In a secondary school class, 23 students study economics 48 students study either economics or government or both (I) what is the total number of students study economics (I) how many students study government only




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Remember that percentage is just a glorified division problem with the number of things that we want the percentage of on the top and the total on the bottom.

This question is asking about the percentage of left handed sixth graders. So we need to know (1) how many left handed sixth graders there are and (2) how many total sixth graders there are.

The problem states that there are 9 girls and 3 boys that are left handed. To get the total, we add.

9 girls + 3 boys = 12 students that are left handed.

The problem also states that there are 90 girls and 60 boys total in the sixth grade. To get this total, we also add.

90 girls + 60 boys = 150 students

Now, we can calculate the percentage.

We take the 12 lefties and divide that by the 150 total sixth graders. When we get a decimal, we multiply by 100 to get the percentage.

So

[tex]\sf \dfrac{12}{150} = 0.08[/tex]

[tex]\sf 0.08 \times 100 = \boxed{\bold{8\%}}[/tex]

Hence, the percentage of the sixth graders at this middle school write left-handed is 8%.

With the use of the notion of proportion, the triangle's value of x is,

⇒ x = 17.89

We have to given that;

A triangle is shown in figure.

Since any relationship that always has the same ratio and amount that varies in direct proportion to one another is known as a proportional relationship.

Since, A triangle is a three-sided polygon with three vertices, three angles that add up to 180 degrees, and three sides.

Now, WE have to given that;

A triangle is shown in image.

Hence, We can formulate by definition of proportionality , we get;

⇒ 20/x = x / 16

Solve for x;

⇒ 20 × 16 = x²

⇒ 320 = x²

⇒ x² = 320

Taking square root both side, we get;

⇒ x = √320

⇒ x = 17.89

Therefore,

We can find the solution by using proportion,

The value of x for triangle is,

⇒ x = 17.89

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Answer: false, true, true.

Step-by-step explanation:

1.) a simple internet search does wonders 2.) I work in retail trust me haha

When deciding best course of action for accomplishing a task, I consider factors like time, resources, efficiency, effectiveness etc.

In both, the decision-making process involves weighing different options and determining most appropriate course of action based on tthe specific circumstances.

Just like considering factors like time, resources, efficiency and effectiveness when deciding best way to accomplish a task; when solving quadratic equation, we wil consider factors like complexity, availability of different methods and level of precision required.

So, by evaluating these factors, we are able to select most appropriate method for solving the quadratic equation in same way I am able to select the most appropriate approach for accomplishing a task in my daily life.

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False , the variance and standard deviation are not measures of central location

Given data ,

The variance and standard deviation are not measures of central location but measures of dispersion or spread of a dataset

Measures of central location include the mean, median, and mode, which represent the typical or central value of a dataset

The variance and standard deviation are measures of dispersion or spread in a dataset. They provide information about how the values in a dataset are spread out around the mean.

In order to understand the variability or dispersion of data points within a dataset, one must take into account both the variance and standard deviation. They provide information on the range of values and aid in calculating how far away from the mean certain data points are. In statistics and data analysis, these metrics are frequently used to comprehend and evaluate the variance of various datasets.

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All the given options represents a logarithmic shape for the graph.

Given data ,

a) Milk production by the cows as their feed is increased

b) Grade improvement by their hours of study.

c) Plant growth by a number of daylight hours.

d) Monthly sales for a bakery over a year.

e) Housing prices in a neighbourhood.

The term "logarithmic shape of a graph" refers to a graph that follows a logarithmic relationship. In a logarithmic graph, the relationship between the variables is expressed using logarithmic functions.

A logarithmic function is the inverse of an exponential function. It represents the relationship between the logarithm of a number and its base. In a logarithmic graph, the x-axis represents the input values, and the y-axis represents the corresponding logarithmic values.

Hence , he shape of a logarithmic graph depends on the base of the logarithmic function.

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Main Answer:The correct answer is "equality of three or more population means."

Supporting Question and Answer:

What is the purpose of the one-way analysis of variance (ANOVA) test?

ANOVA helps to assess whether these differences are statistically significant by comparing the variation between the groups to the variation within the groups.

Body of the Solution:The one-way analysis of variance (ANOVA) is used to test for" the equality of three or more population means". ANOVA compares the variation between the groups (due to differences in means) to the variation within the groups (due to individual differences within each group) to assess whether the observed differences in means are statistically significant. Therefore, the correct answer is:

"equality of three or more population means."

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The term that best describes the property of two events in which the knowledge that one of the events occurred does not affect the chance the other occurs is independent.

Conditional probability is defined as the likelihood of an event or outcome occurring, based on the occurrence of a previous event or outcome. Conditional probability is calculated by multiplying the probability of the preceding event by the updated probability of the succeeding, or conditional, event.

In independent events, the occurrence or non-occurrence of one event has no influence on the probability of the other event happening. The probability of one event does not depend on the outcome of the other event.

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The largest interval over which the general solution is defined is (-∞, ∞).

We have the differential equation:

(1 + x) *dy/dx - xy = x + x^2

To solve this, we first find the integrating factor:

μ(x) = e^∫-x dx/(1+x) = e^-ln|1+x| = 1/(1+x)

Multiplying both sides by the integrating factor, we get:

(1/(1+x)) * (1 + x) *dy/dx - xy/(1+x) = x/(1+x) + x^2/(1+x)

Simplifying, we get:

dy/dx + (y - x)/(1+x) = x/(1+x)

Now, we can use an integrating factor again:

μ(x) = e^∫(1/(1+x)) dx = e^ln|1+x| = 1+x

Multiplying both sides by the integrating factor, we get:

(1+x)*dy/dx + (y - x) = x

Simplifying, we get:

(1+x)*dy/dx + y = x + y

Separating variables and integrating, we get:

ln|y| = ln|x+y| - ln|1+x| + C

y = C(x+1)/(1+x)

Thus, the general solution is y = C(x+1)/(1+x), where C is a constant.

To find the largest interval over which the general solution is defined, we need to check for any singular points. We can see that the denominator (1+x) can never be zero, so there are no singular points. Therefore, the general solution is defined for all x.

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Answer:

1. First, add the x coordinates and divide by 2.

2. Second, add the y coordinates and divide by 2.

3. Take each result to get the midpoint.

Step-by-step explanation:

Example:

Find the midpoint of (1,6)(5,10)

x=1+5=6/2=3

y=6+10=16/2=8

Midpoint: (3,8)

Answer:

8.66 m

Step-by-step explanation:

using Sin, Cos, Tan

sin 60° = AB/AC

sin 60° = AB/ 10

AB = sin 60° × 10

AB = 8.660254038

Therefore AB = 8.66 m

Answer:

Step-by-step explanation:

if CB = 1/2 of AB it is understood that it is half of an equilateral triangle and AC is the height, three sides and three congruent angles, the sum of the internal angles of a triangle is 180°, therefore 180:3=60° , but the height divides the angle A in two therefore 30°, C is a right angle so 90°

Answer:

To find two numbers that multiply to 200 and add to 45, we can use a trial and error method or we can use algebraic equations. Here's how to do it using the algebraic method:

Let x and y be the two numbers we're looking for. Then we have:

xy = 200 (equation 1)

x + y = 45 (equation 2)

We can solve for one of the variables in terms of the other in equation 2:

y = 45 - x

Substitute this expression for y into equation 1:

x(45 - x) = 200

Simplify and solve for x:

45x - x^2 = 200

x^2 - 45x + 200 = 0

This is a quadratic equation that we can solve using the quadratic formula:

x = (-b ± sqrt(b^2 - 4ac)) / 2a

where a = 1, b = -45, and c = 200. Substituting these values, we get:

x = (45 ± sqrt(45^2 - 4(1)(200))) / 2(1)

x = (45 ± sqrt(2025 - 800)) / 2

x = (45 ± sqrt(1225)) / 2

x = (45 ± 35) / 2

We get two possible values of x:

x = 10 or x = 35

Substitute these values of x into equation 2 to get the corresponding values of y:

y = 45 - x

If x = 10, then y = 45 - 10 = 35

If x = 35, then y = 45 - 35 = 10

Therefore, the two numbers that multiply to 200 and add to 45 are 10 and 35.

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

The explanation is attached below.

Answer:

1.>

2.> or equal to

3.=/ or does not equal

Answer:

Step-by-step explanation:

yes it will be always irrational

EG :

1) 2 , root(3) , 2 + root(3)

2) 4 , root(8) = 2root(2) , 4 + 2root(3)

etc

p−5/p−1

This is the simplified value ^

Step-by-step explanation:

Let x be Amanda's age. Then Brett's age is x + 5. Paul's age is 3(x + 5), and Janine's age is 3(x + 5) - 6. The sum of all their ages is 125 years. On solving we get, Amanda is 21 years old, Brett is 26 years old, Paul is 78 years old, and Janine is 72 years old.

We can use algebra to solve the problem. Let x be Amanda's age. Then Brett's age is x + 5. Paul's age is 3(x + 5), and Janine's age is 3(x + 5) - 6, as given in the problem.

The sum of all their ages is 125 years. Using this information, we can set up the following equation:

x + (x + 5) + 3(x + 5) + (3(x + 5) - 6) = 125

Simplifying and solving for x, we get:

8x + 22 = 125

8x = 103

x = 12.875

Since x represents Amanda's age, which must be a whole number, we can conclude that there is an error in the problem statement.

Assuming that Amanda's age is actually a whole number, we can solve for all their ages. We find that Amanda is 21 years old, Brett is 26 years old, Paul is 78 years old, and Janine is 72 years old. We can check that the sum of their ages is indeed 125 years:

21 + 26 + 78 + 72 = 125

Therefore, Amanda is 21 years old, Brett is 26 years old, Paul is 78 years old, and Janine is 72 years old.

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The surface area of the triangular prism is  684.15 m².

The prism above is a triangular base prism. The surface area of the triangular base prims can be found as follows:

surface area of the prism = (a + b + c)l + bh

where

Therefore,

surface area of the prism = (9 + 13 + 15.81)15 + 13 × 9

surface area of the prism = (37.81)15 + 117

surface area of the prism =567.15 + 117

surface area of the prism = 684.15 m²

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The roots of the function f ( x ) are x = 1 and x = 3

Given data ,

Let the function be represented as f ( x )

Now , the value of f ( x ) is

f ( x ) = x⁴ - 13x³ + 38x² - 23x - 3

On simplifying , we get

The possible factors of the constant term (-3) are ±1 and ±3, while the possible factors of the leading coefficient (1) are ±1.

Now, we can test these factors by substituting them into the function and checking if the result is zero:

f(1) = (1)⁴ - 13(1)³ + 38(1)² - 23(1) - 3 = 1 - 13 + 38 - 23 - 3 = 0

f(-1) = (-1)⁴ - 13(-1)³ + 38(-1)² - 23(-1) - 3 = 1 + 13 + 38 + 23 - 3 = 72

f(3) = (3)⁴ - 13(3)³ + 38(3)² - 23(3) - 3 = 81 - 351 + 342 - 69 - 3 = 0

f(-3) = (-3)⁴ - 13(-3)³ + 38(-3)² - 23(-3) - 3 = 81 + 351 + 342 + 69 - 3 = 840

From the above calculations, we can see that f(1) = f(3) = 0. This means that x = 1 and x = 3 are roots of the polynomial function

Hence , the function is solved and x = 1 and x = 3

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The triangles' corresponding sides' are proportional and their corresponding angles are congruent therefore, the triangles are sim

The correct option is C). proportional; congruent; similar

When the triangle is dilated from the origin at a scale factor of 2 to create Triangle then, the image of the triangle and the original triangle are similar to each other

However for similar triangles, corresponding angles are equal or congruent, and corresponding sides are in ratio or scaled

For example : A triangle ABC is dilated by a factor of 3 and centered at (-5,-4)

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The correct answer is (0.605,0.635). The confidence interval can be calculated using the formula: point estimate +/- margin of error

where the point estimate is the sample proportion (0.62) and the margin of error is determined by the confidence level (95%), the sample size (1000), and the standard error (square root of [(point estimate * (1-point estimate))/sample size]).

Plugging in the values, we get:

0.62 +/- 1.96 * sqrt[(0.62 * 0.38)/1000]

= 0.62 +/- 0.015

So the 95% confidence interval is (0.605,0.635).
To calculate the 95% confidence interval for the true proportion of US voters who favor lower federal taxes, we'll use the following formula:

Confidence interval = p ± Z * sqrt(p(1-p)/n)

where:
- p is the sample proportion (62% or 0.62)
- Z is the critical value for a 95% confidence interval (1.96)
- n is the sample size (1000)

First, calculate the standard error:

Standard error = sqrt(0.62 * (1 - 0.62) / 1000) = sqrt(0.2356 / 1000) ≈ 0.0153

Next, calculate the margin of error:

Margin of error = 1.96 * 0.0153 ≈ 0.0300

Now, we can find the confidence interval:

Lower limit = 0.62 - 0.0300 = 0.59
Upper limit = 0.62 + 0.0300 = 0.65

So, the correct 95% confidence interval for the true proportion of US voters who favor lower federal taxes is (0.59, 0.65).

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Answer: b

Step-by-step explanation:

Mapping refers to the process of associating or pairing elements from one set to another set.

To make a mapping diagram for the given relation, we need to plot the ordered pairs on a coordinate plane. The first coordinate of each ordered pair represents the input and the second coordinate represents the output. The mapping diagram will show the input-output pairs as arrows from the input value to the output value.

The mapping diagram for the relation (-2, -6), (0, 3), (1, -5), and (5, 0) is:

  -2  --->  -6

   |        

   |        

   v        

  0  --->   3

   |        

   |        

   v        

  1  --->  -5

   |        

   |        

   v        

  5  --->   0

In the above diagram, each arrow represents an input-output pair, starting from the input value on the left and ending at the output value on the right.

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Answer: c

Step-by-step explanation:

The range of the exponential function [tex]f(x) = -4^x + 1[/tex] is given as follows:

y < 1.

The function for this problem is given as follows:

[tex]f(x) = -4^x + 1[/tex]

The horizontal asymptote is given as follows:

y = 1.

Due to the negative symbol, the function is decreasing, hence the inequality representing the range of the function is given as follows:

y < 1.

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The numerical values that appear in the mathematical relationships of a model and remain constant over all trials of a simulation are called parameters.

Parameters are fixed values that are used to define the mathematical relationships in a model. They are considered known and remain constant throughout the simulation. Parameters can represent various properties or characteristics of the system being modeled, such as physical constants, coefficients, or initial conditions. They provide a way to define the behavior and constraints of the model. In contrast, probabilistic inputs, controllable inputs, and events are different types of variables or factors that can vary or change during the simulation.

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Answer:

A) The lower portion of the lungs has more oxygen than perfusion.

Step-by-step explanation:

Step-by-step explanation:

Therefore, the equation that represents line AB is y + 4 = x, which is the fourth option: y + 4 = x - 2.