The chairs in a school hall were arranged in 15 rows with 28 chairs in each row if these chairs were rearranged into rows of 20,how many rows of chairs would there be

Answer:

12 - 5 is 7 so the line would be 7 centimeters

Step-by-step explanation:

Answer:

the answer is 7

Step-by-step explanation:

12-5=7

Caroline saved $3. 84 on a discounted item that was marked down 15% off of the original price of the item. What was the original price of the item before the discount, the original price of the item was $4.52 before the discount.

Let the original price of the item be $x. The item was marked down by 15%, so the discounted price is 85% of the original price. This is equivalent to saying that the discounted price is 100% - 15% of the original price. Mathematically, we can write this as: 0.85x = discounted price

Since Caroline saved $3.84 on the discounted item, we can write an equation that equates the amount she paid for the item to the discounted price minus the amount she saved. Mathematically, we can write this as:

0.85x - 3.84 = amount paid

Solving for x (the original price) requires us to rearrange the equation to isolate x. Mathematically, we can write this as:

x = (amount paid + 3.84) / 0.85

Substituting in the given values gives: x = ($0.00 + $3.84) / 0.85 = $4.52

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Answer:

True

Step-by-step explanation:

An expected value is another term for the mean of a probability distribution. The number of successes in a binomial experiment must range from zero to n. In a binomial experiment, the number of successes can never exceed the number of trials. The probability of a success must exceed the probability of a failure.

If the point in question is on the line of reflection, then the point won't move. Any point on a line of reflection stays where it is.

If that same point is the center of dilation, then it also doesn't move. The center of dilation is the only point that doesn't move in a dilation.

So the two conditions are:

These two facts mean that the line of reflection must go through the center of dilation.

Answer:

Paul is correct

Step-by-step explanation:

You can add the distance of 0 to 6 AM and 0 to 12 PM, and doing so on a number line. On a number line you would add them and lets say 6 AM is 6 degrees and 12 PM is 12 degrees, you would add 6 and 12 to get 18. While doing so you would got 1 2 3 4 5 6 7 8 9 and so on. Thus, finding the difference.

I know I'm late but can I still get that brainliest

Answer:

ayo keen

Step-by-step explanation:

u there?

Answer:

B

Step-by-step explanation:

The range for the scores is 1.0 (from 9.9 to 8.9). The range is the difference between the highest and lowest numbers in a set of numbers. In this case, the highest score is 9.9 and the lowest score is 8.9, so the range is 1.0.

In mathematics, the range of a function can refer to one of two similar terms:

the common area of ​​the function

The image of the function

Given two groups X and Y, the binary relation f between X and Y is a (exact) function (X to Y), if there is a y in Y for every x in X, so f is associated with y. The sets X and Y are called the area of ​​f and the common domain, respectively.

The range is a measure of dispersion in a set of numbers. To find the range, you need to subtract the lowest score from the highest score. In this case, the scores for the Olympic gymnast are: 9.9, 9.8, 9.6, 9.5, 9.7, 9.1, 8.9, and 9.8.

First, identify the highest and lowest scores:
Highest score: 9.9
Lowest score: 8.9

Next, subtract the lowest score from the highest score:
Range = 9.9 - 8.9

The range for the scores is 1.0 (9.9 to 8.9).

Your answer: 1.0 (9.9 to 8.9)

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Answer:d

Step-by-step explanation:

The answer is d. None of the above is true.

To calculate velocity, we need to use the equation:

Velocity = M * P / Y

Given:

M = 1,000

P = 2.25

Y = 2,000

Plugging in the values:

Velocity = 1,000 * 2.25 / 2,000

Simplifying:

Velocity = 2.25 / 2

The result is:

Velocity = 1.125

Therefore, the correct answer is: d. None of the above is true.

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Answer::b.

Step-by-step explanation:

Step-by-step explanation:

x = 6

is a straight vertical line (parallel to the y-axis, going through x=6 on the x-axis).

it's slope is therefore undefined (infinite). every possible y value (from -infinity to +infinity) is associated with this one x value (6).

Answer:

270 per year so 6 years is 1620 and add that with 6000=7620

The formula that represent the linear relationship between the cost and the sheets is y = 50/3x + 50/3

An equation is the equality between two algebraic expressions, which have at least one unknown or variable.

Analyzing the coordinates we have:

(35, 600) and (47, 800)

The linear formula is:

Slope (m) = (y2 - y1)  / (x2 - x1)

m = (800 - 600) / (47 - 35)

m = 200 / 12

Simplifying:

m = 100 / 6

m = 50/3

Taking the fist coordinate (35, 600) we get:

y - y1 = m(x - x1)

y - 600 = 50/3 (x - 35)

y - 600 = 50/3x - 1750/3

y = 50/3x - 1750/3 + 600

y = 50/3x + 50/3

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Correctly written question:

A printing firm charges $35 for printing 600 sheets of headed notepaper and $47 for printing 800 sheets. Find the formula assuming the relationship is linear

A total number of 59.6001 tiles (approximately 60 tiles) are needed to complete the tiling for the kitchen and bathroom.

To calculate the total area that needs to be tiled, we'll start by converting the given dimensions from millimeters to meters:

Bathroom Inner Dimensions:

Length = 6030 mm = 6.03 m

Width = 5130 mm = 5.13 m

Bathroom Outer Dimensions (including bedroom areas):

Length = 12330 mm = 12.33 m

Width = 4680 mm = 4.68 m

Kitchen Dimensions:

Length = 6030 mm = 6.03 m

Width = 5130 mm = 5.13 m

Total area to be tiled in the bathroom (excluding the bath area):

Area = Length x Width = 6.03 m x (5.13 m - 0.86 m) = 6.03 m x 4.27 m = 25.7701 m²

Total area to be tiled in the kitchen:

Area = Length x Width = 6.03 m x 5.13 m = 30.9919 m²

Total area to be tiled (bathroom + kitchen):

Total Area = 25.7701 m² + 30.9919 m² = 56.762 m²

To account for breakages, we need to purchase 5% more tiles. So, the total number of tiles needed is:

Total Number of Tiles = Total Area x 1.05 (to account for 5% extra)

Total Number of Tiles = 56.762 m² x 1.05 = 59.6001 tiles

The building manager stated that 150 tiles are needed. Comparing this with our calculation:

150 tiles < 59.6001 tiles

Therefore, the statement made by the building manager is not valid. According to our calculations, a total of 59.6001 tiles (approximately 60 tiles) are needed to complete the tiling for the kitchen and bathroom.

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Based on the results of the linearhypothesis function, we can conclude whether the hypothesis in part (b) is supported or not.

Linear hypothesis is a method of testing statistical hypotheses by estimating the parameters of a linear equation. This method of testing hypotheses involves estimating the parameters of a linear equation using a sample of data to determine if the parameters differ significantly from zero.

We can estimate the given model using the data in vote1. To do this, we will fit a linear regression model with the two independent variables (a's expenditures and b's expenditures) and the dependent variable (outcome). We can then use the model to determine whether a's expenditures have an effect on the outcome. We can do this by testing whether the coefficient for a's expenditures is statistically significant. If the coefficient is not statistically significant, then this means that a's expenditures do not have an effect on the outcome. We can also use the model to determine whether b's expenditures have an effect on the outcome. We can do this by testing whether the coefficient for b's expenditures is statistically significant. If the coefficient is not statistically significant, then this means that b's expenditures do not have an effect on the outcome. These results can be used to test the hypothesis in part (b). We can use the linearhypothesis function to test the hypothesis at a 5% significance level. If the test is found to be statistically significant, then this means that the hypothesis is supported. If the test is not statistically significant, then this means that the hypothesis is not supported.  Based on the results of the linearhypothesis function, we can conclude whether the hypothesis in part (b) is supported or not.

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a. The three statistics that measure central location are:

b. The mean tells us the average number of miles jogged by the sample of 12 joggers last week. Median tells us the midpoint of the data. The mode give us insight into what distance is most frequently jogged by the sample

a. Mean: average of the data = (5.5 + 7.2 + 1.6 + 22.0 + 8.7 + 2.8 + 5.3 + 3.4 + 12.5 + 18.6 + 8.3 + 6.6) / 12 = 8.825 miles.

Median: middle value of the data when arranged in order = 7.95 miles.

Mode: most common value in the data set = there is no mode since no value is repeated.

b. The mean shows us how many miles on average the sample of 12 joggers covered last week. The median provides the data's midpoint, which is helpful when the mean may be impacted by extreme numbers. When it is present, the mode can help us understand what distance the sample covers most frequently. Since there is no mode in this instance, this number is useless.

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Answer:

EQUATION: c = 2.50m + 3

Step-by-step explanation:

you know the equation is C = 2.50m + 3 because if you look at the sentence and pick it apart to better understand it you'll see in the first sentence that 3 PLUS 2.50 PER MILE. your key words are of course plus and per mile. So, in conclusion you say for every mile you have to pay 2.50 but they don't give you the number for how many miles you'd drive so automatically it's your missing value.

Answer:

Length = 36

Width = 52

Step-by-step explanation:

Area of rectangle = Length * width

Length = L ; Width = W

Area (A) = 1872 ft²

Ratio L:W = 9:13

Hence,

1872 = lw - - - (1)

l/w = 9/13 - - - (2)

From (2)

13l = 9w

l = (9/13)w - - (3)

Put (3) into (1)

1872 = (9/13)w * w

1872 = 9/13 w²

24336 = 9w²

24336 / 9 = w²

2704 = w²

w = 52

If w = 52

1872 = 52 * l

l = 1872 / 52

l = 36

Length = 36

Width = 52

This value is approximate because pi = 3.14 is approximate

===========================================================

Work Shown:

r = 4 = radius

pi = 3.14 approximately

C = circumference

C = 2*pi*r

C = 2*3.14*4

C = 25.12

The circumference is approximately 25.12 meters.

Side note: The circumference is the same as the perimeter of a circle.

Each time X increases, there is a perfectly predictable increase in Y  is indicated by a Pearson correlation of r= +1.00 between X and Y

A Pearson correlation coefficient of +1.00 indicates a perfect positive linear relationship between the variables X and Y. It means that as X increases, Y increases in a perfectly predictable manner. The correlation coefficient of +1.00 indicates a strong and direct relationship between the two variables, where the values of Y can be precisely determined based on the values of X.

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Answer

Explanation

The perimeter of a figure

Answer:

0.76

Step-by-step explanation:

Hundredth is just the 2nd decimal point

The 8 measures that can be used to calculate the distance across a circle through its center is known as the diameter.

The 8 measures include diameter, radius, chord, tangent, secant, circumference, arc length, and central angle. The diameter is the longest measure and extends from one side of the circle through its center to the opposite side. The radius is half the length of the diameter and extends from the center to the circumference.

A chord is a straight line segment that connects two points on the circumference. A tangent is a straight line that touches the circumference at only one point. A secant is a line that intersects the circumference at two points.

The circumference is the distance around the circle, while the arc length is the distance along a portion of the circumference. A central angle is an angle whose vertex is at the center of the circle, and its rays extend to the circumference.

These measures are useful in many areas, such as in geometry, trigonometry, and physics. They can be used to calculate various properties of circles, such as the area, perimeter, and volume of circular objects. Understanding these measures is essential in solving problems related to circles and circular motion.

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The time taken by both to mow the lawn is 36 minutes.

This is a question of time and work.

It is given that:-

Time taken by boy to mow the loan = 90 minutes.

Time taken by girl to mow the loan = 60 minutes.

We have to find the time taken by both of them together to mow the lawn.

LCM(60,90) = 180

Let the total work to be done to mow the lawn be 180 units.

Hence,

Efficiency of boy = 180/90 = 2 units

Efficiency of girl = 180/60 = 3 units

Total efficiency = 2 + 3 = 5 units.

Hence, time taken by both of them to mow the lawn = 180/5 = 36 minutes.

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Answer:

em sorry

Step-by-step explanation:

The number selected is the square of a natural number is 1/5.

What is probability and example?

The square number between 1 and 20 = 1,4,9,16

The number of squares between 1 and 20 = 4

The total numbers between 1 and 20= 20

The probability that the number selected is the square of a natural number is given by -

P = Square number /total numbers

P = 4/20 = 1/5

Therefore,  the number selected is the square of a natural number is 1/5.

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At point P (2, π/4, 2), vector A in Cartesian coordinates is A = <1, 2.5, 2>.

To express vector A in Cartesian coordinates, we can use the following conversions between cylindrical and Cartesian coordinates:

x = ρ * cos(θ)

y = ρ * sin(θ)

z = z

Given vector A = cos(θ) - ρ * sin(θ) + 2 * cos(θ) * sin(θ), we can substitute the corresponding expressions for ρ, θ, and z:

x = cos(θ) * cos(θ) - ρ * sin(θ) * sin(θ) + 2 * cos(θ) * sin(θ)

y = cos(θ) * sin(θ) + ρ * cos(θ) * sin(θ) + 2 * cos(θ) * sin(θ)

z = 2

Simplifying these expressions, we get:

x = cos^2(θ) + 2 * cos(θ) * sin(θ) - ρ * sin^2(θ)

y = cos(θ) * sin(θ) + ρ * cos(θ) * sin(θ) + 2 * cos(θ) * sin(θ)

z = 2

Now, we can evaluate vector A at point P (2, π/4, 2):

x = cos^2(π/4) + 2 * cos(π/4) * sin(π/4) - 2 * sin^2(π/4)

y = cos(π/4) * sin(π/4) + 2 * cos(π/4) * sin(π/4) + 2 * cos(π/4) * sin(π/4)

z = 2

Simplifying further, we have:

x = (1/2) + 1 - (1/2) = 1

y = (1/2) + 1 + 1 = 2.5

z = 2

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Answer:

The make geometry easier to understand from a description of their properties and they provide the foundation from which geometry is built. provide clear meaning by identifying classifications and specific characteristics of those figure, process or idea that need to be distinguished and defined.

There are a lot of works in math. The undefined terms makes geometry easier to understand from a description of their properties and provides the foundation from which geometry is built.

Axioms are known to be statements made about a set of  real numbers. Note that real numbers are a vital part of geometry when it comes to taking figures, axioms are very important.

Geometric Mathematical Structures  is known to be a Greek words “geo” that connote  “earth” and “metria” meaning “measurement”.

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Answer:

5n is your answer hope this help

For the given right triangle, L = 66°, LK = 3.56, and the hypotenuse, LM = 8.75.

A right triangle, right-angled triangle, or more formally an orthogonal triangle—previously known as a rectangled triangle—is a triangle with one angle that is a right angle (i.e., a 90-degree angle), meaning that two of its sides are perpendicular. The foundation of trigonometry is the relationship between the sides and other angles of a right triangle.

The hypotenuse is the side that faces the right angle (side c in the figure). Legs are the sides that are next to the right angle (or catheti, singular: cathetus). Side a can be thought of as the side that is adjacent to angle B and opposite to (or opposite) angle A, whereas side b is the side that is adjacent to angle A and opposite to angle B.

Given a right triangle with base = 8 and an angle = 24°

Using angle sum property of triangle

24 + 90 + angle L = 180

L = 66°

Using Sohcahtoa

Tangent: tan(θ) = Opposite / Adjacent

tan(24°) = LK/8

0.445 = LK/8

LH = 8 × 0.445

LK = 3.56

LM = \(\sqrt{MK^2 + LK^2}\)

LM = \(\sqrt{8^2 + 3.56^2}\)

LM = 8.75

Thus, For the given right triangle, L = 66°, LK = 3.56, and the hypotenuse, LM = 8.75.

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