please help with this, i don’t understand it.

Answer:

5/2; 5

Step-by-step explanation:

The first box is m, which is the slope. To find the slope you do rise over run, so basically the change in x and y. You move up 5 and over 2, so m would be 5/2.

The second box is b, which is the y-intercept. To find the y-intercept, you just find where the line crosses the y-axis. That would be 5

Answer: The discount is $13.75, which is found by multiplying the original price by the discount percentage, 0.25.

Step-by-step explanation:

The sampling technique used to obtain the described sample is A. Systematic sampling.

In systematic sampling, the elements of the population are ordered in some way, and then a starting point is randomly selected. From that point, every nth element is selected to be part of the sample.

In the given scenario, the first 35 students leaving the library were selected. This suggests that the students were ordered in some manner, and a systematic approach was used to select every nth student. Therefore, the sampling technique used is systematic sampling.

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Answer:

Step-by-step explanation:

The question is

There is 11.73 kg of chocolate candies in the grocery store. The first customer bought 48 dag of candies. A second customer bought 4/5 of the remaining quantity. The last three customers bought the same amount of candy. How much chocolate did the last customers get?

Givens

Let's transform 48 dag to kilograms.

\(48dag \times \frac{1kg}{100dag}= 0.48 \ kg\)

Therefore, the first costumer bought 0.48 kilograms of candies.

The remaining amount is: \(11.73kg-0.48kg=11.25kg\)

Now, we need to multiply the remaining amount of candies with 4/5

\(\frac{4}{5} \times 11.25kg=9 \ kg\)

Therefore, the second costumer bought 9 kilograms of chocolate candies.

At last, we need to find the new remaining part of candies, which is

\(11.25-9=2.25 \ kg\)

Therefore, the last costumers got 2.25 kilograms of chocolate candies.

Answer: 50

Step-by-step explanation:

Let the number of pizza made last week be represented by y.

From the question, we can form it into:

24% of y = 12

24/100 × y = 12

0.24 × y = 12

0.24y = 12

y = 12/0.24

y = 50

50 pizza were made last week.

Answer: y+7=0 x(x-8)

Step-by-step explanation:

.

Answer:

1/2

Step-by-step explanation:

1/3 + 1/6

LCM of 3 and 6 is 6.

therefore, multiple the fraction that doesn't have 6 as denominator with a fraction that makes the denominator equal to the LCM.

1/3 × 2/2 = 2/6

(we have used 2/2 because 3×2= 6)

so,

2/6+1/6 = 2+1/6

(2 + 1 whole divided by 6)

therefore we get,

3/6

on simplification,

3/6 = 1/2 = 0.5

hope it helps!!

PLEASE MARK BRAINLIEST..

Answer:

1/3 + 1/6 = 2/6 + 1/6 = 1/2 (simplified from 3/6)

Step-by-step explanation:

since 1/3 = 2/6 (to get the same denominator)

2/6 + 1/6 = 3/6 (or 1/2 simplified, when divided by 3/3)

so 2/6 + 1/6 = 3/6

2 is the first blank

1/2 is your answer. (second blank)

hope this helps:)

To test whether a data model is biased, one can compute the average difference between a predicted result and an actual result using the bias() function.

Unreasonably supporting or opposing someone or something because you allowed your opinions to cloud your judgement: The senator accused the media of being biased. Journalists need to be objective and free of political prejudice. Cognitive biases are systematic thinking errors that are often learned from cultural and personal experiences.

They lead to perceptional distortions when people make decisions. Even though data may appear to be objective, it can still be biased because it is gathered and handled by humans. We are not objective in the way we perceive things. Biases can be deliberate or unintentional. If given the choice between three shirts, a person might choose the one in their preferred hue above the other two.

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Correct Question:

A data analyst wants to find out how much the predicted outcome and the actual outcome of their data model differ. what function can they use to quickly measure this?

Answer:

The equation of the parabola will be:

Step-by-step explanation:

The vertex  (h, k)  is halfway between the directrix and focus.

Find the  x  coordinate of the vertex using the formula

x = (x-coordinate of focus + directrix)/2

 = (3-3)/2

 = 0/2

 =0

The  y -coordinate will be the same as the y-coordinate of the focus.

so the vertex will be: (0, 0)

Finding the distance from the focus to the vertex

The distance from the focus to the vertex and from the vertex to the directrix is |p|.

Subtract the  x  coordinate of the vertex from the x -coordinate of the focus to find  p .

\(p=3-0\)

\(p=3\)

Substitute in the known values for the variables into the equation

\(\left(y-k\right)^2=4p\left(x-h\right)\)

\(\left(y-0\right)^2=4\left(3\right)\left(x-0\right)\)

\(\:y^2=12x\)

Therefore, the equation of the parabola will be:

The researchers used a sample of mice in a maze experiment to study learned behavior. They timed each mouse on its first run through the maze and again on its tenth run through the maze, recording the difference in times for each mouse.

The maze experiment is a common method used by researchers to study the learned behavior of animals, including mice. In this experiment, a maze is set up with food placed at the end to motivate the mouse to find its way through the maze. The researchers time the mouse on its first run through the maze to establish a baseline for the mouse's performance. They then repeat the experiment by timing the mouse on its tenth run through the maze to see if the mouse has learned and improved its performance. By subtracting the time of the first run from the time of the tenth run, the researchers can measure the difference in time and assess how much the mouse has learned.

The difference in time between the first and tenth run can be used as a measure of learning, and statistical analysis can be applied to identify significant changes in the mouse's performance. This type of experiment can be useful for studying the effects of different variables on learning, such as different training methods or drug treatments. The maze experiment can also be adapted to study other aspects of animal behavior, such as memory and decision-making.

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A data analyst who wants to create a visualization that demonstrates how often data values fall into certain ranges should use option A: histogram.

The distribution of a continuous variable is depicted by a histogram, a form of bar graph, by splitting the data into intervals, or bins, and charting the number of observations that fall within each bin. The range of values being measured are shown on the x-axis as intervals or bins, and the frequency or count of observations inside each bin is shown on the y-axis.

When presenting a distribution's shape, such as whether it is symmetrical or skewed, and when locating outliers or data gaps, histograms are especially helpful. They are frequently used to analyze and show data in disciplines including statistics, data science, and quality control.

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Correct question:

a data analyst wants to create a visualization that demonstrates how often data values fall into certain ranges. what type of data visualization should they use?

histogram

line graph

correlation charts

catter plot

Answer:

5x-3= x=5-3= 2=2x

then, 6×2x =12x

Answer:

a) 0.6

b) 0.73

c) 7/8

Step-by-step explanation:

a) 0.6 repeating

b) 0.73

c) 7/8  (0.875)

Answer:

No, it is NOT a function.

Step-by-step explanation:

A functions' inputs are assigned to exactly one output.

We are given the points:

{(8,2) (4,-3) (6,4) (8,1)}

The input of 8 is repeating.

The given relation is not a function.  

Hope this helps!

Answer:

B. 9.3 x 10^7

Step-by-step explanation:

9.<3<0<0<0<0<0<0.

Move the decimal point until there is only one whole number left.

Answer:

The awnser is 4.472135955

Answer:

lower limit = 5

upper limit = 10

class mark = lower limit + upper limit ÷ 2 = 7.5

class size = upper limit - lower limit

= 10-5 = 5

Step-by-step explanation:

I hope this help you have an great day and safe health

Answer:

11.50

Step-by-step explanation:

Just add it up on a calculator and that's for the terms. t = 11.50

The rule of obtuse angle is that one angle measures more than 90° and total sum og angle should be 180°.

Acute, obtuse, right, straight, reflex, and complete rotation are some of the terms used to describe fundamental angles. Two rays are joined at their termini to form the geometric shape known as an angle. The most common way to express an angle is in degrees.

A measure of an angle or the amount of turning required to bring one line or plane into coincidence with or parallel to another angled is represented by two lines extending from the same point.

A triangle is said to have an obtuse angle if one of the inner angles is greater than 90 degrees. If one of the angles of an obtuse triangle is greater than 90°, then the total of the other two angles is also less than 90°.

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Answer:

Step-by-step explanation:

The product of a negative two and a positive three is equal to negative six (-6).

Answer:

x = 4 ; a = 15 ; b= -2

Step-by-step explanation:

The solutions of the equation 2sinθ - 1 = 0 in the interval (0, 2π) are θ = π/6 and θ = 13π/6.

To find all solutions of the equation 2sinθ - 1 = 0 in the interval (0, 2π), we can solve for θ by isolating the sine term and then using inverse sine (arcsin) to find the angles.

Start with the equation: 2sinθ - 1 = 0.

Add 1 to both sides of the equation: 2sinθ = 1.

Divide both sides by 2: sinθ = 1/2.

Take the inverse sine (arcsin) of both sides: θ = arcsin(1/2).

The inverse sine (arcsin) of 1/2 is π/6, so we have one solution θ = π/6.

However, we need to find all solutions in the interval (0, 2π). Since the sine function has a periodicity of 2π, we can add 2π to the solution to find additional solutions.

Adding 2π to π/6, we get θ = π/6 + 2π = π/6, 13π/6.

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Answer:

7a

Step-by-step explanation:

You would just add the two numbers and put the a in front of the answer. It would be 2 + 5 (which is 7) then put the a after the 7.

Answer:

The new version contains 15 lemons, 6 cups of water and 6 tablespoons of honey

Step-by-step explanation:

The given ingredients used to make the lemonade are;

The number of lemons = 5

The number of cups of water = 2

The number of tablespoons of honey = 2

Therefore a new version the lemonade recipe that would make more lemonade but that would still taste the same as the lemonade made with the given recipe is found by scaling up the quantities of the ingredients in the given recipe as follows;

The  ingredients used to make the new lemonade are obtained by multiplying the ingredients in the given recipe by a factor larger than 1;

The number of lemons in the new recipe = 5 × 3 = 15

The number of cups of water in the new recipe = 2 × 3 = 6

The number of tablespoons of honey  in the new recipe = 2 × 3 = 6

The new version contains 15 lemons, 6 cups of water and 6 tablespoons of honey.

1. The population does not need to be normally distributed for the sampling distribution of x bar to be approximately normally distributed because the Central Limit Theorem states that regardless of the shape of the underlying population, the sampling distribution of ¯x becomes approximately normal as the sample size, n, increases. Therefore, the correct option is A.

2. The sampling distribution of ¯x is normal or approximately normal with μx = 68 and σx = 0.464. Therefore, the correct option is A.

1. The answer to 'does the population need to be normally distributed for the sampling distribution of x bar to be approximately normally distributed?' is no  because the Central Limit Theorem states that regardless of the shape of the underlying population, the sampling distribution of ¯x becomes approximately normal as the sample size, n, increases. In this case, the sample size is 41, which is large enough for the Central Limit Theorem to apply.

2. The sampling distribution of ¯x is normal or approximately normal with μx = 68 and σx = 0.464. The standard error (SE) of the sampling distribution of the sample mean is σ/√n. Here, the mean of the population is 68 and the standard deviation is 3.

The formula for the sampling distribution of the mean can be used to find the standard error. SE= σ/√n = 3/√41 = 0.464. The sampling distribution of ¯x is normally distributed, and since the sample size is 41, the sample mean can be considered approximately normally distributed.

Thus, the sample mean follows the normal distribution with μ = 68 and σx = 0.464. Therefore, the answer is: The sampling distribution of ¯x is normal or approximately normal with μx = 68 and σx = 0.464.

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Step 1: The average price is $4.17.

Step 2: To calculate the average price, we need to find the sum of all the prices and divide it by the total number of items. In this case, the student purchased groceries at the prices of $1.01, $3.46, $5.84, and $7.38.

Summing up these prices, we get $1.01 + $3.46 + $5.84 + $7.38 = $17.69.

Since there are four prices, we divide the sum by 4 to find the average price: $17.69 / 4 = $4.4225.

Rounding this to the nearest cent, the average price is $4.42.

Step 3: The average price of the groceries purchased by the student is $4.17. This is calculated by summing up the individual prices and dividing the sum by the total number of items. The average price is commonly used as a measure to understand the typical or representative value of a set of prices.

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the answer is in the picture

(a) Expanding E = γmc^2 using binomial expansion: E ≈ mc^2 + (1/2)mv^2 + (3/8)(mv^4/c^2) (truncated to three terms).

(b) The terms in the expansion represent the rest mass energy (mc^2) and kinetic energy [(1/2)mv^2] contributions to the total energy of the particle.

(a) To expand the function E = γmc^2 as a power series with respect to the speed v to the first three non-zero terms, we can use the binomial expansion. The expansion of (1 - v^2/c^2)^(-1/2) to the first three terms is:

E = γmc^2 = mc^2(1 - v^2/c^2)^(-1/2)

Expanding the term (1 - v^2/c^2)^(-1/2) using the binomial expansion, we have:

E = mc^2(1 + (1/2)(v^2/c^2) + (3/8)(v^4/c^4) + ...)

Truncating the expansion to the first three non-zero terms, we get:

E ≈ mc^2 + (1/2)mv^2 + (3/8)(mv^4/c^2)

(b) The first term, mc^2, represents the rest mass energy of the particle. It is the energy associated with the particle at rest, independent of its motion. This term is a fundamental concept in relativity, indicating that mass itself has an inherent energy.

The second term, (1/2)mv^2, corresponds to the kinetic energy of the particle. It represents the additional energy gained by the particle due to its motion. As the particle's speed increases, this term increases, contributing to the total energy of the particle.

Physically, the second term in the series, (1/2)mv^2, reflects the classical kinetic energy associated with the particle's motion. It shows that as the speed of the particle increases, its kinetic energy and, consequently, its total energy also increase. This term becomes significant for high-speed particles where relativistic effects become important.

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