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antiseptic1488 [7]
2 years ago
8

Solve x plssssss :)))))

Mathematics
1 answer:
blondinia [14]2 years ago
7 0

Answer:

x = 43

Step-by-step explanation:

180 - 65 = 115

115 = x + 72

<u>-72        -72 </u>

43 = x

x = 43

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Factor this polynomial completely.
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Answer:

(x-4) (x-4)

Step-by-step explanation:

foil [first, outside, inside, last]

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39 and 86.

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39 and 86 equal 125 when added. When 47 is subtracted from 86 you get 39.

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Solving Quadratic Equations using the Square Root Property
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Answer:

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3 years ago
In a survey of 2065 adults in a certain country conducted during a period of economic uncertainty, 63 % thought that wages paid
LenKa [72]

Answer:

a) D.The interpretation is flawed. No interval has been provided about the population proportion.

b) D.The interpretation is flawed. The interpretation indicates that the level of confidence is varying.

c) A.The interpretation is reasonable.

d) C.The interpretation is flawed. The interpretation suggests that this interval sets the standard for all the other intervals, which is not true.

Step-by-step explanation:

(a) We are 95 % confident 63 % of adults in the country during the period of economic uncertainty felt wages paid to workers in industry were too low. Is the interpretation reasonable?

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The sample proportion alone will not give us any confidence in estimating the true proportion of adults in the country during the period of economic uncertainty felt wages paid to workers in industry were too low.

We need a 95% confidence interval to claim that the true proportion is within this interval. In this case, as the margin of error is 4%, the 95% CI is 59% and 67%.

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A.The interpretation is reasonable.

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(d) In 95 % of samples of adults in the country during the period of economic uncertainty, the proportion who believed wages paid to workers in industry were too low is between 0.59 and 0.67. Is the interpretation reasonable?

C.The interpretation is flawed. The interpretation suggests that this interval sets the standard for all the other intervals, which is not true.

This confidence interval is an estimation about the parameter of the population. It doesn't give information to estimate the sampling distribution, as it only has information of one specific sample.

6 0
3 years ago
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