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Ket [755]
3 years ago
10

Which of the following represents the sentence shown? “Twice a number, n, decreased by six is fourteen.”

Mathematics
1 answer:
Fed [463]3 years ago
8 0
Twice the number n will be expressed as 2n.  So, that will be in our final answer.  In order to decrease the number by 6, we will subtract 6.  So there will be a - 6 in our final answer.  Together, this is 2n - 6, and that is the same as the second option.  So, the second option is the correct one.
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LenaWriter [7]

Step-by-step explanation:

ii) reflexive property

iii) AAS

7 0
2 years ago
In a random sample of 200 Americans, 51% said they favor building more nuclear power plants. In a random sample of 150 French, 4
Varvara68 [4.7K]

Answer:

Yes, there is enough evidence to say the proportions are the same.

Step-by-step explanation:

Null hypothesis: The proportions are the same.

Alternate hypothesis: The proportions are not the same.

Data given:

p1 = 51% = 0.51

n1 = 200

p2 = 48% = 0.48

n2 = 150

pooled proportion (p) = (n1p1 + n2p2) ÷ (n1 + n2) = (200×0.51 + 150×0.48) ÷ (200 + 150) = 174 ÷ 350 = 0.497

Test statistic (z) = (p1 - p2) ÷ sqrt[p(1-p)(1/n1 + 1/n2) = (0.51 - 0.48) ÷ sqrt[0.497(1-0.497)(1/200 + 1/150)] = 0.03 ÷ 0.054 = 0.556

The test is a two-tailed test. At 0.10 significance level the critical values -1.645 and 1.645

Conclusion:

Fail to reject the null hypothesis because the test statistic 0.556 falls within the region bounded by the critical values.

8 0
3 years ago
What is four hundred twenty times six
lianna [129]
To do this without a calculator, it may be easier to break the number into smaller parts.
420 * 6
= (400 * 6) + (20 * 6)
= 2400 + 120
= 2520

Hope this helps! :)
6 0
3 years ago
Read 2 more answers
Do the ratios 5:3 and 13:8 form a proportion?
shepuryov [24]

Answer:

  No

Step-by-step explanation:

Each ratio is irreducible, and they are different. Hence they are not the same value, so cannot be a proportion. A proportion is two equal ratios.

  5 : 3 = 40 : 24

  13 : 8 = 39 : 24 . . . . not the same as 40 : 24

_____

<em>Examples of proportions</em>

  5/3 = 40/24 . . . is a proportion

  13/8 = 39/24 . . . is a proportion

4 0
3 years ago
If you could be a doll and help me, that would be wonderful :)
NikAS [45]
The answer to this question of yours is B
7 0
3 years ago
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