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ivann1987 [24]
3 years ago
14

What is the sum of 1/10+8/100

Mathematics
2 answers:
galben [10]3 years ago
8 0
\frac{1}{10} + \frac{8}{100} = \frac{10}{100} + \frac{8}{100}= \frac{10+8}{100}=\frac{18}{100} = \frac{9}{50}
Ket [755]3 years ago
7 0
1/10 + 8/100

1 x 10 = 10
10 x 10 = 100

10/100 + 8/100

18/100 is the answer.
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A poll indicates that ​% of a​ country's adults favor a ban on assault weapons. Suppose adults in a certain region are randomly
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Complete Question

poll indicates that 47% of a country's adults favor a ban on assault weapons. Suppose 330 adults in a certain region are randomly surveyed and 161 say they favor a ban. Based on this sample, test using alpha = 0.025 whether the proportion of the region's residents who favor the ban is different from the proportion given in the poll for the country as a whole. Report the p-value for this hypothesis test.

Identify the null and alternative hypotheses for this test. Let p be the population proportion of the region's residents who favor a ban on assault weapons.

A.

H_o: p \ge  0.47\\\\ H_A\  p < 0.47

B

 H_o: p \le\  0.47\\\\ H_A\  p > 0.47

C

 H_o: p \ne  \  0.47\\\\ H_A\  p =  0.47

D

 H_o: p =  \ 0.47\\\\ H_A\  p \ne  0.47

Perform the test using a normal approximation. Identify the test statistic. (Round to two decimal places as needed.)

Identify the p-value. (Round to three decimal places as needed.)

State the conclusion for this hypothesis test.

Answer:

The correct option is D

The test statistics is  z = 0.6116

The p-value  p-value= 0.5408

The conclusion

There no sufficient evidence to state that the proportion of the region's residents who favor the ban is different from the proportion given in the poll for the country as a whole.

Step-by-step explanation:

From the question we are told that  

  The population proportion is  p = 0.47

  The sample size is  n  =  330

  The number that favor the ban is k= 161

  The level of significance is \alpha = 0.025

The null hypothesis is  H_o : p =0.47

The alternative hypothesis is H_a : p \ne  0.47

Generally sample proportion is mathematically represented as

        \^p = \frac{k}{n}

=>     \^p = \frac{161}{330}

=>     \^p = 0.4879

Generally the test statistics is mathematically represented as

       z = \frac{\^ p - p }{\sqrt{\frac{p(1 - p)}{n}  } }

=>    z = \frac{0.4879 - 0.47 }{\sqrt{\frac{ 0.47 (1 - 0.47)}{ 330}  } }

=>    z = 0.6116

From the z table the area under the normal curve to the right corresponding to  0.6116 is  

       P( Z >  0.6116 ) = 0.2704

given that is a two tailed test the p-value is mathematically represented as

     p-value= 2 * 0.2704

      p-value= 0.5408

From the values obtained we see that  p-value > \alpha  so  

The decision rule  is

Fail to reject the null hypothesis

The conclusion

There no sufficient evidence to state that the proportion of the region's residents who favor the ban is different from the proportion given in the poll for the country as a whole

6 0
3 years ago
Factor of polynomial. 2x^4 + 4x^3 + 6^2
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Answer:

2(x^4+2x^3+18)

Step-by-step explanation:

1.)2x^4+4x^3+6^2                    

2.)2x^4+4x^3+36

3.)2(x^4+2x^3+18)

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Walgreens is offered a chain discount on cosmetics from Libby Corp. of 8/5/2; Roma Company offers a chain discount of 7/6/4. Wha
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Answer: 0.0160768

Step-by-step explanation:

Let the marked price of the cosmetic be 100.

From the question,

Walgreens is offered a chain discount on cosmetics from Libby Corp. of 8%, 5% and 2%. The selling price of the cosmetic after the chain discount will be:

100 × (1 - 8/100) × (1 - 5/100) × (1 - 2/100)

= 100 × (1 - 0.08) × (1 - 0.05) × (1 - 0.02)

= 85.652

Discount = Marked price - Selling price

Discount = 100 - 85.652

Discount = 14.348

Discount percent = 14.348% = 0.14348

Roma Company offers a chain discount of 7%, 6% and 4%.

The selling price of the cosmetic after the chain discount will be:

100 × (1 - 7/100) × (1 - 6/100) × (1 - 4/100)

= 100 × (1 - 0.07) × (1 - 0.06) × (1 - 0.04)

= 83.9232

Discount = Marked price - Selling price

Discount = 100 - 83.9232

Discount = 16.0768

Discount percent = 16.0768% = 0.0160768

The highest discount offered is 0.0160768.

8 0
2 years ago
The inside of an oven is set to rise to a temperature of 298 so far it has risen 76% of this amount
liubo4ka [24]

Answer:

76% of 298 would be 226.48

Step-by-step explanation:HOPE THIS HELPED <3

6 0
3 years ago
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Two containers, A and b begin with equal volumes of liquid. 120 mL is then poured from a to B. Container b now contains four tim
mart [117]
If n is used as the initial amount of liquid in both A and B:

4(n-120) = n+120
4n-480 = n+120
3n = 600
n = 200

Each container originally held 200ml. Container A now has 80ml and Container B has 320ml
6 0
3 years ago
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