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Viktor [21]
3 years ago
8

The tax rate is 3.9%. What is the tax on $42?

Mathematics
2 answers:
MArishka [77]3 years ago
7 0

Answer:

1.64

Step-by-step explanation:

To find the tax, multiply the cost by the tax rate

42 * 3.9%

Change to decimal form

42 *.039

1.638

Round to the nearest cent

1.64

grigory [225]3 years ago
3 0

Answer:

$43.64

Step-by-step explanation:

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The authors of a paper concluded that more boys than girls listen to music at high volumes. This conclusion was based on data fr
schepotkina [342]

Answer:

Since the calculated value of z= 2.82  does not lie in the critical region  the null hypothesis is accepted and it is concluded that the sample data support the authors' conclusion that the proportion of the country's boys who listen to music at high volume is greater than this proportion for the country's girls.

The value of p is 0 .00233. The result is significant at p < 0.10.

Step-by-step explanation:

1) Let the null and alternate hypothesis be

H0:  μboys − μgirls > 0

against the claim

Ha: μboys − μgirls ≤ 0

2) The significance level is set at 0.01

3) The critical region is z  ≤  ± 1.28

4) The test statistic

Z= p1-p2/ sqrt [pcqc( 1/n1+ 1/n2)]

Here p1= 397/768= 0.5169  and p2= 331/745=0.4429

pc = 397+331/768+745

pc= 0.4811

qc= 1-pc= 1-0.4811=0.5188

5) Calculations

Z= p1-p2/ sqrt [pcqc( 1/n1+ 1/n2)]

z= 0.5169-0.4429/√ 0.4811*0.5188( 1/768+  1/745)

z= 2.82

6) Conclusion

Since the calculated value of z= 2.82  does not lie in the critical region  the null hypothesis is accepted and it is concluded that the sample data support the authors' conclusion that the proportion of the country's boys who listen to music at high volume is greater than this proportion for the country's girls.

7)

The value of p is 0 .00233. The result is significant at p < 0.10.

8 0
2 years ago
What two numbers multiply to 11 and add to -16
VladimirAG [237]
They're irrational numbers, so they can't be exactly written down.
Rounded to the nearest thousandth, they are

     - 15.280
and
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3 years ago
Read 2 more answers
Easy multiplication and division question
Zigmanuir [339]

The minimum amount of sheets she can use are 4 sheets. 3 sheets contain 10 cookies, and 1 sheet has 6 cookies.

3 0
2 years ago
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The Chinese Institute of Health Statistics reported that of every 7,883 deaths in recent years, 624 resulted from a traffic acci
elena-s [515]

Answer:

7.92% probability that a particular death is due to a traffic accident

Step-by-step explanation:

The relative frequency approach to find the probability that a particular death is due to a traffic accident is the number of deaths due to traffic accidents divided by the total number of deaths.

We have that:

624 deaths from traffic accidents

7883 total deaths.

So

p = \frac{624}{7883} = 0.0792

7.92% probability that a particular death is due to a traffic accident

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2 years ago
Find two consecutive integers whose sum is 67.
Vlada [557]
Let the smaller integer be x.
The next larger consecutive integer is 1 more than x, so it's x + 1.

x + x + 1 = 67

2x + 1 = 67

Answer is option B.
3 0
3 years ago
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