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3241004551 [841]
4 years ago
8

Help please!!!!!!!!!!!

Mathematics
1 answer:
Pepsi [2]4 years ago
4 0
The first one plane GHI
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If the bill is $47.96 and you leave a 15% tip, what is the tip amount?​
Gennadij [26K]

Answer:

7.19 is the tip

Step-by-step explanation:

Take the amount of the bill and multiply by the tip percentage

47.96 * 15%

Change to decimal form

47.96 * .15

7.194

Round to 2 decimal places

7.19

7 0
3 years ago
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Sara wants to keep her phone bill under $40 each month. There is a flat fee of $34 and she is charged $0.05 per text message, t.
alukav5142 [94]

Answer:

320 messages

Step-by-step explanation:

20 messages per dollar,

20 x 16 equals 320

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3 years ago
Which characteristics best describe the undefined concept?
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Line. A line would have a length but has no width
4 0
3 years ago
You conduct a simulation regarding which team spectators at a football game support. Your null hypothesis is that there are equa
Llana [10]

Answer:

As the <em>p</em>-value is too small the null hypothesis will be rejected concluding that there is a higher proportion of people supporting the home team.

Step-by-step explanation:

The hypothesis to determine which team spectators at a football game support is:

<em>H₀</em>: There are equal proportions of people supporting the home team and the visiting team, i.e. <em>p</em>₁ = <em>p</em>₂.

<em>Hₐ</em>: There is a higher proportion of people supporting the home team than the visiting team, i.e. <em>p</em>₁ > <em>p</em>₂.

A <em>z</em>-test for difference between proportions can be used to perform the test.

The test statistic is:

z=\frac{\hat p_{1}-\hat p_{2}}{\sqrt{P(1-P)\frac{1}{n_{1}}+\frac{1}{n_{2}}}}}

Th decision rule is:

If the <em>p</em>-value of the test is less than the significance level <em>α </em>then the null hypothesis will be rejected and vice-versa.

The commonly used significance levels are 0.01, 0.05 and 0.10.

The <em>p</em>-value of the test is computed as, <em>p</em> = 0.002.

The <em>p</em>-value of the test is less than all the significance level.

Thus, the null hypothesis will be rejected at any of the three significance level.

Conclusion:

As the <em>p</em>-value is too small the null hypothesis will be rejected concluding that there is a higher proportion of people supporting the home team.

7 0
4 years ago
What is 90 percent of 20 percent
Tom [10]

Answer:

18

Step-by-step explanation:

Every 2 is 10 percent.

2 x 9 = 18.

The answer is 18.

6 0
3 years ago
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