Josiah kept track of how many songs of each genre were played in an hour from his MP3 player. The counts are displayed in the table below. He has a total of 1,500 songs on his player. Josiah predicted the number of rock songs on his MP3 player to be 300 songs. Which statements about his solution are true? Select three choices. Josiah’s Music Sample 1 Sample 2 R & B 5 R & B 4 Pop 4 Pop 3 Classical 3 Classical 5 Jazz 2 Jazz 4 Rock 6 Rock 4 Josiah’s work: StartFraction 10 over 20 EndFraction = StartFraction x over 1,500 EndFraction. StartFraction 10 times 30 over 20 times 30 EndFraction = StartFraction x over 1,500 EndFraction. 300 = x. He should have found the average of the number of rock songs by averaging 4 and 6 to get 5. He did not multiply the numerator and denominator by the correct number to equal 1,500. His answer will be one-half of what he got because he did not divide 10 by 2 when setting up the proportion. He can only solve the proportion by multiplying the numerator and denominator by a common multiple. He should have multiplied the numerator and denominator by 75, not 30, because 20 times 75 = 1,500.

Answer: The researcher has made a Type II error in this case.

A Type II error occurs when the null hypothesis is not rejected even though it is false, i.e., the researcher fails to detect a significant difference when one actually exists. In this case, the null hypothesis is that the mean weight of the spice packets is 50 g, and the researcher has failed to reject this null hypothesis based on the sample mean of 50 g.

However, the population mean is not actually 50 g, and the researcher has made an error in failing to detect this difference. The sample size of 60 boxes may not have been large enough to detect a significant difference, or there may have been other factors that affected the measurements.

Therefore, the researcher has made a Type II error in this case by failing to reject the null hypothesis when it is actually false.

Step-by-step explanation:

Answer:true

Step-by-step explanation:

1. The volume of a cone is  8π cubic inches.

2. The volume of a sphere is  8π cubic inches.

3. The volume of a cube is  8π cubic inches.

4. The volume of a cylinder is  8π cubic inches.

5. The volume of a rectangular prism is  8π cubic inches.

The volume of a thing is the area that it occupies in three dimensions. Space is what a thing occupies, to put it simply.

1. The volume of a cone is given by V = (1/3)πr²h, where r is the radius and h is the height. Substituting the given values, we get V = (1/3)π(2²)(6) = (4/3)π(6) = 8π cubic inches.

2. The volume of a sphere is given by V = (4/3)πr³, where r is the radius. Substituting the given value, we get V = (4/3)π(24³) = 18432π cubic inches.

3. The volume of a cube is given by V = s³, where s is the side length. Substituting the given value, we get V = 6³ = 216 cubic inches.

4. The volume of a cylinder is given by V = πr²h, where r is the radius and h is the height. Substituting the given values, we get V = π(4²)(5) = 80π cubic inches.

5. The volume of a rectangular prism is given by V = lwh, where l, w, and h are the length, width, and height, respectively. Substituting the given values, we get V = (9)(5)(5) = 225 cubic inches.

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The equations that represent the plants' height after any given number of days are as follows;

y = 2x + 5

y = 3x + 3

The height of the first plant is 33 cm.

The height of the second plant is 48 cm.

Based on the information provided above, the first plant is 5 cm high and the plant grows 2 cm per day. Therefore, the total height, y, can be represented by this equation:

y = 2x + 5

where:

x represents the number of days.

For the second plant, we have:

y = 3x + 3

After 15 days, the total height of each plant is given by;

First plant, y = 2x + 5 = 2(15) + 3 = 33 cm.

Second plant, y = 3x + 3 = 3(15) + 3 = 48 cm.

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Answer: The area of a square is given by the formula A = s^2, where s is the length of a side of the square.

In this case, the length of the field is 5x³y5, so each side of the square is also 5x³y5. Therefore, the area of the square can be found as:

A = (5x³y5)^2

A = 25x^6y^10

So the area of the field in terms of x and y is 25x^6y^10.

Step-by-step explanation:

The prove that triangle ABE is congruent to triangle CDE is given below

Generally, To prove that triangle ABE is congruent to triangle CDE, we need to show that they have the same size and shape.

First, we can see that angle AED and angle CEB are opposite angles and therefore congruent, since AB || DC.

Also, since line AB = line DC, we know that segment AE is congruent to segment CE and segment BE is congruent to segment DE.

Using these congruent sides and the congruent angle, we can apply the Side-Angle-Side (SAS) congruence criterion to conclude that triangle ABE is congruent to triangle CDE.

Therefore, we have proven that triangle ABE is congruent to triangle CDE.

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The second bar represents the price range from $2.51 to $5.00, so the data set includes the value of 4.53 and the value of 5.00 the correct answer is {0.50, 2.00, 2.52, 3.37, 4.53, 5.00, 8.99}

A histogram is a graph used to represent the frequency distribution of a few data points of one variable. Histograms often classify data into various “bins” or “range groups” and count how many data points belong to each of those bins.

The histogram shows the number of items sold at various price ranges, and the heights of the bars indicate the number of items sold within each price range.

The data set that is represented in the histogram is:

{0.50, 2.00, 2.52, 3.37, 4.53, 5.00, 8.99}

This is because the histogram has four bars with heights of 2, 4, 0, and 1, which correspond to the number of items sold in each of the four price ranges shown.

The values in the data set correspond to the boundaries of these price ranges. For example, the first bar represents the price range from $0.00 to $2.50, so the data set includes the value 2.00 (which is within this range) and the value 2.52 (which is just outside this range).

Similarly, the second bar represents the price range from $2.51 to $5.00, so the data set includes the value of 4.53 (which is within this range) and the value of 5.00 (which is the upper boundary of this range).

Therefore, the second bar represents the price range from $2.51 to $5.00, so the data set includes the value of 4.53 and the value of 5.00 the correct answer is {0.50, 2.00, 2.52, 3.37, 4.53, 5.00, 8.99}

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All the central angles are,

Red= 100°

blue= 150°

green= 50°

purple= 60°

The circle is a closed two dimensional figure , in which the set of all points is equidistance from the center.

Given that;

The data below shows the colors preferred by a group of people.

Cooler          Number of people

Red=                 20

blue=                 30

green=               10

purple=              12

Now, Total number of Peoples is,

⇒ 20 + 30 + 10 + 12

⇒ 72

Hence, We get;

Proportion of Red = 20/72 = 5/18 = 10/36

Central angle = 5/18 x 360 = 100°

Proportion of Blue = 30/72 = 15/36

Central angle = 15/36 x 360 = 150°

Proportion of Green = 10/72 = 5/36

Central angle = 5/36 x 360 = 50°

Proportion of Purple = 12/72 = 1/6 = 6/36

Central angle = 1/6 x 360 = 60°

Thus, All the central angles are,

Red= 100°

blue= 150°

green= 50°

purple= 60°

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Answer:

864 sq cm

Step-by-step explanation:

Surface area of cube = 6 × (l)square units. = 6 × 12cm × 12cm = 6 × 144cm = 864cmsquare.

Answer:

We can use the given equation to solve for the advertising expenditures needed to achieve the target sales volume of $125,000:

125 = 45.15 + 0.54x

where x is the advertising expenditures in thousands of dollars.

Simplifying the equation:

0.54x = 125 - 45.15

0.54x = 79.85

x = 79.85 / 0.54

x ≈ 147.69

Therefore, the sales manager should allocate about $147,690 for advertising in the budget to achieve the target sales volume of $125,000.

Step-by-step explanation:

Answer:

Step-by-step explanation:

We can start by setting up an equation to solve for x, the number of years it will take for the car to be worth $8,200:

8200 = 20000(0.8)^x

Dividing both sides by 20,000, we get:

0.41 = 0.8^x

Taking the logarithm of both sides (using any base, as long as we're consistent), we get:

log(0.41) = log(0.8^x)

Using the property of logarithms that allows us to bring down the exponent as a coefficient, we get:

log(0.41) = x log(0.8)

Dividing both sides by log(0.8), we get:

x = log(0.41) / log(0.8)

Using a calculator, we find:

x ≈ 5.92

Therefore, it will take about 5.92 years for the car to be worth $8,200.

The weight of the kitten is expected to rise by 0.2 ounces for every extra day after birth. The correct answer is B.

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation is given as,

y = mx + c

Where m is the slope of the line and c is the y-intercept of the line.

For the first three months following birth, data on kitten weight (in ounces) was gathered. A line of fit was constructed through the scatter plot with the equation w = 2.75 + 0.2d, where w is the kitten's weight in ounces and d is the kitten's age in days.

For each additional day after the kitten is born, its weight is predicted to increase by 0.2 ounces. Then the correct option is B.

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From the image given, inequality is -2≤x<8 from x≥-2, x<8. It serves as a concrete example of inequality.

Broadly speaking, a mathematical phrase that defines an order relationship between two integers equivalent algebraic expressions, showing whether one is bigger than, equal to, smaller than, or smaller than and equal to the other.

The sentence "5x - 4 > 2x + 3" seems like an equation because the mathematical sign for "equals" has indeed been replaced by an arrowhead. It serves as a concrete example of inequality. From the image given, inequality is -2≤x<8 from x≥-2, x<8.

Therefore, from the image given, inequality is -2≤x<8 from x≥-2, x<8.

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The equation of line is y = ( -6/5 )x + 2 , where the slope is m = ( -6/5 )

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

The slope m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Given data ,

Let the equation of line be represented as A

Now , the value of A is

Now , the slope of the line is m = ( y₂ - y₁ ) / ( x₂ - x₁ )

Substituting the values in the equation , we get

Slope m = ( -6/5 )

The y intercept of the line is b = 2

So , equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

On simplifying , we get

y = ( -6/5 )x + 2

Hence , the equation of line is y = ( -6/5 )x + 2 and the graph is plotted

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a. The six trigonometric functions of the angle β are:

sin β = 7/25

cos β = 24/25

tan β = 7/24

csc β = 25/7

sec β = 25/24

cot β = 24/7

b. Using trigonometric identity, cos X + (sin X)(tan X) = 1

We can use the given value of cos β = 24/25 to find the other trigonometric functions of the angle β.

Let's draw a right triangle with angle β, adjacent side of length 24, and hypotenuse of length 25 (since cos β = adjacent/hypotenuse):

Using the Pythagorean theorem, we can find the opposite side:

Opposite side = sqrt(hypotenuse^2 - adjacent^2) = sqrt(25^2 - 24^2) = sqrt(49) = 7

So the triangle is:

Now we can find the other trigonometric functions:

sin β = opposite/hypotenuse = 7/25

cos β = adjacent/hypotenuse = 24/25

tan β = opposite/adjacent = 7/24

csc β = hypotenuse/opposite = 25/7

sec β = hypotenuse/adjacent = 25/24

cot β = adjacent/opposite = 24/7

2. We can use the trigonometric identity for tangent:

tan X = sin X / cos X

to rewrite the expression as:

cos X + (sin X)(sin X / cos X)

Multiplying through by cos X, we get:

(cos X)(cos X) + (sin X)(sin X)

Using the Pythagorean identity:

(sin X)^2 + (cos X)^2 = 1

we can simplify further:

1 - (cos X)^2 + (cos X)^2 = 1

So the final simplified expression is equal to 1

3. We can start with the left-hand side of the equation and manipulate it using the definitions of the trigonometric functions and the Pythagorean identity until we arrive at the right-hand side:

tan²α(csc²α - 1)

= (sin²α/cos²α)((1/sin²α) - 1)

= (sin²α/cos²α - sin²α/cos²α)

= 0

Now, let's look at the right-hand side:

1

We see that the left-hand side simplifies to 0, while the right-hand side is 1. Therefore, the identity is not true for all values of α.

We can see this more clearly by picking a specific value of α and evaluating both sides of the equation. For example, let's take α = 45°:

tan²45°(csc²45° - 1) = (1/1)((2/1) - 1) = 1

1 = 1

So the identity holds for α = 45°, but we have already shown that it does not hold for all values of α. Therefore, the identity is not true for all values of α.

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The system of inequalities is y < x + 2 and 5y ≤ -2x + 10

From the question, we have the following parameters that can be used in our computation:

The blue and the red lines

For the blue line, we have the following points

(0, 2) and (-2, 0)

The equation is represented as

y = mx + c

Where

c = y when x = 0

So, we have

y = mx + 2

Using the points, we have

-2m + 2 = 0

m = 1

So, we have

y = x + 2

The lower part is shaded and the line is a dotted line

So, we have

y < x + 2

For the red line, we have the following points

(0, 2) and (5, 0)

The equation is represented as

y = mx + c

Where

c = y when x = 0

So, we have

y = mx + 2

Using the points, we have

5m + 2 = 0

m = -2/5

So, we have

y = -2/5x + 2

The lower part is shaded and the line is a shaded line

So, we have

y ≤ -2/5x + 2

Multiply through by 5

5y ≤ -2x + 10

Hence, the system is y < x + 2 and 5y ≤ -2x + 10

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The measures of the angles obtained using circle theorems are presented as follows;

a = 90°, b = 12°, c = 64°, d = 54°, e = 54°, f = 48°, g = 66°, h = 32°, i = 36°, and j = 20°

Circle theorems are theorems that indicates the relationships between angles, sector, chords, and tangent in a circle.

Please find the possible drawing in the question created with MS Word

a + a = 2·a = 180° (Linear pair angles)

a = 180°/2 = 90°

a = 90°

The right triangle with the acute angle angle of 78° indicates;

b = 90° - 78° = 12°

b = 12°

The angle at the center theorem indicates that we get;

The base angle of the large isosceles triangle = 2 × 32° = 64°

∠c is a base angle of the large triangle, therefore;

c = 64°

2·c + d = 180°

d = 180° - 2 × 48° = 54°

e = d = 54°

e = 54°

The angle at the circumference of the circle with angle ∠g and and ∠f = 4·b

Angle at the circumference = 4 × 12° = 48° = ∠f

f = 48°

Angle ∠g is equivalent to a base angle of the isosceles triangle, therefore;

∠g = (180° - 48°)/2 = 66°

g = 66°

Angle at the vertex of the triangle with angle h is equivalent to the base angle of the large triangle, therefore;

2·h = 64°

h = 64°/2 = 32°

h = 32°

Angle at the center = 2 × (180° - 2 × 48°) = 168°

5b + 2f + i + 168° = 360° (Angle sum property of a quadrilateral)

i = 360° - (5b + 2f + i + 168)

i = (360 - (5×12 + 2×48 + 168) = 36

i = 36

5b + 2h + i + j = 180

j = 180 - (5b + 2h + i)

j = 180 - (5 × 12 + 2 × 32 + 36) = 20°

j = 20°

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This could result in one, two, or multiple points of intersection, depending on the specific values of the deposits and the rates of increase.

What is Algebraic expression ?

Algebraic expression can be defined as combination of variables and constants.

we can assume that the graph of Cera's and Bethany's savings accounts will show the total amount of money in their accounts after a certain number of weeks.

Since both Cera and Bethany deposit the same amount of money and make the same additional deposits each week, their savings will increase at the same rate. Therefore, the graph will likely show two parallel lines that start at $20 and increase by $15 per week.

The number of solutions modeled by the graph will depend on whether the two lines ever intersect. If the lines do not intersect, then there is no solution to the system of equations that model the two savings accounts. In other words, there is no point at which the total amount of money in both accounts is the same.

On the other hand, if the lines do intersect, then there is at least one solution to the system of equations. In this case, the point of intersection represents the week at which the total amount of money in both accounts is the same.

To change the situation so that the graphs model a different number of solutions, we could change the initial deposit or the amount of money deposited each week for one or both of the savings accounts. For example, if Cera starts with a higher initial deposit than Bethany, or if Cera deposits more money each week, then their savings will increase at different rates and the lines on the graph will not be parallel.

Therefore, This could result in one, two, or multiple points of intersection, depending on the specific values of the deposits and the rates of increase.

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1. The Range of Elevation for Long beach is 367 feet.

2. The Range of Elevation for New Orleans is 33 feet.

3. New Orleans have the average of 2 feet below sea.

In statistics, the range is the difference between the highest and lowest values for a given data collection.

Given:

1. The Range of Elevation for Long beach

= Highest - Lowest

= 360 - (-7)

= 360 + 7

= 367 feet

2. The Range of Elevation for New Orleans

= Highest - Lowest

= 25- (-8)

= 25+ 8

= 33 feet

3. New Orleans have the average of 2 feet below sea.

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The answer to the probabilities are: (a) 0.8,  (b)  0.2  (c)  0.3  (d)  0.7

Probability is a branch of mathematics used to measure how likely something is to happen. It is calculated by taking into account the chance that a given event will occur, as well as taking into account an exhaustive set of equally likely outcomes

The percentage of married women is 80%

the number of women is 10

The probability that all of them dislike their mother in-laws is

P(x) = Number of required outcome/Number of possible outcomes

80/100 * 10  = 8 women

a)  P(All of them dislike their mother in-law is 8/10 = 0.8

b)  P(none of them dislike their mother-in-law is

P(x) = 1 0.8 = 0.2

c)  P(At least eight of them dislike their mother-in-law)

P(x) = 8, 9, 10 = 3

Therefore,  the probability is 3/10 = 0.3

d) P(no more than seven dislike their mother in-law

1,2,3,4,5,6,7 = 7

P(x) = 7/10 = .0.7

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1. The value of the variable 'x' is 10 that is written as x = 10.

2. The equation is ∠3 + ∠4 = 90°. Then angles ∠3 and ∠4 will be complementary angles.

3. The measure of angle ∠2 is 60° which is an acute angle.

The inclination is the separation seen between planes or vectors that meet. Degrees are another way to indicate the slope. For a full rotation, the angle is 360°.

1.  ∠1 = 6x + 45 and ∠3 = 9x + 15

Angle ∠1 and angle ∠3 are opposite angles. Then the equation is given as,

∠1 = ∠3

9x + 15 = 6x + 45

9x - 6x = 45 - 15

3x = 30

x = 30 / 3

x = 10

2.  Angle ∠2, angle ∠3, and angle ∠4 are supplementary angles. Then the equation is given as,

∠2 + ∠3 + ∠4 = 180°

90° + ∠3 + ∠4 = 180°

∠3 + ∠4 = 90°

3.  Angle ∠1 is 120°, then the measure of angle ∠2 is given as,

∠1 + ∠2 = 180°

120° + ∠2 = 180°

∠2 = 60° (acute)

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$54.28 rounded to the nearest 10 dollars is $50.00

Answer:

3×1×1.

Step-by-step explanation:

The restaurant gives us an Italian bread, a whole wheat role and a wrap:

Counted together that's 3.

Then they let us choose one type of meat:

Counted that's only 1.

Finally, they let us choose one type of cheese:

Counted that's also 1.

Together that makes 3×1×1.

(a) Commutative property of addition , (b) Distributive Property , (c) Associative Property of Multiplication , (d) Commutative property of multiplication and (e) Associative property of addition.

What is Associative Property ?

The associative property is a mathematical principle that states that the way in which factors are grouped in a multiplication or addition expression does not affect the final result. In other words, when using the associative property, we can add or multiply a group of numbers in any order we want, as long as we keep the order of the individual numbers the same.

(7 + 3) + 2 = 2 + (7 + 3)      Commutative property of addition

3(2x +4) = 6x + 12              Distributive Property

(9 * x) * 3 = 9 * (x * 3)         Associative Property of Multiplication

(8 * x * 2) = (8 * 2* x)          Commutative property of multiplication

(4 + 5) + 1 = 4 + (5 + 1)        Associative property of addition

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The logical form of this argument is -

Denying the Antecedent.

Denying the antecedent, sometimes also called inverse error or fallacy of the inverse, is a formal fallacy of inferring the inverse from the original statement.

It is committed by reasoning in the form :

If P, then Q. Therefore, if not P, then not Q.

Given is the argument as -

"If seven clowns are squeezed into a small car, we are at the circus. Seven clowns are not squeezed into a small car. So, we are not at the circus"

The logical form of this argument is -

Denying the Antecedent

Therefore, the logical form of this argument is -

Denying the Antecedent.

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Answer:

Step-by-step explanation:

The length of a rectangular picture frame is 3 inches longer than it's width. If the perimeter of the picture frame is 38 Inches, what is the length and width ?

Given :

Perimeter of rectangle is 38 Inches

lenght is 3 inches more than the breadth.

let, width be x, and length be x+3

So, Breadth is 8 inches and length is 8+3= 11 inches.

Let's verify ::

Thus Solved !!

Answer:

The new vertices of the rectangle after applying a scale factor of 3 with a center of dilation at (2, -4) are E'(-1, -11), F'(7, -11), G'(7, -15), and H'(-1, -15

Step-by-step explanation:

Answer:

Jumlah uang tabungan Elsa setiap bulan dapat dihitung dengan rumus:

A = P(1 + r)^n

dimana:

A = jumlah uang tabungan akhir

P = jumlah uang tabungan awal

r = tingkat bunga per bulan (dalam desimal)

n = jumlah bulan

Dalam kasus ini, P = Rp.2.000.000,00, r = 0,5% atau 0,005 per bulan, dan n = 10 bulan.

Maka,

A = 2.000.000(1 + 0,005)^10

= 2.000.000(1,005)^10

= 2.000.000(1,0512)

= Rp.2.102.400,00

Jadi, jumlah uang tabungan Elsa di bank setelah 10 bulan adalah Rp.2.102.400,00.

Step-by-step explanation:

Answer: it is 4:2

Step-by-step explanation: because it is a ratio, both sides can be divided by the same number and still have the same meaning. btw in this case both divided by 2