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1 year ago

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Mathematics

1 answer:

adoni [48]1 year ago

8 0

The critical value is the z-score right at the edge of the rejection region option (A) is correct.

<h3>What is a normal distribution?</h3>

It's the probability curve of a continuous distribution that's most likely symmetric around the mean. On the Z curve, at Z=0, the chance is 50-50. A bell-shaped curve is another name for it.

It is given that:

The z-score is right at the edge of the rejection region.

As we know, the rejection zone is the area in which we have sufficient data to reject the null hypothesis if our test statistic falls within it.

Thus, the critical value is the z-score right at the edge of the rejection region option (A) is correct.

Learn more about the normal distribution here:

brainly.com/question/12421652

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Which is an extraneous solution of the exponent x+sqrtx=6

zheka24 [161]

First, we can simplify it down.
x = (-x + 6)^2
Then, you should have x - ( $x^{2}$ - 12x + 36).
Factor it to get x = 4 or 9. 4 works in the original equation but 9 does not.

3 0

2 years ago

Can anyone help me find the (?,?) coordinates? The given shape is a parallelogram.

Sonja [21]

The missing coordinates of the parallelogram is (m + h, n).

Solution:

Given shape is a parallelogram.

Construction: Draw a line joining the diagonals.

<em>In parallelogram, diagonals bisect each other.</em>

Solve it using mid-point formula:

$$\text{Midpoint} =\left( \frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}\right )$

Here $x_1=m, y_1=n, x_2=h, y_2=0$

$$\text{Midpoint} =\left( \frac{m+h}{2}, \frac{n+0}{2}\right )$

$$\text{Midpoint} =\left( \frac{m+h}{2}, \frac{n}{2}\right )$

Using this midpoint find the missing coordinate.

$$\text{Midpoint} =\left( \frac{x_1+x_2}{2}, \frac{y_1+y_2}{2}\right )$

Let the missing coordinates by x and y.

Here $x_1=0, y_1=0, x_2=x, y_2=y$

$$\text{Midpoint}=\left( \frac{0+x}{2}, \frac{0+y}{2}\right )$

$$\left( \frac{m+h}{2}, \frac{n}{2}\right )=\left( \frac{0+x}{2}, \frac{0+y}{2}\right )$

$$\left( \frac{m+h}{2}, \frac{n}{2}\right )=\left( \frac{x}{2}, \frac{y}{2}\right )$

Now equate the x-coordinates and y-coordinates.

$$ \frac{m+h}{2}=\frac{x}{2}, \ \ \ \frac{n}{2} = \frac{y}{2}$

Multiply by 2 on both sides of the equation, we get

m + h = x, n = y

x = m + h and y = n

Hence the missing coordinates of the parallelogram is (m + h, n).

7 0

2 years ago

Select the correct answer from each drop-down menu.

Alex

Answer:

x=52 Y=50 Z=45

Step-by-step explanation:

hope this can help you

3 0

2 years ago

Which number classified as a terminating decimal number?

Ugo [173]

The answer is the option D: D)none of the above.
The explanation is shown below:
By definition, a terminating decimal must have finite numbers of digits and it must be a rational number, which means that it can be written as a simple fraction whose numerator and denominator must be integers.
Keeping the information above on mind,you have that the option A does not have finite digits, and the options B and C can't be written as a simple fraction. Therefore, the answer is the option D.

4 0

2 years ago

A beautiful cake was presented at a wedding reception. The cake measured 13.5 inches tall, including the decorative icing on top

Schach [20]

Using proportions, it is found that the thickness of the icing between the layers, in inches, is of:

E 1 inch

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount.

In this problem, there are six layers, each measuring 1.25 inches tall, hence the height of these layers is:

6 x 1.25 = 7.5 inches

Then the height of the icing between the layers is of:

13.5 - 7.5 = 6 inches

Six layers, hence each icing is of:

6/6 = 1 inch

More can be learned about proportions at brainly.com/question/24372153

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1 year ago