you enter to a comic store and you want to select a comic among action comics, superman, captain marvel, archie,x-man and nancy comics. how many ways are there to select 10 comics?

The first case given is a deigned experiment and the second case is an observational study.

i. This is a designed experiment because the tunas were randomly assigned to two different treatments (polluted and non-polluted water) in an attempt to determine the effect of the treatment (methyl mercury) on the outcome (survival times). The experiment was intentionally designed and carried out to test a hypothesis.

ii. This is an observational study because the data was collected by simply observing the natural occurring relationship between increasing amounts of phosphorus in the lake and decreasing number of lake trout over time, without any manipulation or intervention by the biologist. The purpose is to describe or understand the relationship between two variables rather than to test a hypothesis.

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To solve logarithmic equations with multiple bases, transform them to logarithms with a single basis and then isolate the variable using logarithmic characteristics.

An equation is a formula in mathematics that expresses the equivalence of two expressions by linking them with the equals symbol =. In its most basic form, an equation is a mathematical statement that indicates that two mathematical expressions are equal. 3x + 5 = 14, for example, is an equation in which 3x + 5 and 14 are two expressions separated by a 'equal' sign. An equation is made up of multiple components, including words, coefficients, exponents, arithmetic operators, equal signs, and constants.

Here,

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Answer:4.62x10^13

Step-by-step explanation:

Answer:

see below

Step-by-step explanation:

15:25 divide each side by 5 & get 3:5

3+5 =8 so basically it's like 8 slices of pizza, girls get 3 slices, boys get 5,  

now we split the money.  640/8=80, so

girls get 3 x80 = 240

boys get 5x80 = 400

The correct answer is B) the graph of g is a 1/3 horizontal shrink of the graph of f.

A mathematical transformation is the movement of a geometric object or function from one space to another. This new space may be a new quadrant in a Cartesian coordinate system, or it could be a whole new plane or number set. When we translate, we move a figure in any direction. When we flip a figure over a line, we call this reflection. When we rotate a figure a given amount around a point, we call this rotation. Transformations are classified into four types: translation, rotation, reflection, and dilation. Rotation, translation, and reflection are examples of stiff transformations.

Here,

The function g(x) = f(3x) is defined as the transformation of f(x) by replacing x with 3x in the argument of f. This means that each x-value of f(x) is replaced with 3 times its original value in g(x). As a result, the graph of g(x) will be a horizontal shrink of the graph of f(x) by a factor of 1/3. The horizontal axis will be compressed, making the graph appear narrower than the graph of f(x).

The correct answer is B) the graph of g is a horizontal shrink of the graph of f by a factor of 1/3.

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6.08 ounces of Ceylon tea and 1.92 ounces of Formosa tea must be mixed to produce a mixture of 8 oz worth $1.62/oz.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

Example:

2x + 3 = 7 is an equation.

We have,

Ceylon tea = x

Cost = $1.50

Formosa tea = y

Cost = $2

Now,

To produce a mixture of 8 oz worth $1.62/oz.

We can make two equations:

x + y = 8 _____(1)

1.50x + 2y = 12.96 ______(2)

From (1),

x = 8 - y

Substituting in (2).

1.50x + 2y = 12.96

1.50 (8 - y) + 2y = 12.96

12 - 1.50y + 2y = 12.96

0.50y = 12.96 - 12

y = 0.96/0.50

y = 1.92

And,

x = 8 - 1.92

x = 6.08

Thus,

6.08 ounces of Ceylon tea.

1.92 ounces of Formosa tea.

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The inverse of the linear equation is:

y = x - 3

And its graph can be seen on the image at the end.

The dashed line is the parent linaer equation:

y = x

And it is its own inverse, so we ignore that one.

The other line is:

f(x) = x + 3

Now, remember that the inverse of f(x) will be a function g(x) such that:

f( g(x)) = x

         = g(x) + 3 = x

Solving that for g(x) we will get:

g(x) =x - 3

The graph of that lineis on the image at the end.

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The equation of the line in slope-intercept form is y = 1/4x + 4, with slope 1/4, and passes through the point (-4,3).

The slope of a line is defined as the gradient of the line. It is denoted by m

Slope m = (y₂ - y₁)/(x₂ -x₁ )

The slope-intercept form of a line is y = mx + b, where m is the slope and b is the y-intercept.

Given the slope, m = 1/4, and the point (-4,3), we can use the point-slope form of a line to find the y-intercept:

y - 3 = 1/4 × (x - (-4))

y - 3 = 1/4x + 1

We can simplify this equation:

y = 1/4x + 4

This is the equation of the line in slope-intercept form.

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Yes, the data provided can be used to provide convincing evidence that the true proportion of teens who think highly of their mother is greater than 0.84.

To determine if the data provides convincing evidence that the true proportion of teens who think highly of their mother is greater than 0.84, we need to perform a hypothesis test. Here is the basic process:

State the null and alternative hypotheses:

Null Hypothesis: The true proportion of teens who think highly of their mother is equal to 0.84 (p = 0.84)

Alternative Hypothesis: The true proportion of teens who think highly of their mother is greater than 0.84 (p > 0.84)

Select the level of significance: A commonly used level of significance is 0.05, meaning that we are willing to accept a 5% chance of making a type I error (rejecting the null hypothesis when it is true).

Compute the test statistic and p-value: The test statistic is the z-score and can be calculated using the formula:

z = (x - p) / sqrt(p(1-p) / n)

where x = number of positive responses in the sample = 135

p = proportion claimed in the statement = 0.84

n = sample size = 150

Make a decision: Compare the calculated p-value with the level of significance. If the p-value is less than the level of significance (0.05), reject the null hypothesis. If the p-value is greater than the level of significance, fail to reject the null hypothesis.

Draw a conclusion: If the null hypothesis is rejected, conclude that the data provides convincing evidence that the true proportion of teens who think highly of their mother is greater than 0.84. If the null hypothesis is not rejected, conclude that the data does not provide convincing evidence that the true proportion is greater than 0.84.

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The probability of choosing a three digit number whose sum is 3 is given by the equation P = 0.00666

The probability that an event will occur is measured by the ratio of favorable examples to the total number of situations possible

Probability = number of desirable outcomes / total number of possible outcomes

The value of probability lies between 0 and 1

Given data ,

Let the number of three digits number be represented as n

Let the probability of choosing a three digit number whose sum is 3 be P

Now , the number of three digits number whose sum is 3 is given by set A

Set A = { 102 , 120 , 111 , 201 , 210 , 300 }

Now , the total number of 3 digits numbers is n = 900

So , the probability of choosing a three digit number whose sum is 3 P = number of three digits number whose sum is 3 / total number of 3 digits numbers

The probability P = 6/900

On simplifying the equation , we get

The probability P = 1/150

The probability P = 0.00666

Hence , the probability is P = 0.00666

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The population of Pakistan is calculated as; 1.82 × 10⁸

The parameters for the population are;

Japan Population; J = 1.30 × 10⁸

Brazil Population; B = 1.95 × 10⁸

Now, the ratio of J:B = x : x + 5

Thus;

(1.30 × 10⁸)/(1.95) × 10⁸ = x/(x + 5)

Solving this gives x = 10

Now, we are told that;

J:P = x : x + 4

Where P is pakistan population

Thus;

(1.30 × 10⁸)/P = 10/(10 + 4)

(1.30 × 10⁸)/P = 10/14

P = 14(1.30 × 10⁸)/10

P = 1.82 × 10⁸

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As variability shows the degree to which a particular score (or set of scores) accurately captures the distribution as a whole, it plays a significant role in sampling.

The sampling variability is the degree to which estimates vary among samples. The range is another word for "variability," and it describes how different samples have different ranges of results.

A sampling error is a phrase that's similar to, almost a synonym for, an error. An error in sampling is a measurement of how far a value deviates from its "true" value rather than an error itself. The various inaccuracies are a reflection of the sampling variability or variation between your samples.

The variability of samples fluctuates as sample sizes are raised or lowered. The sample size that will provide you with reliable estimates of the sample mean, variance, and other statistics is not the "ideal" sample size. Instead, you use your best estimation, which is based on accepted statistical practices.

Estimates will typically vary from sample to sample and are unlikely to ever completely match the population parameter.

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Answer:

Step-by-step explanation:

It seems we are looking for a math expression that is the same as English expression you wrote.The sum is what we get when we add numbers. Therefore, we could restate the English expression as what do we get when we add 5 to the number x? While we do not know what specific number x represents, we do know that if we add 5 to the number x we get 5 plus x. Now the question can be restated as, "How do we write 5 plus the number x?" Do you know the answer now? Does 5 + x sound right? How about x + 5? Both of these expressions are correct as they both represent the sum of 5 and the number x.

The  values of x is (4,-8) he two vectors will be orthogonal.

Let u=(x+4) i-4 j

x=x i+8 j

Now, U and v are orthogonal.

A number of vectors that are mutually perpendicular to each other, meaning they form an angle of 90° with a magnitude of one unit with each other, are called orthogonal unit vectors.

Therefore, u.v=0

⇒[tex]((x+4) i-4 j) \cdot(x i+8 j)=0 \\[/tex]

⇒[tex]x(x+4)-32=0 \\[/tex]

⇒[tex]x^2+4 x-32=0 \\[/tex]

⇒[tex]x^2+8 x-4 x-32=0 \\[/tex]

⇒[tex]x(x+8)-4(x+8)=0 \\[/tex]

⇒x=4, x=-8

Therefore, the value of x=4 and x=-8 the two vectors will be orthogonal.

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The height of the tree is 5.4 meters.

Multiplication is a mathematical arithmetic operation. It is also a process of adding the same types of expression for some number of times.

Example - 2 × 3 means 2 is added three times, or 3 is added 2 times.

Given:

The picture shows a man next to a tree.

The man has a height of 1.8 meters.

The man and the tree are drawn to the same scale.

The height of the tree = 1.8 x 3 = 5.4 meters

Therefore, the height is 5.4 meters.

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Answer:7.2

Step-by-step explanation: as the man is 1.8 you can see that if you add on top of him 4 more in total that would be the height of the tree so the calculation would be 1.8x4 which would be 7.2

The time it takes for gaussian elimination to work on a system of equations is directly related to the number of equations in the system.

Gaussian elimination is a method used in linear algebra to solve systems of linear equations. It involves manipulating the coefficients of the equations in a specific way so that the solution is easier to find.

When comparing a system of 1000 equations to a system of 500 equations, the time it takes for gaussian elimination to work on the larger system is significantly longer.

This is because the number of operations required to solve the system increases as the size of the system increases.

To be more specific, the number of operations required for gaussian elimination is proportional to the square of the number of equations in the system.

This means that if a system of 500 equations requires 1000 operations, a system of 1000 equations would require 2000 operations.

So, we can expect gaussian elimination to take about twice as long to work on a system of 1000 equations compared to a system of 500 equations.

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From the information provided in this question, it is not possible to accurately determine the proportion of winning actresses who were between 30 and 40 years old when they won the Oscar or the shape of the distribution.

The histogram only provides the frequencies (proportions) of actresses at different age ranges (e.g. 0.39, 0.40, 0.41, 0.45), but it does not provide information about the actual ages or the number of actresses.

In order to determine the proportion of winning actresses within a specific age range, additional information such as the number of actresses in each age group or a plot of the actual ages would be necessary. Similarly, the shape of the distribution cannot be determined accurately based on the information provided, as the histogram only provides the frequencies.

Therefore, the information provided is not sufficient to answer the questions asked.

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The probability of getting an no head is 1/8 or 12.5%

A probability is a number that reflects the chance or likelihood that a particular event will occur. Probabilities can be expressed as proportions that range from 0 to 1, and they can also be expressed as percentages ranging from 0% to 100%.

Probability = sample space / total outcome

The total outcome of tossing a coin thrice is 8

The sample space of getting no head i.e (TTT) is 1

Therefore the probability of getting no head = 1/8

in percentage; 1/8 × 100 = 100/8 = 12.5 %

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Answer:

Step-by-step explanation:

i know

Answer:

x=2

Step-by-step explanation:

vertical line so X is the same regardless Y values

so x=2

Answer: x=2

Step-by-step explanation:

A declared limit to the number of impressions that will be made from a particular plate (or matrix) is known as an "impression limit".

An "impression limit" is a predetermined maximum number of times that a printing plate (also known as a matrix) can be used to make an impression on the printing material before it becomes worn and less effective. The purpose of setting an impression limit is to ensure consistent, high-quality printing results.

A printing plate is typically made of metal, plastic, or rubber and is used to transfer an image or text onto paper or another printing surface. Each time the plate makes an impression on the printing material, a small amount of wear and tear occurs, causing the plate to degrade over time.

To prevent this degradation, an impression limit is set for each plate. This limit specifies the maximum number of times that the plate can be used before it needs to be replaced. The impression limit helps to ensure that each plate is used for a specific number of impressions only and then replaced, which helps to ensure consistent, high-quality printing results.

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Using the distance formula, the most precise classification of LMNP is a parallelogram.

The distance formula is a mathematical equation used to find the distance between two points in a plane. It is given by the following formula:

d = √[(x₂ - x₁)² + (y₂ - y₁)²],

where d is the distance between the points (x₁, y₁) and (x₂, y₂).

we shall evaluate the distance between each points as follows:

distance between L and M = √[[-2 - (-5)]² + (14 - 8)²]

distance between L and M= √(3³ + 6²)

distance between L and M= √45

distance between M and N = √[[12 - (-2)]² + (7 - 14)²]

distance between M and N = √[14² + (-7)²]

distance between M and N = √245

distance between N and P = √[(9 - 12)² + (1 - 7)²]

distance between N and P = √[(-3)² + (-6)²]

distance between N and P = √45

distance between P and L = √[(-5 - 9)² + (8 - 1)²]

distance between P and L = √[(-14)² + 7²]

distance between P and L = √245.

Therefore, using the distance formula, the most precise classification of LMNP is a parallelogram.

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The cost of each shirt Bobby and Davonte bought if they both spent $145.20 on 11 shirts is $13.2

Total number of shirts bobby and Davonte bought = 11

Amount Bobby spent on shirts= $92.40

Amount Davonte spent on shirts= $52.80

Total amount both spent= $92.40 + $52.80

= $145.20

Cost of each shirt= Total amount both spent / Total number of shirts bobby and Davonte bought

= $145.20 / 11

= $13.2

Therefore, each shirt Bobby and Davonte bought cost $13.2

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Answer:

1050 feet

Step-by-step explanation:

We know

A cheetah runs 420 feet in 6 seconds

Find how many feet the cheetah runs in 1 second by taking

420 / 6 = 70 feet

How many feet could a cheetah run in 15 seconds?

70 x 15 = 1050 feet

So, the cheetah could run 1050 feet in 15 seconds.

Answer:

[tex]\frac{7}{20}[/tex] = [tex]\frac{14}{40}[/tex]

Step-by-step explanation:

We know

Joe can eat 7 hot dogs in 20 minutes.

How long would it take him to eat 14 hot dogs?

We see that the number of hot dogs is now doubled, so we double the 20 minutes too.

So, the answer is

[tex]\frac{7}{20}[/tex] = [tex]\frac{14}{40}[/tex]

When, he has 106 pieces of candy and wants to use them all 9 red bags can he make.

Division is the process of splitting a number or an amount into equal parts.

Division is one of the four basic operations of arithmetic, the ways that numbers are combined to make new numbers. The other operations are addition, subtraction, and multiplication.

here, we have,

a blue bag contains 7 pieces of candy while a red bag contains 13 pieces of candy.

if he has 106 pieces of candy.

red bags can he make = 106/13

                                      =8+ remainder 2

so, if he wants to use all in red bag,

then he has to make red bag = 8+1

                                                 =9 bags

Hence, if he has 106 pieces of candy and wants to use them all 9 red bags can he make.

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The answer that gives the best estimate for the number of hours she worked that week would be = 11.25x+30=159.5

The normal amount she earns per hour in a week = $11.25 per hour.

The extra cash she earned during the week = $30

The total amount she received during the week = $159.50

Let the number of hours she worked = X

Therefore, 11.25x+30=159.5 show the number of hour she worked per week.

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Complete question:

Jovana makes $11.25 per hour at her part-time job. During one week, she also earned $30 in tip money, and her final pay for the week was $159.50. Which answer gives the best estimate for the number of hours she worked that week?

11.25+30=159.5x

11.25x + 30x=159.5

11.25x+30=159.5

11.25x+30=159.5x

Answer: Your answer is 2x2√7 (Please Mark Branliest)

Step-by-step explanation:

Step 1: Rewrite 28x4 as (2x2)2⋅7

Step 1.1: Factor 4 out of 28 which should get you √4(7)x4

Step 1.2: Rewrite 4 as 22 which should get you √22⋅7x4

Step 1.3: Rewrite x4 as (x2)2 which should get you √22⋅7(x2)2

Step 1.4: Move the 7 which should get you √22(x2)2⋅7

Step 1.5: Rewrite 22(x2)2 as (2x2)2 which sould get you √(2x2)2⋅7

Step 2: Pull terms out from under the radical to get yourself 2x2√7

The  total distance traveled by the "super ball" is 49 meters.

1. First bounce: The ball drops from 16 meters above the ground and rises to [tex]\(\frac{3}{4}\)[/tex] of that height.

Distance traveled in the first bounce:

[tex]\[16 + \frac{3}{4} \times 16\][/tex]

2. Second bounce: The ball drops from the new height and rises to [tex]\frac{3}{4}\)[/tex] of that height.

Distance traveled in the second bounce:

[tex]\[\left(\frac{3}{4} \times 16\right) + \frac{3}{4} \times \left(\frac{3}{4} \times 16\right)\][/tex]

3. Third bounce: The ball drops from the new height and rises to [tex]\(\frac{3}{4}\[/tex] ) of that height.

Distance traveled in the third bounce:

[tex]\[\left(\frac{3}{4} \times \left(\frac{3}{4} \times 16\right)\right) + \frac{3}{4} \times \left(\frac{3}{4} \times \left(\frac{3}{4} \times 16\right)\right)\][/tex]

Now, the total distance traveled

[tex]\[ \text{Total distance traveled} = \left(16 + \frac{3}{4} \times 16\right) + \left(\frac{3}{4} \times 16 + \frac{3}{4} \times \left(\frac{3}{4} \times 16\right)\right)[/tex]

                                         [tex]+ \left(\frac{3}{4} \times \left(\frac{3}{4} \times 16\right) + \frac{3}{4} \times \left(\frac{3}{4} \times \left(\frac{3}{4} \times 16\right)\right)\right) \][/tex]

[tex]\[\text{Total distance traveled} = 16 + 12 + 9 + \frac{27}{4} + \frac{81}{16}\][/tex]

[tex]\[\text{Total distance traveled} = 16 + 12 + 9 + \frac{27}{4} + \frac{81}{16}[/tex]

                                       [tex]= 16 + 12 + 9 + \frac{108}{16} + \frac{81}{16} \][/tex]

[tex]\[\text{Total distance traveled} = 16 + 12 + 9 + \frac{108 + 81}{16}[/tex]

                                    [tex]= 16 + 12 + 9 + \frac{189}{16} \][/tex]

Add the whole numbers and fractions separately:

[tex]\[\text{Total distance traveled} = 37 + \frac{189}{16}\][/tex]

Now, convert the improper fraction to a mixed fraction:

[tex]\[ \frac{189}{16} = 11\frac{13}{16} \][/tex]

Finally, add the whole number and the mixed fraction:

[tex]\[ \text{Total distance traveled} = 37 + 11\frac{13}{16} \][/tex]

So, the total distance traveled by the "super ball" is :

[tex]\[ \text{Total distance traveled} = 37 + 12 = 49 \text{ meters} \][/tex]

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