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Masteriza [31]
3 years ago
9

How many planes appear in the figure​

Mathematics
1 answer:
Mice21 [21]3 years ago
7 0

Answer:

4

Step-by-step explanation:

j

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An article reports that blue eyed people earn less than brown eyed people, with these numbers: average blue-eyed salary $35,000,
stepladder [879]

Answer:

There is not enough evidence to support the claim that blue eyed people earn less than brown eyed people.

Step-by-step explanation:

In this case, we need to test whether the blue eyed people earn less than brown eyed people.

Let sample 1 denote the salary of blue eyed people and sample 2 denote the salary of brown eyed people.

The hypothesis to test the claim can be defined as follows:

<em>H₀</em>: The average salary of blue eyed people is not less than that for brown eyed people, i.e. <em>μ</em>₁ - <em>μ</em>₂ ≥ 0.

<em>Hₐ</em>: The average salary of blue eyed people is less than that for brown eyed people, i.e. <em>μ</em>₁ - <em>μ</em>₂ < 0.

It is provided that the <em>p</em>-value of the test is, <em>p</em>-value = 0.45.

The decision rule is:

If the <em>p</em>-value of the test is less than the significance level then the null hypothesis will be rejected and vice-versa.

The <em>p</em>-value of the test is 0.45.

The <em>p</em>-value of the test is very large for all the commonly used significance level. The null hypothesis will not be rejected.

Thus, it can be concluded that there is not enough evidence to support the claim that blue eyed people earn less than brown eyed people.

3 0
3 years ago
For which pair of functions is the vertex of k(x)7 units below the vertex of f(x)?
kvv77 [185]

Answer: Option C

f(x) = x^2;\ k (x) = x ^ 2 -7

Step-by-step explanation:

Whenever we have a main function f(x) and we want to transform the graph of f(x) by moving it vertically then we apply the transformation:

k (x) = f (x) + b

If b> 0 then the graph of k(x) will be the graph of f(x) displaced vertically b units down.

If b> 0 then the graph of k(x) will be the graph of f(x) displaced vertically b units upwards.

In this case we have

f (x) = x ^ 2

We know that this function has its vertex in point (0,0).

Then, to move its vertex 7 units down we apply the transformation:

k (x) = f (x) - 7\\\\k (x) = x ^ 2 -7.

Then the function k(x) that will have its vertex 7 units below f(x) is

k (x) = x ^ 2 -7

3 0
3 years ago
The number line below represents the lengths, in inches, of fish that can be kept when caught on a certain lake. What does the s
o-na [289]

Answer:

the answer is the third one.

Step-by-step explanation:

the number line is closed circle and at least means greater than or equal to so the answer is "C".

8 0
3 years ago
1 3 2 1
Anon25 [30]

The answer is 1/3x + 2/4 .

7 0
2 years ago
What's the value of X
ss7ja [257]

Since the triangle is isosceles we know that angle a is equal to angle c.

8y-7=73

8y=80

y=10

We also know that the sum of the interior angles in any triangle is 180 degrees.

73+73+6x+4=180

150+6x=180

6x=30

x=5

3 0
3 years ago
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