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Lelechka [254]
2 years ago
6

Whitch numbre produces a rational number when multiplied by 1/3 ?

Mathematics
1 answer:
garik1379 [7]2 years ago
4 0

Answer:

Step-by-step explanation:

multiplication of two rational numbers produce a rational number.

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Triangle XYZ is a right triangle.
Alecsey [184]

Answer:

1.) 5

2.) 6

Step-by-step explanation:

3 0
2 years ago
In September 2011, Gallup surveyed 1,004 American adults and asked them whether they blamed Barack Obama a great deal, a moderat
Alexus [3.1K]

Answer:

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 1004, \pi = 0.53

99% confidence level

So \alpha = 0.01, z is the value of Z that has a pvalue of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.4894

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.53 - 2.575\sqrt{\frac{0.53*0.47}{1004}} = 0.5706

The 99% confidence interval for the proportion of all American adults who blame Barack Obama a great deal or a moderate amount for U.S. economic problems is (0.4894, 0.5706)..

3 0
2 years ago
What’s a random sample survey
Fudgin [204]

Answer:

its a variety of selection techniques in which sample members are selected by chance


Step-by-step explanation:


4 0
3 years ago
Which set of ordered pairs in the form of (x,y) does not represent a function of x? {(-1,2), (3,-2),(0,1),(5,2}
serg [7]
For a relation to be a function it must be one-to-one or many-to-one.

One-to-many relation is not a function.

In the above options, C is One-to-many relation therefore cannot be a function.

The reason is that 3 alone maps onto -2 and 5, in the ordered pairs (3,-2) and (3,5). This disqualifies it from being a function.

Hence the graph of this relation will not pass the vertical line test

The correct answer is C
5 0
3 years ago
Which graph represents the solution to this system of inequalities? y ≤ -2x y > 3x − 4
Evgesh-ka [11]

Answer:

Option A,

Only that graph represents the solution to the given system of inequalities.

Answered by GAUTHMATH

3 0
3 years ago
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