below.

Step-by-step explanation:

The claim made by an expert is that driving conditions are dangerous if the variance of speeds exceeds 75 (mph)².

(1)

The hypothesis for both the test can be defined as:

<em>H</em>₀: The variance of speeds does not exceeds 75 (mph)², i.e. <em>σ</em>² ≤ 75.

<em>Hₐ</em>: The variance of speeds exceeds 75 (mph)², i.e. <em>σ</em>² > 75.

(2)

A Chi-square test will be used to perform the test.

The significance level of the test is, <em>α</em> = 0.05.

The degrees of freedom of the test is,

df = n - 1 = 55 - 1 = 54

Compute the critical value as follows:

\chi^{2}_{\alpha, (n-1)}=\chi^{2}_{0.05, 54}=72.153

Decision rule:

If the test statistic value is more than the critical value then the null hypothesis will be rejected and vice-versa.

(3)

Compute the test statistic as follows:

\chi^{2}=\frac{(n-1)\times s^{2}}{\sigma^{2}}

    =\frac{(55-1)\times 94.7}{75}\\\\=68.184

The test statistic value is, 68.184.

Decision:

cal.\chi^{2}=68.184

The null hypothesis will not be rejected at 5% level of significance.

Conclusion:

The variance of speeds does not exceeds 75 (mph)². Thus, concluding that driving conditions are not dangerous on this highway.

7 0
3 years ago
A farmer grows two types of grain in his fields. He has a seed budget of $17,000.00 and has spent $9,200.00 to plant wheat seed
Helen [10]
Okay so first you have to subtract 17000 from 9200 to see how much money you have left to spend. Then once you get that number, which is 7800, you have to see what's that maximum number of acres that you can get. So you divide 7800 from 41.00 and you can get your answer. Your answer will be 190 acres. 190 acres is the highest you can go without going over budget.
8 0
3 years ago
For every $10 Helen takes home, her employer withholds $3 for taxes and social security. Helen's gross pay each month is $1950.
goldfiish [28.3K]

$1,671.43 I believe is the answer

3 0
3 years ago
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