The wholesale price of a bicycle is $120. If the store wants to mark up the bicycle 40%, what is the final price

Answer:

-4/3

Step-by-step explanation:

The formula for slope is [ y2-y1/x2-x1 ].

-3-5/8-2

-8/6

-4/3

Best of Luck!

Answer:

-4/3

Step-by-step explanation:

You can use rise/run. The rise (y values) goes from 5 to -3. You subtract 8 for this. The run (x values) goes from 2 to 8. You add 6 for this. the proportion is -8/6, which can be simplified to -4/3.

Therefore, the slope is -4/3!

Hope I helped!!!!!!

Answer:

yuuurrrppp

Step-by-step explanation:

The correlation between your daily calorie intake and your GPA is not likely to be immediately apparent, and it would require further investigation to determine whether there is a positive or negative correlation, or no linear relationship between the two variables.

It is difficult to predict the correlation between your daily calorie intake and your GPA as they are not obviously related variables. However, it is possible that there may be a weak or indirect relationship between the two variables.

          If a person is consuming a well-balanced diet with the right amount of nutrients, vitamins, and minerals, they may have the energy and focus necessary to perform well academically. In this case, there may be a positive correlation between calorie intake and GPA. Alternatively, if a person is consuming an excessive amount of calories from unhealthy foods, they may be more likely to experience health problems that could impact their academic performance. In this case, there may be a negative correlation between calorie intake and GPA.

      On the other hand, there may be no direct linear relationship between the two variables, and other factors such as sleep, stress, exercise, and overall health may have a greater impact on academic performance than daily calorie intake.

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Answer:

all real values

Step-by-step explanation:

the domain is the possible input values

The domain is all real values since we can put in any value for x

Answer:

A) All Real Numbers

Step-by-step explanation:

Just is

After building 18 shelves and 24 tables, the carpenter will have 9 boxes of screws, 80 2x4s, and 39 sheets of plywood leftover.

To find the leftover materials, we need to calculate the total materials used to build 18 shelves and 24 tables, and then subtract that from the total materials the carpenter had on hand.

For 18 shelves, the carpenter used 18 boxes of screws, 36 2x4s, and 72 sheets of plywood. For 24 tables, the carpenter used 48 boxes of screws, 48 2x4s, and 72 sheets of plywood.

So, the carpenter used 66 boxes of screws, 84 2x4s, and 144 sheets of plywood in total.

Subtracting this from the materials on hand, we get 9 boxes of screws, 80 2x4s, and 39 sheets of plywood leftover.

Therefore, the carpenter can potentially use these leftover materials for future projects or sell them to recoup some of their costs.

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det(A) = -5 and det(B) = 9, the determinants of various matrix expressions are as follows: det(AB) = -45, det(3A) = -125, det(A^T) = -5, det(B^-1) = 1/9, and det(B^4) = 6561.

The determinant of a matrix represents a scalar value that provides information about the matrix's properties. Here are the explanations for each determinant calculation:

det(AB): The determinant of the product of two matrices is equal to the product of their determinants. Hence, det(AB) = det(A) * det(B) = (-5) * (9) = -45.

det(3A): The determinant of a scalar multiple of a matrix is equal to the determinant of the original matrix raised to the power of the scalar. Therefore, det(3A) = (3^3) * det(A) = 27 * (-5) = -125.

det(A^T): The determinant of a matrix remains the same when taking its transpose. Hence, det(A^T) = det(A) = -5.

det(B^-1): The determinant of the inverse of a matrix is the reciprocal of the determinant of the original matrix. Thus, det(B^-1) = 1/det(B) = 1/9.

det(B^4): The determinant of a matrix raised to a power is equal to the determinant of the original matrix raised to the same power. Therefore, det(B^4) = (det(B))^4 = (9)^4 = 6561.

These determinants can be useful in understanding the properties and transformations of matrices in various mathematical and scientific applications.

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Answer:

63

Step-by-step explanation:

Use Pythagorean theorem,

base² + altitude² = hypotenuse²

a² + 9² = 12²

       a² = 12² - 9²

      a² = 144 - 81

     a² = 63

      a = √63

The correct answer is b. A normal probability distribution is a continuous probability distribution, which means that it can take on any value within a given range.

This type of distribution is often used to model real-world phenomena that are measured on a continuous scale, such as height or weight. Unlike discrete probability distributions, which have a finite number of possible outcomes, a continuous distribution has an infinite number of possible outcomes. It's important to note that while a normal distribution is continuous, not all continuous distributions are normal. A normal distribution has a specific bell-shaped curve that is defined by its mean and standard deviation, and it is often used in statistical analysis to make predictions about the likelihood of certain events occurring within a given population. In summary, a normal probability distribution is a type of continuous probability distribution that is often used to model real-world phenomena. While it has a specific shape and can be described by its mean and standard deviation, it is not always the best model for every situation.

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The circumference of circle M is 2cm, the correct option is (D) 2 cm.

If circle M is dilated by a scale factor of 3 to obtain circle N, we can determine the circumference of circle M by dividing the circumference of circle N by the scale factor.

The scale factor of 3 means that every linear dimension (such as radius or diameter) in circle N is three times larger than the corresponding dimension in circle M. Since the circumference is directly proportional to the radius or diameter of a circle, we can conclude that the circumference of circle N is three times the circumference of circle M.

Given that the circumference of circle N is 6 cm, we can divide this value by 3 to find the circumference of circle M:

Circumference of circle M = Circumference of circle N / Scale factor

Circumference of circle M = 6 cm / 3

Circumference of circle M = 2 cm

Therefore, the correct answer is:

D. 2 cm

The circumference of circle M is 2 cm.

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The type of sampling described, where the researchers intentionally select a sample with 50% straight and 50% LGBTQ+ respondents, is known as "disproportionate stratified sampling."

A. Disproportionate stratified sampling involves dividing the population into different groups (strata) based on certain characteristics and then intentionally selecting a different proportion of individuals from each group. In this case, the researchers are dividing the population based on sexual orientation (straight and LGBTQ+) and selecting an equal proportion from each group.

B. Availability sampling (also known as convenience sampling) refers to selecting individuals who are readily available or convenient for the researcher. This type of sampling does not guarantee representative or unbiased results and may introduce bias into the study.

C. Snowball sampling involves starting with a small number of participants who meet certain criteria and then asking them to refer other potential participants who also meet the criteria. This sampling method is often used when the target population is difficult to reach or identify, such as in hidden or marginalized communities.

D. Simple random sampling involves randomly selecting individuals from the population without any specific stratification or deliberate imbalance. Each individual in the population has an equal chance of being selected.

Given the description provided, the sampling method of intentionally selecting 50% straight and 50% LGBTQ+ respondents represents disproportionate stratified sampling.

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Answer:

see in step 2, he added 20 at x² + 8x - 70 and 0

but he must add 70 at  x² + 8x - 70 and 0 to have x² + 8x = 70

Step-by-step explanation:

The volume of the cube whose edges each have a measure of 1. 5 cm is 3.375 cm³.

Volume of solid is the amount of quantity, which is obtained by the solid or object in the 3 dimensional space.

The more the volume of an object it obtains, the more space. Liter is the most common unit to measure the volume of a solid.\

The volume of the cube is given by,

\(V=a^3\)

Here, (a) is the side length of the cube.

The measures of each edges of the cube is 1. 5 cm. Thus, the volume of this cube can be given as,

\(V=(1.5)^3\\V=3.375\rm cm^3\)

Thus, the volume of the cube whose edges each have a measure of 1. 5 cm is 3.375 cm³.

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the p-value (0.208) is greater than the significance level (0.01), we fail to reject the null hypothesis

To determine if there is evidence to suggest that the proportion of voters who believe pharmaceutical companies invent diseases to make money is different for Democrats and Republicans, we can perform a hypothesis test. Let p1 be the proportion of Democrats who believe in the conspiracy theory, and p2 be the proportion of Republicans who believe in the conspiracy theory.

Let's set up the hypotheses:

Null hypothesis (H0): p1 - p2 = 0 (There is no difference in the proportions of Democrats and Republicans who believe in the conspiracy theory)

Alternative hypothesis (Ha): p1 - p2 ≠ 0 (There is a difference in the proportions of Democrats and Republicans who believe in the conspiracy theory)

We will use a two-sample proportion test to test these hypotheses. The test statistic for this test is given by:

\(\[ Z = \frac{\hat{p}_1 - \hat{p}_2}{\sqrt{\hat{p}(1-\hat{p})(\frac{1}{n_1}+\frac{1}{n_2})}} \]\)

where:

- \(\( \hat{p}_1 \)\) and \(\( \hat{p}_2 \)\) are the sample proportions of Democrats and Republicans who believe in the conspiracy theory, respectively.

- n₁ and n₂ are the sample sizes of Democrats and Republicans, respectively.

- \(\( \hat{p} \)\) is the overall proportion of belief in the conspiracy theory, calculated as the total number of believers divided by the total sample size.

The p-value is the probability of observing a test statistic as extreme or more extreme than the one calculated from the sample data, assuming the null hypothesis is true.

Given the sample data:

Democrats: n₁ = 788 and \(\( \hat{p}_1 = \frac{137}{788} \)\)

Republicans: n₂ = 866 and \(\( \hat{p}_2 = \frac{105}{866} \)\)

Let's calculate the test statistic and the p-value:

Step 1: Calculate \(\( \hat{p} \)\):

Total number of believers = 137 + 105 = 242

Total sample size = 788 + 866 = 1654

\(\( \hat{p} = \frac{242}{1654} \)\)

Step 2: Calculate the test statistic (Z):

\(\[ Z = \frac{\frac{137}{788} - \frac{105}{866}}{\sqrt{\frac{242}{1654} \cdot \left(1 - \frac{242}{1654}\right) \cdot \left(\frac{1}{788} + \frac{1}{866}\right)}} \]\)

≈ -1.258

Step 3: Calculate the p-value using the standard normal distribution table for a two-tailed test.

To calculate the p-value, we need to find the probability that a standard normal distribution is less than or greater than the absolute value of the test statistic. Since the alternative hypothesis is two-sided (p1 ≠ p2), we will calculate the p-value as twice the probability of the test statistic being greater than the absolute value of the calculated z-value.

Using a standard normal distribution table or a statistical software, we find that the p-value is approximately 0.208.

Conclusion:

Since the p-value (0.208) is greater than the significance level (0.01), we fail to reject the null hypothesis. There is insufficient evidence to suggest that the proportion of voters who believe pharmaceutical companies invent diseases to make money is different for Democrats and Republicans.

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Answer:

$286

Step-by-step explanation:

396/18 = $22 per hr x 13 hrs = $286

Plz give Brainliest

Answer:

Step-by-step explanation:

y + 1 = -3(x - 2)

y + 1 = -3x + 6

y = -3x + 5

Answer:

\({ \colorbox{lightgreen}{can \: be \: simplified}} \\ \dashrightarrow \: { \sf{ \blue{9x + 6x}}} \: \: \: \: \: \\ \hookrightarrow \: { \mathfrak{simplification}} \: \: \: \\ { \sf{ = (9 + 6)x}} \\ { \underline{ \sf{ \: = 15x \: \: \: \: \: \: \: \: \: \: }}} \\ \\ \dashrightarrow \: { \sf{ \blue{4x + x}}} \: \: \\ \hookrightarrow \: { \mathfrak{simplification}} \\ { \sf{ = (4 + 1)x}} \\ { \underline{ \sf{ \: = 5x \: \: \: \: \: \: \: \: \: \: \: \: }}} \\ \\\dashrightarrow \: { \sf{ \blue{y + 2y}}} \\ \hookrightarrow \: { \mathfrak{simplification}} \\ { \sf{ = (1 + 2)y}} \\ { \underline{ \sf{ \: = 3y \: \: \: \: \: \: \: \: \: \: \: \: }}}\)

\({ \colorbox{lightgreen}{cannot \: be \: simplified}} \\ \dashrightarrow \: { \sf{2x + 3y}} \\ \dashrightarrow \: { \sf{7y + 1 \: \: }} \\ \dashrightarrow \: { \sf{4y + 4x}}\)

Answer:

The base –2 is a negative number

Step-by-step explanation:

We need to solve the exponential expression (–2)³.

(–2)³ = -2×-2×-2

= -8

The final answer is -8. It is negative. It is because the base i.e. -2 is an even number. If the base is negative and the power is odd, the answer will be a negative number. Here, base is -2, power is 3. Hence, the correct option is (c) "The base –2 is a negative number".

Answer:

The exponent 3 is an odd number.

Step-by-step explanation:

Since the exponent (3) is an odd number, the answer will be negative. Answer: –8

Sidenote: I got this answer correct on the test :)))

Answer: pentagon

Step-by-step explanation:

Step-by-step explanation:

If each side is s and the regular polygon has n sides, then the perimeter P must be n * s.

Equation for perimeter of regular polygon = ns

Given that;

Number of sides of regular polygon = n

Length of each side = s unit

Find:

Equation for perimeter of regular polygon

Computation:

Perimeter of regular polygon = [Number of sides of regular polygon[[Length of each side]

Equation for perimeter of regular polygon = [n][s]

So,

P = ns

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Answer:

12x plus 9x

Step-by-step explanation:

Answer: D: x/2 = 45; x = 90

Step-by-step explanation:

half of a number is 45:

x/2 = 45

.: x = 90

Your answer is D

Answer:

D

Step-by-step explanation:

Answer:

the first one if you solve it it will be the same and the second one 41/7

Step-by-step explanation:

\(~~~~|2x +0.75| = 5 \dfrac 67\\\\\\\implies \left|2x+\dfrac 34\right| = \dfrac{41}7\\\\\\\implies 2x +\dfrac 34 = \dfrac{41}7~~~~ \text{or}~~~~ 2x + \dfrac 34 =- \dfrac{41}7\\\\\\\implies 2x = \dfrac{41}7- \dfrac 34~~~~ \text{or}~~~~ 2x = -\dfrac 34 - \dfrac{41}7\\\\\\\implies 2x = \dfrac{143}{28}~~~~~~~~ \text{or}~~~~ 2x = -\dfrac{185}{28}\\\\\\\implies x = \dfrac{143}{56}~~~~~~~~~ \text{or}~~~~~ x = -\dfrac{185}{56}\\\\\\\)

\(\implies x = 2\dfrac{31}{56}~~~~~~~~~ \text{or}~~~~~ x = -3\dfrac{17}{56}\\\)

The equation representing the total number of students in the class: b+g=36

The equation representing the total number of boys in the class: b=2g-3

Sentence representing solution: The number of boys in the class is 13 and the number of girls in the class is 26

Answer:

\( 1)-\sqrt{2.25} = - \sqrt{225 \times {10}^{ - 2} } \\ = -\sqrt{225} \times \sqrt{ {10}^{ - 2} } \\ =- 15 \times {10}^{ - 1} =- 1.5 = -\frac{3}{2} \\ 2) -\frac{3}{2} = -1.5 \\ thank \: you\)

The given equation "x - 5 = y^2 " does not define y as a function of x. This is because for each value of x, there are two possible values of y. Hence, the answer to this question is No.

For example, if x = 9, then y can be either 2 or -2. This violates the definition of a function, which states that for each input there should be exactly one output.  Therefore, it is determined that the equation "x - 5 = y^2" does not define y as a function of x because for each value of x, there exist two possible values of y.

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A square will always have 4-fold reflectional symmetry.

Square is a polygon with four equal sides and four right angles. It possesses 4-fold reflectional symmetry because it can be divided into four equal quadrants that are mirror images of each other. Each quadrant can be reflected along two perpendicular lines, resulting in four identical parts. The lines of reflection are the diagonals of the square, which bisect each other at right angles. This symmetry property makes the square an ideal choice for designs or patterns that require balanced and symmetrical elements.

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Answer:

a. what is the perimeter of a square with side length:

3 cm=12cm

7 cm=28

b.90