Sofie makes and sells scarves. Her profit depends on what price she charges for a scarf. She writes the expression (x−5)(50−2x) to represent her profit based on the price per scarf, x . Enter Sofie's average change in profit for two different sections of the graph.

Answer:

P = 37.4 m

Step-by-step explanation:

let the third side of the triangle be x

using Pythagoras' identity in the right triangle.

x² + 7² = 16²

x² + 49 = 256 ( subtract 49 from both sides )

x² = 207 ( take square root of both sides )

x = \(\sqrt{207}\) ≈ 14.4 m ( to 1 decimal place )

the perimeter (P) is then the sum of the 3 sides

P = 7 + 16 + 14.4 = 37.4 m

Based on both the p-value method and the critical value method, we fail to reject the null hypothesis and cannot infer that the two groups differ in the mean number of pictures printed.

To determine if the two groups (digital camera owners and standard camera owners) differ in the mean number of pictures printed, we can conduct a hypothesis test using both the p-value method and the critical value method.

Let's define our hypotheses:

Null Hypothesis (\(H_0\)): The mean number of pictures printed is the same for both groups.

Alternative Hypothesis (\(H_1\)): The mean number of pictures printed differs between the two groups.

We'll use a significance level of 0.05 (5%).

First, let's calculate the test statistic for the two-sample t-test using the provided summary statistics:

Digital:

Mean = 18.25

Standard Deviation = 6.5

Sample Size = 8

Standard:

Mean = 16.5

Standard Deviation = 19.2

Sample Size = 8

Using the formula for the two-sample t-test, the test statistic (t) is given by:

\(t = (mean_1 - mean_2) / \sqrt{(s_1^2/n_1) + (s_2^2/n_2)}\)

Substituting the values, we have:

\(t = (18.25 - 16.5) / \sqrt{(6.5^2/8) + (19.2^2/8)}\)

t ≈ 0.75

Now, let's perform the hypothesis test using both methods:

1) P-value Method:

Using the t-distribution with \((n_1 + n_2 - 2)\) degrees of freedom, we can calculate the p-value associated with the test statistic.

The p-value is the probability of observing a test statistic as extreme as the one calculated, assuming the null hypothesis is true.

Using a t-table or statistical software, we find that the p-value corresponding to t ≈ 0.75 is approximately 0.47.

Since the p-value (0.47) is greater than the significance level (0.05), we fail to reject the null hypothesis. There is not enough evidence to conclude that the mean number of pictures printed differs between the two groups.

2) Critical Value Method:

Using the t-distribution with \((n_1 + n_2 - 2)\) degrees of freedom and a significance level of 0.05, we can find the critical value.

The critical value is the value beyond which we would reject the null hypothesis.

For a two-tailed test at a 5% significance level and 14 degrees of freedom (8 + 8 - 2), the critical value is approximately ±2.145.

Since the test statistic (0.75) does not exceed the critical value (±2.145), we fail to reject the null hypothesis. There is not enough evidence to conclude that the mean number of pictures printed differs between the two groups.

In conclusion, based on both the p-value method and the critical value method, we do not have sufficient evidence to infer that the two groups differ in the mean number of pictures printed.

To know more about p-value, refer here:

https://brainly.com/question/2424080

#SPJ4

Answer:

what type of problem is it reading or something eles?

Answer:

give a picture

Step-by-step explanation:

Answer:

7

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

let the third side be x , then

x² + (4\(\sqrt{2}\) )² = 9²

x² + 32 = 81 ( subtract 32 from both sides )

x² = 49 ( take the square root of both sides )

x = \(\sqrt{49}\) = 7

Then the third side is 7

Answer: $1225.50

Step-by-step explanation:

Purchase price = $1075

Discount Percent = 14%

Discount = 14% × $1075

= 0.14 × $1075

= $150.50

Marked price = Purchase price + Discount

= $1075 + $150.50

= $1225.50

Answer:

-6+7

Step-by-step explanation:

you have to change the negatives into a positive.  negative + negative = positive.

Three types of rigid transformations are Reflection, Rotation, and Translation. Rigid transformation, also called isometry.

A rigid transformation, also called isometry,  is a transformation that doesn't change the size or shape of a geometric figure. The following are 3 types of rigid transformation:

1. Reflection

→  is the act of shifting an object's coordinates that flip it across a line without changing its shape or size. Horizontal (draw a figure to the left or right) or vertical (draw a figure to the up or down) reflections are possible. The result of reflection is a mirror image of the figure itself.  

The figure is reflected across \(x-\) or \(y-\) axis, and then change \(x-\) or \(y-\) coordinate.

2. Rotation

→ is the non-modification of an object's size or shape by rotating it around an fixed point. A center of rotation is required to rotate an object. And the rotation did by using a degree.

The figure is rotated by a degree (ex: 90°), and then change \(x-\) or \(y-\) coordinate. Meanwhile, a point's center rotation stays at the same.

3. Translation

→ is sliding a figure in any direction without changing its size, shape, or orientation. Translation could be horizontal (make a figure left or right),  or vertical reflections (make a figure up or down).

Vertical translation is shifting the graph along  \(y-\) axis

Horizontal translation is shifting the graph along  \(x-\) axis.

Here to learn more about Rigid Transformation:

https://brainly.com/question/1462871

#SPJ4

The probability that the spinner will land on a number that is not between 22 and 30, inclusive is 0.62

The given parameters are

Spinner = 1 to 50

This means that

Sections = 50

There are 31 sections that are not between 22 and 30, inclusive

This means that the probability is

P = 31/50

Evaluate

P = 0.62

Hence, the probability that the spinner will land on a number that is not between 22 and 30, inclusive is 0.62

Read more about probability at

https://brainly.com/question/24756209

#SPJ4

If the distribution is skewed to the right, then mean > median

This is where the tail is pulled to the right due to large outliers. Those outliers pull on the mean.

The upper bound of the 95% confidence interval for the average age in the U.S. is 48.29 years.

To determine the upper bound of the 95% confidence interval for the average age in the U.S., we can use the sample data from the survey. The sample size is 1072 people, randomly selected from the U.S. population, with a minimum age of 12. By calculating the average age of the respondents, we can estimate the average age of the entire U.S. population.

Using the given information that the average age of the respondents is 43.56 years, and assuming that the sample is representative of the population, we can calculate the standard error. The standard error measures the variability of the sample mean and indicates how much the sample mean might deviate from the population mean.

Using statistical methods, we can calculate the standard error and construct a confidence interval around the sample mean. The upper bound of the 95% confidence interval represents the highest plausible value for the population average age based on the sample data.

Therefore, based on the provided information and calculations, the upper bound of the 95% confidence interval for the average age in the U.S. is 48.29 years.

Learn more about Confidence intervals

brainly.com/question/32546207

#SPJ11

1/2-3/10=5-3/10=1/5 this is the answer

I think the answer is c.2

Answer: 2.5

Step-by-step explanation:

3 1.4 lbs also equals 3.25

3 x 0.75 = 2.25

2.25 + 25 = 2.5

The magnitude of the electric field E at the midpoint between two 10-cm-diameter charged rings, with charges of -21nC and +21nC and a separation of 30 cm, can be calculated using the electric field formula for a charged ring. The magnitude of the force F on a -1.0nC charge placed at the midpoint can be determined using the equation F = qE, where q is the charge and E is the electric field.

To find the magnitude of the electric field E at the midpoint between the two rings, we can use the formula for the electric field of a charged ring:

E = (k * Q) / (2 * π * r)

Where k is the electrostatic constant (approximately 9 * 10^9 Nm^2/C^2), Q is the charge on the ring, and r is the distance from the center of the ring to the point where the electric field is being measured.

Substituting the given values into the equation, we get:

E = (9 * 10^9 Nm^2/C^2 * 21nC) / (2 * π * 0.15m)

Calculating this expression, we find that the magnitude of the electric field at the midpoint is approximately 22,192 N/C.

To find the magnitude of the force F on a -1.0nC charge placed at the midpoint, we can use the equation F = qE, where q is the charge and E is the electric field. Substituting the values, we get:

F = (-1.0nC) * (22,192 N/C)

Calculating this expression, we find that the magnitude of the force on the charge is approximately 22,192 nN.

Learn more about equation here:  brainly.com/question/30130739

#SPJ11

Each transformation affects the shape and position of the graph. It is important to carefully consider the order of the transformations and their impact on the equation.

1. Horizontal Shift (c):
If there is a horizontal shift, the equation becomes y = (x - c)^3.
For example, if there is a shift of 2 units to the right, the equation would be y = (x - 2)^3.

2. Vertical Shift (d):
If there is a vertical shift, the equation becomes y = x^3 + d.
For example, if there is a shift of 3 units upwards, the equation would be y = x^3 + 3.

3. Vertical Stretch (a):
If there is a vertical stretch or compression, the equation becomes y = a * x^3.
For example, if there is a vertical stretch by a factor of 2, the equation would be y = 2 * x^3.

4. Reflection (along the x-axis):
If there is a reflection along the x-axis, the equation becomes y = -x^3.
This flips the graph of the original function upside down.

5. Reflection (along the y-axis):
If there is a reflection along the y-axis, the equation becomes y = (-x)^3.
This mirrors the graph of the original function.

6. Combined Transformations:
If there are multiple transformations, we can apply them in the order they are given. For example, if there is a vertical stretch by a factor of 2 and a horizontal shift of 3 units to the right, the equation would be y = 2 * (x - 3)^3.

Remember, each transformation affects the shape and position of the graph. It is important to carefully consider the order of the transformations and their impact on the equation.

To know more about equation here:

brainly.com/question/29292690

#SPJ11

The sum of the first four terms of the sequence is 22.

In this question,

The formula of sum of linear sequence is

\(S_n =\frac{n}{2}(2a+(n-1)d)\)

The sum of the first ten terms of a linear sequence is 145

⇒ \(S_{10} =\frac{10}{2}(2a+(10-1)d)\)

⇒ 145 = 5 (2a+9d)

⇒ \(\frac{145}{5} =2a+9d\)

⇒ 29 = 2a + 9d  ------- (1)

The sum of the next ten term is 445, so the sum of first twenty terms is

⇒ 145 + 445

⇒ \(S_{20} =\frac{20}{2}(2a+(20-1)d)\)

⇒ 590 = 10 (2a + 19d)

⇒ \(\frac{590}{10}=2a+19d\)

⇒ 59 = 2a + 19d -------- (2)

Now subtract (2) from (1),

⇒ 30 = 10d

⇒ d = \(\frac{30}{10}\)

⇒ d = 3

Substitute d in (1), we get

⇒ 29 = 2a + 9(3)

⇒ 29 = 2a + 27

⇒ 29 - 27 = 2a

⇒ 2 = 2a

⇒ a = \(\frac{2}{2}\)

⇒ a = 1

Thus, sum of first four terms is

⇒ \(S_4 =\frac{4}{2}(2(1)+(4-1)(3))\)

⇒ \(S_4 =2(2+(3)(3))\)

⇒ S₄ = 2(2+9)

⇒ S₄ = 2(11)

⇒ S₄ = 22.

Hence we can conclude that the sum of the first four terms of the sequence is 22.

Learn more about sum of sequence of n terms here

https://brainly.com/question/20385181

#SPJ4

C. No, the hypotenuse of a right triangle cannot be longer than both legs.

We know a right-angled triangle has three sides they are -: Hypotenuse,

Opposite and Adjacent.

We can remember SOH CAH TOA which is,

sin = opposite/hypotenuse, cos = adjecen/hypotenuse and

tan = opposite/adjacent.

We know the range of a sine function is [- 1, 1].

We also know the length of the hypotenuse in a right-angled triangle is

the largest side but less than the sum of two other sides and a right triangle's hypotenuse cannot be longer than its two legs.

learn more about trig ratios here :

https://brainly.com/question/14977354

#SPJ5

Answer:d or c

Step-by-step explanation:

Answer:

i took the test its NOT B !

Step-by-step explanation:

Answer:

1. PO = 21

2. LO = 27

3. PL = 34.2

Step-by-step explanation:

1. Since P is the incenter, that means it is equidistant to each side at a right angle. As a result PN, PO, and PM are equal to each other.

We know that PN is 21. Since PN and PO are equal to one another, PO = 21.

2. ML is equal to LO. ML is 27, so LO is also 27.

3. To get PL you will have to do the Pythagorean Theorem. Square the legs and set it equal to the hypotenuse squared.

* It should be: 27^2 + 21^2 = x^2.

Once you solve and round to the nearest tenth, you will get 34.2.

The relationships between the angles x and y are given as follows:

Alternate interior angles. and Alternate exterior angles.

Vertical angles are angles that are on the opposite by the same vertex, and in item 1, the vertex is the intersection of the upper parallel line with the transversal, hence angles x and y are vertical angles.

Alternate Interior angles;

These are the angles that are on the inner side of the two parallel lines but on opposite sides relative to the transversal, therefore, on item 2 x and y are alternative interior angles.

The Corresponding angles are angles that are on the same position relative to the transversal line, but relative to different parallel lines, thus on item x and y are corresponding angles.

Alternate Exterior angles;

There are angles that are on the opposite sides of the transversal line, and one above the upper parallel line and the other below the lower parallel line, shows that angles x and y are alternate exterior angles in item 4.

More can be learned about parallel lines and pairs of angles at brainly.com/question/24607467

#SPJ2

Answer:

Step-by-step explanation: 80

Answer: THE ANSWER IS 28%

worked it out on the calculator in the end

Step-by-step explanation:

One-way ANOVA is applied to independent samples taken from three normally distributed populations with equal variances. The null hypothesis for this procedure is:

H0: μ1 = μ2 = μ3

This means that there are no significant differences between the means of the three normally distributed populations.

One-way ANOVA: One-way ANOVA is a statistical test used to compare the means of three or more independent groups.

Null hypothesis: The null hypothesis for one-way ANOVA is that the means of all the groups are equal.

Alternative hypothesis: The alternative hypothesis, which is accepted if the null hypothesis is rejected, is that at least one of the population means is different from the others.

In this case, the alternative hypothesis is: Ha: At least one of the means is different Test statistic: The test statistic used in one-way ANOVA is the F-statistic.

A small p-value (usually less than 0.05) indicates strong evidence against the null hypothesis.

Decision: If the p-value is less than the significance level (usually 0.05), we reject the null hypothesis and conclude that at least one of the population means is different from the others.

Learn more about One-way ANOVA:

https://brainly.com/question/23638404

#SPJ11

The integral evaluates to \((sin^3(x))/3 - (sin^5(x))/5 + C.\) by evaluate the integral \(\int cos^3(x) sin^2(x) \,dx\),  using the trigonometric identity

To evaluate the integral \(\int cos^3(x) sin^2(x) \,dx\), we can use the trigonometric identity \(cos^2(x) = 1 - sin^2(x)\) to rewrite the integral as follows:

\(\int cos^3(x) sin^2(x) \,dx = \int cos(x) (1 - sin^2(x)) sin^2(x) \,dx\)

Now, we can apply the substitution \(u = sin(x) , du = cos(x) dx\). This transforms the integral into:

\(\int (1 - u^2) u^2\, du\)

Expanding the expression gives:

\(\int (u^2 - u^4) \,du\)

We can now integrate each term separately:

\(\int u^2 \,du - \int u^4 \,du\)

Integrating each term yields:

\((u^3)/3 - (u^5)/5 + C\)

Finally, substituting back u = sin(x), we have:

\(\int cos^3(x) sin^2(x)\, dx = (sin^3(x))/3 - (sin^5(x))/5 + C\)

Therefore, the integral evaluates to \((sin^3(x))/3 - (sin^5(x))/5 + C.\)by evaluate the integral \(\int cos^3(x) sin^2(x) \,dx\),  using the trigonometric identity

Learn more about trigonometric integrals here:https://brainly.com/question/32835233

#SPJ4

The length of the legs of the right triangle are 2.83 units.

A right tangle triangle is a triangle that has one of its angles as 90 degrees. The sum of angles in a triangle is 180 degrees.

Therefore, the legs of the triangle can be found using trigonometric ratios.

Hence,

sin 45 = opposite / hypotenuse

sin 45 = a / 4

cross multiply

a = 4 × 0.70710678118

a = 2.83 units

Therefore,

cos 45 = b / 4

cross multiply

b = 0.70710678118 × 4

b = 2.82842712475

b = 2.83 units

Therefore, the legs are 2,83 units

learn more on right triangle here: https://brainly.com/question/29285631

#SPJ1

Answer:

91

Step-by-step explanation:

You add the two measures of the intercepted arcs and divide by 2 to get the measure of the central angle.

Hope this helped!! Please leave a rating and/or mark me the BRAINLIEST!!! Thank You :)

Answer:

91

Step-by-step explanation:

You add the two measures of the intercepted arcs and divide by 2 to get the measure of the central angle.

Hope this helped!! Please leave a rating and/or mark me the BRAINLIEST!!! Thank You :)

Answer:

81 - 19 = 62 ÷ 4 = 15.5 days (?)