which two ratios represent quantities that are proportional A 7/10 and 10/10 B 20/28 and 15/18 C 18/48 and 21/56 D 3/5 and 13/10

Answer:

1: 2.097,2: 1000,3: 1.4282,4: 10000,5: 2.774546,6: 10,7: 2.00141,8: 1000,9: 100,10: 10

Step-by-step explanation:

Multiplication and division I don't know how to explain it lol

The coordinates of point A′ are (4.5, 3), the answer is A′(4.5, 3).

A triangle is a polygon with three sides and three angles. It is a two-dimensional figure that is formed by connecting three non-collinear points. The sum of the angles in a triangle is always 180 degrees, and the side opposite to the largest angle is the longest side of the triangle, while the side opposite to the smallest angle is the shortest side.

In this problem, we are given a triangle ABC with vertices at A(3, 2), B(2, −1), C(−2, 1), and we are asked to dilate it using a scale factor of 1.5 to create triangle A′B′C′.

Dilation is a transformation that changes the size of a figure but not its shape. To dilate a figure, we multiply the coordinates of each point by a scale factor. In this case, we are given a scale factor of 1.5, so we will multiply each coordinate of triangle ABC by 1.5 to get the coordinates of triangle A′B′C′.

To find the vertex of point A′, we need to apply the dilation to the coordinates of point A(3, 2). Multiplying the x-coordinate by 1.5, we get 1.5 × 3 = 4.5. Multiplying the y-coordinate by 1.5, we get 1.5 × 2 = 3.

Therefore,  the coordinates of point A′ are (4.5, 3), the answer is A′(4.5, 3).

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Answer:

2. x-10=24

Step-by-step explanation:

x is the unknown amount of candy that Charlie has.

He gives ten away (-10).

Now he has 24 pieces.

x-10 = 24

The distance between the parallel lines y = -1/3x + 3 and y = -1/3x - 7 is approximately 9.49 units.

A parallel line is a pair of lines that never cross and are always spaced at the same distance apart. The y-intercepts are different, but they have the same slope. In other terms, two lines are parallel if they have the same slope but distinct y-intercepts. Due to their role in defining and producing forms like rectangles, parallelograms, and trapezoids, parallel lines play a crucial role in geometry and trigonometry. In the actual world, parallel lines are also used in things like roads, railroad tracks, and electrical cables.

The standard equation of the line is given as:

y = mx + c

where, m is the slope.

c is the y-intercept.

Comparing the equation with the given equation we have the slope of the parallel lines as:

y = -1/3x +3 and y =-1/3x -7

slope = m = -1/3

y-intercept of 1st line = (0, 3)

y-intercept of the 2nd line = (0, -7)

The distance between two parallel lines is the perpendicular distance between them.

To calculate the perpendicular distance we find the equation of the perpendicular line.

The slope of the perpendicular line is negative reciprocal of the slope of the two given lines, which is 3.

The point-slope form is:

y - y1 = m(x - x1)

Substituting the values:

y - 3 = 3(x - 0)

y = 3x + 3

The intersection of this perpendicular line with the other line.

3x + 3 = -1/3x - 7

10/3x = -10

x = -3

Substituting x = -3 into either equation of the parallel lines gives:

y = -1/3(-3) - 7 = -6

Using the distance formula we have:

d = √((x2 - x1)² + (y2 - y1)²)

d = √((-3 - 0)² + (-6 - 3)²)

d = √(9 + 81)

d = √(90)

d ≈ 9.49

Hence, the distance between the parallel lines y = -1/3x + 3 and y = -1/3x - 7 is approximately 9.49 units.

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The value of the median of the data is 35.

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

A box plot is a graphical representation of a data set that shows the distribution of the data, as well as the central tendency and the variability of the data. In this case, the box plot displays the number of push-ups completed by 9 students in a PE class.

The box plot has a number line from 9 to 56 with tick marks every 2 units. The box extends from 20 to 42.5 on the number line, which means that the middle 50% of the data (i.e., the interquartile range) lies between 20 and 42.5. The line in the box represents the median of the data, which is the value that separates the data set into two equal halves.

In this case, the line in the box is at 35, which means that half of the students completed more than 35 push-ups, while the other half completed fewer than 35 push-ups.

Therefore, the value of the median of the data is 35.

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The probability of drawing a vowel, replacing it, and then drawing a Z is 5/676.

The alphabet consists of 26 letters, and 5 of them are vowels (A, E, I, O, U). Hence, 5/26 of the time, a vowel will be drawn in the initial draw.

The likelihood of drawing a Z on the second draw is also 1/26, due to the fact that the card is changed after the first draw.

We can multiply the probabilities to determine the likelihood that both of these occurrences will occur:

P(Draw a Z after a vowel is drawn) = P(Draw a vowel) P(Draw a Z after the vowel is replaced) = (5/26) (1/26) = 5/676

As a result, the likelihood of drawing a Z after substituting a vowel is 5/676.

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The next number in the sequence is 47, 1, and 27.

A series of numbers is called a number series. We must identify the rules that lead to the formation of a number series in order to answer the questions about number series. The questions that might arise from these topics are as varied as these series themselves.

One possible pattern in this sequence is that each number is the reverse of the sum of the digits of the previous number, followed by the next odd number. Applying this pattern to the given sequence, we have:

The reverse of 63 is 36. The sum of the digits of 63 is 6 + 3 = 9. Therefore, the next number is 36 + 9 = 45, followed by the next odd number, which is 47. So the next number is 47.

The reverse of 00 is 00. The sum of the digits of 00 is 0 + 0 = 0. Therefore, the next number is 00 + 0 = 0, followed by the next odd number, which is 1. So the next number is 1.

The reverse of 22 is 22. The sum of the digits of 22 is 2 + 2 = 4. Therefore, the next number is 22 + 4 = 26, followed by the next odd number, which is 27. So the next number is 27.

Therefore, the next number in the sequence is 47, 1, 27.

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To solve problems with integers, first, you must identify which operation you need to  first then, you need to think about which mathematical operations you need to use.

What is integers ?

Integers are a set of whole numbers that include both positive and negative numbers, as well as zero. Integers can be represented on a number line that extends infinitely in both directions.

To solve problems with integers, you need to understand the basic operations such as addition, subtraction, multiplication, and division. You also need to know the rules and properties of integers, such as the commutative, associative, and distributive properties, as well as the rules for adding, subtracting, multiplying, and dividing positive and negative integers.

When solving a problem with integers, you should first identify which operation you need to perform first based on the order of operations. This order is typically remembered with the acronym PEMDAS (parentheses, exponents, multiplication and division, and addition and subtraction). Once you have identified the operation, you can use the appropriate mathematical technique to solve the problem.

Therefore, to solve problems with integers, first, you must identify which operation you need to  first then, you need to think about which mathematical operations you need to use.

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Answer:

Step-by-step explanation:

We can use the given formula to set up an equation and solve for x:

V = 20,000(0.8)x

where V is the value of the car after x years.

We want to find x when the value of the car is $8,200, so we set V equal to 8,200 and solve for x:

8,200 = 20,000(0.8)x

Dividing both sides by 20,000:

0.41 = 0.8x

Taking the natural logarithm of both sides:

ln(0.41) = x ln(0.8)

Dividing both sides by ln(0.8):

x = ln(0.41) / ln(0.8)

Using a calculator:

x ≈ 6.11

Therefore, it will take about 6.11 years for the car to be worth $8,200.

The sample size οf 50 might nοt be large οr randοm enοugh, and there might be sοme systematic bias οr errοr in the data sοurces, leading tο a large difference between the sample mean (38) and Admissiοns and Recοrds data (25) in estimating the average class size οf Basic Statistics classes at the cοllege.

Statistics is a branch οf mathematics that deals with the cοllectiοn, analysis, interpretatiοn, presentatiοn, and οrganizatiοn οf data. It invοlves the use οf mathematical tοοls and techniques tο extract useful infοrmatiοn frοm data, and tο make decisiοns οr predictiοns based οn that infοrmatiοn.

In the given scenariο, it seems that there might be an issue with the methοd used tο cοllect the data, οr the data sοurces might be different. The sample size οf 50 students is nοt large enοugh tο represent the whοle pοpulatiοn οf Basic Statistics classes at the cοllege, especially if the cοllege has many sectiοns οf the class οr the class size varies widely between sectiοns. Mοreοver, the sample might nοt be truly randοm, as there cοuld be sοme bias in hοw the sample was selected, such as selecting οnly students frοm a particular sectiοn οr time slοt.

Alsο, the difference between the average class size οbtained frοm the sample (38) and the οne οbtained frοm Admissiοns and Recοrds (25) is tοο large tο attribute tο randοm variatiοn, which suggests that there might be sοme systematic bias οr errοr in either the sample οr the Admissiοns and Recοrds data.

Tο get a mοre accurate estimate οf the average class size οf Basic Statistics classes at the cοllege, a larger and mοre representative sample might be needed, οr the data cοllectiοn methοd might need tο be revised.

Hence, The sample size οf 50 might nοt be large οr randοm enοugh, and there might be sοme systematic bias οr errοr in the data sοurces, leading tο a large difference between the sample mean (38) and Admissiοns and Recοrds data (25) in estimating the average class size οf Basic Statistics classes at the cοllege.

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Answer:

43 degrees

Step-by-step explanation:

85 degrees + 25 = 110 and the angle sum for a right triangle will always equal 180 degrees. The outside angle is 62 degrees, so 62 +70= 132. 180-132 is 48. Now you want to solve the angle sum for the shorter wider triangle. We know one angle is 89 degrees, plus the 48 degrees= 137. Now to find ? do 180-137=43. The missing angle for ? is 43 degrees.

I hope this helps :)

Answer:

2/5

Step-by-step explanation:

So if you were to half that the bottom stays the same but the top you divide by two which 4 divided by 2 is 2 so you would need 2/5 cup of flour for your new recipe.

The greatest common factor of 4x³y² and 12x²y is: 4x²y.

The GCF is a term used to refer to the largest common factor between any two or more numbers (Greatest Common Factor). The GCF of two natural integers, x and y, is the largest possible number that equally and completely divides both x and y. GCF is typically calculated using the following three techniques: division, multiplication, and prime factorization.

Now in the given question,

4x³y² can be written as = 2×2×x×x×x×y×y

12x²y can be written as = 2×2×3×x×x×y

The common factors among them are:

2×2×x×x×y = 4x²y.

Therefore, the greatest common factor of 4x³y² and 12x²y is: 4x²y.

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Answer:

$585 dollars will be used for cleaning supplies out of the total of $900 that was collected over the six days.

Step-by-step explanation:

$150.00 (money each day) * 6 (number of days) = $ (total)

[tex]150*6=900[/tex]

$900 in 6 days

100% (total amount) - 35% (pet food) = % (cleaning supplies)

[tex]100-35=65[/tex]

65% of his money will be used for cleaning supplied

Change the percentage into a decimal

65% = [tex]0.65[/tex]

Multiply the total amount of money by the decimal

[tex]900*0.65=585[/tex]

Out of the total $900 dollars he collected over 6 days, $585 dollars will be used for cleaning supplies and the rest ($315) will be used on pet food.

50

Step-by-step explanation:

plot it on the number line

Answer:

0.0166666666666666666666666666666666666666666667

Step-by-step explanation:

USE CALCULATORRRRRR

Answer:

9.4ft²

Step-by-step explanation:

The formula for the area of a rectangle is base*height, or b*h.

Since we know the final area of the room and one of the side lengths, we can plug those into the formula I just stated so that we get

15*h=141

All that's left to do is solve for h, which is the other side that we are solving for. To do this, we will divide 15 on both sides:

15h/15=141/15

The 15s on the left side cancel out, and we simply divide 141 by 15 to get our final answer of 9.4ft².

We can write the expression in the simplest form as -

[tex]$4x^{2} y^{2} \sqrt[3]{x^{2} y^{2} }[/tex].

An expression is a term made up of both constants and variables.

Given is the expression as -

[tex]$(8x^{7} y^{4} )^{2/3} \\[/tex]

We can solve as -

[tex]$(8x^{7} y^{4} )^{2/3} \\[/tex]

[tex](8^{2/3} x^{7\times\frac{2}{3} } y^{4\times\frac{x}{y} 2/3})[/tex]

[tex]$4x^{2} y^{2} \sqrt[3]{x^{2} y^{2} }[/tex]

Therefore, we can write the expression in the simplest form as -

[tex]$4x^{2} y^{2} \sqrt[3]{x^{2} y^{2} }[/tex].

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The linear equation on the graph is written as:

y = 20x + 10

Remember that the general linear equation can be written as:

y = a*x + b

Where a is the slope and b is the y-intercept.

By looking at the graph, we can see that the line intercepts the y-axis at y = 10, then the y-intercept is b = 10.

We can write:

y = a*x + 10

Now we can also identify the point (1, 30), replacing the values of that point in the equation above we will get:

30 = a*1 + 10

30 = a + 10

30 - 10  =a

20  =a

Then the linear equation is:

y = 20x + 10

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The area of the irregular room is  82.5 ft²

It is important to note that the area of a triangle is represented with the formula

A = 1/2bh

Given that;

From the image shown, we have that;

Area of the figure = sum of the areas of the two triangle

This represented as;

Area = 1/2 × 14(6) + 1/2 × 9(9)

expand the brackets

Area = 1/2 (84) + 1/2(81)

divide the values

Area = 42 + 40. 5

Add the values

Area = 82.5 ft²

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If the base triangle has a base of 8 meters and a height of 6.9 meters. the surface area of the pyramid is 139.6 square meters.

First, let's find the area of the base triangle:

Area of base triangle = (1/2) * base * height

Area of base triangle = (1/2) * 8 * 6.9

Area of base triangle = 27.6 square meters

Now, let's find the area of one of the triangular faces:

Area of triangular face = (1/2) * base * height

Area of triangular face = (1/2) * 8 * 7

Area of triangular face = 28 square meters

Since the pyramid has four triangular faces, the total area of the triangular faces is 4 times the area of one triangular face, which is:

4 * 28 = 112 square meters

Total surface area = area of base triangle + area of triangular faces

Total surface area = 27.6 + 112

Total surface area = 139.6 square meters

Therefore, the surface area of the pyramid is 139.6 square meters.

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Answer:

D

y=5x-3

0=5x-y+3

5x-y= -3

The value of c is given as follows:

c = -1.235.

The z-score of a measure X of a variable that has mean symbolized by [tex]\mu[/tex] and standard deviation symbolized by [tex]\sigma[/tex] is obtained by the rule presented as follows:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

For this problem, we have that P(z > c) = 0.8914, meaning that Z when X = c has a p-value of 1 - 0.8914 = 0.1086, hence the value of c is given as follows:

c = -1.235.

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Using the altitude or leg rule, we have:

x ≈ 42.7  

y = 40

z ≈ 53.4

The leg rule is given as:

hypotenuse/leg = leg/part.

The altitude rule is:

left/altitude = altitude/right

To find the value of x, apply the altitude rule:

left = x

right = 24

altitude = 32

Substitute:

x/32 = 32/24

Cross multiply:

24x = 32²

24x = 1,024

x ≈ 42.7  

To find y, apply the leg rule:

leg = y

part = 24

hypotenuse = x + 24 = 42.7 + 24 = 66.7

Substitute:

66.7/y = y/24

y² = 1,600.8

y = √1x00.8

y = 40

To find z, apply the leg rule:

leg = z

part = x = 42.7  

Hypotenuse = 66.7

Substitute:

66.7/z = z/42.7

z² = 2,848.09

z = √2,848.09

z ≈ 53.4

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Solution of equation 16x - 22 = 20x + 14 is x = -8

An equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Given equation

16x - 22 = 20x + 14

Moving like terms to same side

- 20x + 16x = 14 + 22

Adding like terms

-4x = 36

Dividing by -4 on both sides

x = 36/-4

x = -8

Hence, x = -8 is the solution of equation 16x - 22 = 20x + 14.

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Complete question is:

Find the value of x, in equation 16x - 22 = 20x + 14

The triangle AEC is similar to triangle BDC.

Those triangles look the same but are different in size.

And in similar triangles,

the corresponding sides are in proportion to each other and the corresponding angles are equal to each other.

Given:

5. ΔAEC is a triangle.

Assuming BD is parallel to AE.

The ratio of the corresponding sides,

10/5 = 2

8/4 = 2

The ratio is constant.

A similar triangle is made by drawing a line parallel to one of the triangle's sides.

Therefore, triangle AEC ~ triangle BDC.

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The coordinate point for the centroid are (8/3, 1/3).

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

Coordinates = (1,2), (2, 1) and (5, -2)

To find the centroid of a triangle, you can calculate the average of the x-coordinates and the average of the y-coordinates of its three vertices.

Let (x1, y1), (x2, y2), and (x3, y3) be the coordinates of the vertices of a triangle.

Then, the coordinates of the centroid (xc, yc) are given by:

xc = (x1 + x2 + x3) / 3

yc = (y1 + y2 + y3) / 3

Substitute the known values in the above equation, so, we have the following representation

xc = (1 + 2 + 5) / 3 = 8/3

yc = (2 + 1 - 2) / 3 = 1/3

Hence, the coordinates of the centroid are (8/3, 1/3).

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The word or phrase that describes the probability that Charlotte will win a prize, with a probability of 12%, is D. likely.

Probability refers to the likelihood of an expected outcome occurring, given the many possible chances.

Probability lies between zero and one, depending on the level of certainty or otherwise of the successful outcomes.

In this situation, Charlotte's chances of winning cannot be described as impossible, zero percent, or unlikely.

Charlotte does not have an equal chance or 50-50 odds of winning because the probability is not up to 50%.

Thus, we can conclude that Charlotte has a D. likely opportunity of winning.

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