A scale drawing of a rectangular park had a scale of 1 cm = 60 m
What is the actual perimeter of the park in meters?

The expression will be;

n = 8 x 5 / 4.

The correct option is A.

Algebraic expressions shows us how to express an unknown value using letters such as t, a, y, etc. These letters are called here as variables. An algebraic expression can be a combination of both variables and constants. Any value that is placed before and multiplied by a variable is a coefficient.

Number of friends = 4

Bags sold = 8

Amount sold = $5

The expression will be;

n = (8 x 5) / 4

to find the amount sold for each of the friends.

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Answer: 7/4

Step-by-step explanation:

The formula for slope is change in y/change in x.

So we substitute in the coordinates: -3-4/2-6

We can then simplify to -7/-4, or 7/4.

Answer: 7/4

Step-by-step explanation:

4-(-3)/6-2 = 7/4

the rate of change of height at h = 15cm, 0. 0159 cm/s

What is Rate?

A rate in arithmetic is a ratio that contrasts two separate values with various unit systems. For instance, if John types 50 words per minute, that means he types 50 words per minute. We are dealing with a rate because the word "per" is there. The symbol "/" can be used in place of the word "per" in issues.

When two or more similar amounts or numbers are being compared using the same units, a ratio is utilized. When referring to the ratio of one quantity "to" the second quantity in spoken language, it is frequently written with a colon.

Beads are dropped to create a conical pile such that the ratio of its radius to the height of the pile is constant at 2:3.

Volume is increasing at a rate of 5 cm3/s.

The volume of a Cone: 1/3 pi r^2 h

given r/h =2/3

V =0. 0159 cm/s

Hence the rate of change of height at h = 15cm, 0. 0159 cm/s

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Answer:

Step-by-step explanation:

Yes, it is correct for Austin to be excited about the extra money he will make in interest. Interest is a common form of compensation for loaning money to another person, and it is generally expected to be paid back along with the principal amount. In this case, Austin will earn 4% interest on the $20 loan over the course of 3 months, which works out to be a total of $0.80. This is a relatively small amount, but it is still money that Austin would not have had if not for the loan. Therefore, it is reasonable for Austin to be excited about the opportunity to make a little extra money.

A right triangle with sides of 6, 10, and 8 cm can be built.

The sides of a triangle are 6 cm, 10 cm, and 8 cm in length.

The Pythagorean Theorem states that The sum of the squares representing the base and height equals the square of the hypotenuse.

[tex](Hypotenuse)^{2}+(Base)^{2}= (Altitude)^{2}[/tex]

                       [tex](6)^{2}+(8)^{2}= (10)^{2}[/tex]

                           36 + 48 = 100

                                  100 = 100

The sides offered satisfy the specifications for a right triangle.

Given that it satisfies the Pythagorean theorem, a right triangle with sides of 6, 10, and 8 cm can be built.

Hence, a triangle can be formed with sides of 6cm, 8cm, and 10cm in length and that would be a right angled triangle.

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Correct answers are - A, B, D, F, G.The volume of oblique cone is same as normal cone and volume of oblique cylinder is same as normal cylinder due to Cavalier's principle.

Cavalieri's principle is a method for determining the volume of an object by comparing it to the volume of another object of known volume. It was introduced by the Italian mathematician Bonaventura Cavalieri in the early 17th century. The principle states that if two solids have the same height and the same cross-sectional area at every height, then the two solids have the same volume.

The principle is based on the idea of slicing the solids into thin slices and comparing the areas of the cross-sections of the slices. If the cross-sectional areas are the same at every height, then the solids have the same volume.

Cavalieri's principle was one of the early precursors to the development of calculus and the concept of the definite integral. It is also a powerful tool in geometry and is used in many problems involving the calculation of volumes of irregular shapes.

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The complete question is as follows:

Answer: [tex]18p^{4}[/tex]

Step-by-step explanation:

I wrote the steps in the image

The events A and B are mutually exclusive, that is they are independent. Hence, option a and option c are correct.

In probability theory, if two events don't happen at the same time, they are mutually exclusive or disjoint. The outcomes of a single coin flip, which can result in either heads or tails but not both, are an obvious example.

Given that A and B are mutually exclusive events.

For mutually exclusive events the probability of event A occurring or event B occurring is summation of the probability of the individual event.

Both the events are independent.

Hence, option a and option c are independent.

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Answer:

let the 2 unknown numbers be 'x' and 'y'

given: x+y=15 - equation 1

5x-3y=19 - equation 2

from equation 1 :

x = 15 -y

substitute this in equation 2

5(15-y) -3y = 19

75 - 5y - 3y = 19

75-8y=19

8y=56

y=7(substitute value of y in equation 1)

x+7=15

x=8

hence the two numbers are 8 and 7

Answer:

x = 8

y = 7

Step-by-step explanation:

let's assume the first number as x, and the second number as y

Now, according to the question,

x + y = 15

Moving on to the next statement,

five times the first number = 5x

three times the second number = 3y

Thus,

5x  - 3y = 19

Now that we have two equations, we can either write 'x' in 'y' terms, or y in 'x' terms.

For example, from the first equation:

x + y = 15

y = 15 - x

Now, let's put this value of y into the second equation, i.e.

5x - 3(15 - x) = 19

5x - 45 +3x = 19

8x = 19 + 45

x = 64/8

x = 8

Now, let's put this value of x into the first equation, i.e.

x + y = 15

8 + y = 15

y = 7

In conclusion, the two numbers, x and y, are 8 and 7 respectively

The correct dotplot for the given data is option D, which displays the number of errors for the week for each workstation.

Error in math is any mistake made in the process of solving a mathematical problem or problem-solving process. It could mean a mistake in the calculations, incorrect steps taken, or incorrect assumptions made. It can also include making a wrong interpretation of the problem, or not being able to solve it at all. Errors in math can occur due to a lack of understanding of the concepts, mistakes in calculations, errors in reasoning, or incorrect application of the rules and formulas. Errors can also be made in the process of writing down the equations, or in the process of simplifying the equation.

The graph begins with 0 and goes up to 254201 in intervals of 5. The data points for each work station are marked on the graph, showing the number of errors each work station made. This visual display of data points allows for an easy comparison of the number of errors across all workstations.

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Someone biked 11 time as many miles as someone together they biked a total of 156 miles. 143 miles did they bike.

Miles:

The mile, sometimes called the international mile or statutory mile to distinguish it from others, is an imperial unit in the United Kingdom and a common unit of distance in the United States. Both are based on old English units that are 5,280 British feet or 1,760 yards long. The legal mile was standardized in 1959 by an international agreement between the British Commonwealth and the United States and formally redefined in SI units to be exactly 1,609.344 meters.

With the modifier, the mile is also used to describe or convert a wide range of units derived from or roughly equivalent to the Roman mile, such as the Chinese mile (now exactly 500 m). will be The Romans divided the mile into 5,000 Roman feet, but the growing importance of the furlong in Elizabethan England meant that in 1593 the legal mile equaled eight furlongs, or 5,280 feet. This form of the mile has since spread partially to the successor states of the British Empire, where they continue to use the mile. Most countries have replaced miles with kilometers when converting to the International System of Units (SI), but some countries still use international miles, such as Liberia, the United Kingdom, the United States, and countries with less than one mile. I'm here. Most of them are British or US territories or have close historical ties with the UK or the US.

According to the Question:

Let the distance Karly biked be x.

Then, someone biked 11x.

Now,

x + 11x = 156

x = 156/ 12

  = 13

Therefore,

Someone biked 11 × 13 = 143 miles

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Finding the line that fits a set of data points the best is done using the linear regression approach. We can utilize the following procedures to apply linear regression to find an equation that would most effectively predict a fair home price depending on the square footage of the home:

Step 1 :The square footage of the house should be on the x-axis and the house's price in thousands should be on the y-axis of the graph you create in step one.

Step 2: Using the slope-intercept form (y = mx + b), where m is the slope and b is the y-intercept, determine the equation of the line of best fit.

Step 3 :Find the slope and y-intercept by substituting the comps data into the equation in step three.

Step 4: The line of best fit has the equation y = mx + b, where m is the line's slope and b is its y-intercept.

Step 5: We must use the formula m = (NΣ(xy) - (Σx)(Σy)) / (NΣ(x^2) - (Σx)^2) to determine the slope (m).

Step 6: We must apply the formula b = (y - m(x)) / N to determine the y-intercept (b).

Step 7: Using the information provided in the question, we will determine the slope and y-intercept. m = (3* (108+133+120) - (1400+1700+1500)(3)) / (3 (1400+1700+1500)(2)) = 0.09 b = (108+133+120 -0.09*(1400+1700+1500))/3 = 111.33

   Therefore, y = 0.09x + 111.33 is the equation that would most accurately forecast a reasonable property price based on the home's square footage.

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The equation be 38.67 + 13.6 then we get 52.27.

A different way to represent a fractional value in mathematics is to use decimal notation. It denotes that base-10 fractional representation is being used. It is possible to change fractions into decimals and vice versa.

The same thing applies to decimals: they each represent a portion of a whole number. The distinction is in the notation used to write decimals vs fractions. By using decimal notation, we can graphically express how much of a whole number we are working with.

The decimal point must be moved till it is to the left of the first non-zero number in order to be written in scientific notation. The exponent is the amount of places the decimal point advances since each movement signifies a "power of 10".

Let the equation be 38.67 + 13.6 then we get 52.27.

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The function is decreasing in the interval (-∞,-3/2) and (3/2, ∞) and increasing in the interval (-3/2, 3/2).

What is a function?

A function is a mathematical relation between a set of inputs (often called independent variables, or the domain) and a set of outputs (often called dependent variables, or the range). A function assigns exactly one output for each input. It can be represented by an equation, such as y = f(x), where x is the input and y is the output.

To find the interval(s) in which the function is increasing and decreasing, we can first find the critical points of the function by setting the derivative equal to 0 and solving for x.

The derivative of y = |2x² + x - 6| is not a defined function, it is not differentiable, it is a piece-wise defined function, it has a break at x = -3/2

Hence, the function is decreasing in the interval (-∞,-3/2) and (3/2, ∞) and increasing in the interval (-3/2, 3/2).

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Answer:

250 and 10

Step-by-step explanation:

substitute x = 10 into the expressions

a = [tex]\frac{5x^2}{2}[/tex]

  = [tex]\frac{5(10)^2}{2}[/tex]

  = [tex]\frac{5(100)}{2}[/tex]

  = [tex]\frac{500}{2}[/tex]

  = 250

-----------------------------------------------

b = [tex]\frac{2x^2(x-5)}{10x}[/tex]

  = [tex]\frac{2(10)^2(10-5)}{10(10)}[/tex]

  = [tex]\frac{2(100)(5)}{100}[/tex] ( cancel 100 on numerator and denominator )

  = [tex]\frac{2(5)}{1}[/tex]

  = 10

The binding constraints for the ideal response in a linear programming issue are

5X + 3Y < 30

2X + 5Y < 20

The term "linear programming" (LP), sometimes known as "linear optimization," refers to a technique for determining the optimal result in a mathematical model whose criteria are represented by linear relationships, such as the largest profit or lowest cost.

A specific type of mathematical programming is linear programming (also known as mathematical optimization).

Formally speaking, linear programming is a method for optimizing a linear objective function under the restrictions of linear equality and linear inequality.

Convex polytopes, a set defined as the intersection of a finite number of half spaces, each of which is determined by a linear inequality, make up its viable region.

A real-valued affine (linear) function defined on this polyhedron serves as its goal function.

An algorithm for linear programming determines where on the polytope this function occurs.

Hence, The binding constraints for the ideal response in a linear programming issue are

5X + 3Y < 30

2X + 5Y < 20

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-7.4 degrees celsius is less than the temperatures Susan recorded.

To explain, temperatures are measured on a scale, with 0 degrees celsius being the point at which water freezes and 100 degrees celsius being the point at which water boils. A temperature of -7.4 degrees celsius is therefore less than the recorded temperatures of -7.4 and 1.8 degrees celsius.

The temperature is a measure of the thermal energy of a substance or system, and is typically measured on a scale, such as the Celsius scale or the Fahrenheit scale.

In other words, the number -7.4 is less than 1.8 and -7.4 on the scale of temperature, meaning that -7.4 degrees celsius is less than the temperatures Susan recorded.

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The likelihood of selecting a second ball is 2/8 or 1/4 if that ball is now eliminated.

Probability theory, a subfield of mathematics, gauges the likelihood of an event or a claim being true. An event's probability is a number between 0 and 1, where approximately 0 indicates how unlikely the event is to occur and 1 indicates certainty.  Alternative ways to express probabilities are as percentages from 0% to 100% or from 0 to 1. the percentage of occurrences in a comprehensive set of equally likely outcomes that result in a certain occurrence compared to the total number of outcomes.

given

The ratio of the number of balls of that color to all the balls is the likelihood of selecting a ball from a bag.

In the first case, the likelihood of a red ball is therefore 3/9, or 1/3. The likelihood of selecting a second ball is 2/8 or 1/4 if that ball is now eliminated.

Therefore, the chance of getting a white ball is 1/2*1 plus 1/2*49/99, or roughly 3/4.

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Answer:

56.5 cm

Step-by-step explanation:

Circumfrence= pi× diameter

= 3.14×18 = 56.52 cm

3SF: 56.5 cm

The equation of function after a horizontal translation is y = 2*4ˣ⁺².

Initially, functions represented the idealized relationship between two changing quantities. A planet's position, for instance, depends on time. In the past, the idea was developed with the infinitesimal calculus at the end of the 17th century, and the functions that were taken into consideration until the 19th century were differentiable (that is, they had a high degree of regularity).

The realms of application of the concept of a function were substantially expanded at the conclusion of the 19th century when it was defined in terms of set theory.

An assignment of an element from set Y to each element of set X constitutes a function from set X to set Y. The sets X and Y are collectively referred to as the function's domain and codomain, respectively.

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Rate of the jet in still Air is 716 miles per hour and

wind speed is 80 miles/hour.

The velocity of an item in relation to another observer is known as its relative velocity. It is the pace at which one item's relative location changes in relation to another object over time. When two bodies are travelling in opposing directions, their relative velocity is at its highest. They are approaching one another.

Let ‘X’ be speed of jet and

'Y’ be speed of Wind

Relative velocity when jet travels against wind: X - Y = ( 2544 / 4 ) = 636 miles/hour

Relative velocity when jet travels with wind is: X + Y = ( 3184 / 4 ) = 796 miles/hour

By adding these two equations we will get

2 X = 1432 or X = 716 miles /hour and

or, Y = 796 - 716 = 80 miles/hour

Hence,

Rate of the Jet in still Air is 716 miles per hour and

Wind speed is 80 miles/hour.

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Dalton made 10 number of  decorations. Dalton made 10 decorations using 1/2 of a meter of ribbon, which he cut into equal pieces.

1. Dalton used 1/10 of a meter of ribbon for each decoration.

2. He got this by cutting 1/2 of a meter of ribbon into equal pieces.

3. 1/2 of a meter is equal to 5/10 of a meter.

4. If 1/10 of a meter is used for each decoration, then 5/10 of a meter can make 5 decorations.

5. Therefore, 10 decorations can be made.

Dalton made 10 number of decorations using 1/2 of a meter of ribbon, which he cut into equal pieces.

Dalton made 10 decorations for each of the dancers in his year-end dance performance. He used 1/10 of a meter of ribbon for each decoration which he got by cutting 1/2 of a meter of ribbon into equal pieces. This meant that he was able to get 10 decorations out of the 1/2 of a meter of ribbon, as 1/10 of a meter was used for each decoration. He was able to do this by dividing the 1/2 of a meter of ribbon evenly into 10 pieces.

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hope this helps you understand !!

Answer:

x + 2

Step-by-step explanation:

Ben : x cm

Kieran: (x + 8) cm

Bianca: (x - 2) cm

Mean of their heights = [tex]\frac{Sum of their heights}{Number of people} = \frac{x + (x + 8) + (x - 2)}{3}[/tex]

                                   = [tex]\frac{x + x + 8 + x - 2}{3}[/tex]    (Expand the brackets)

                                   = [tex]\frac{x + x + x + 8 - 2}{3}[/tex]  (Bring all the like terms together)

                      = [tex]\frac{3x + 6}{3}[/tex] (Simplify the two sets of like terms)

                        = [tex]\frac{3(x + 2)}{3}[/tex]  (Extract the common factor '3' in the numerator)

                      = (x + 2) cm  ([tex]\frac{3}{3} = 1[/tex])

The final equation of the line using the point-slope formula is y = (1/5)x + (6/5) = (1/5)x + 1.2.

The point-slope form of a line is given by y - y1 = m(x - x1) where m is the slope of the line and (x1, y1) is a point on the line.

First, we need to find the slope of the line that is perpendicular to 5y = x − 4. A line is perpendicular to another line if the product of their slopes is -1. The slope of 5y = x − 4 is x/5y=-1. Therefore, the slope of the line that is perpendicular to 5y = x − 4 is 1/5

Now we can use the point-slope form of a line with a slope of 1/5 and the point (-2, 1) to find the equation of the line.

y - 1 = (1/5)(x + 2)

y = (1/5)x + (2/5) + 1

y = (1/5)x + (6/5)

To write the equation in slope-intercept form, we need to solve for y:

y = (1/5)x + (6/5) = (1/5)x + 1.2

That's the final equation.

Therefore, The final equation of the line using the point-slope formula is y = (1/5)x + (6/5) = (1/5)x + 1.2.

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Answer:

To find the distance of the car from the foot of the building, you can use the tangent function and the information given:

distance = 24m / tan(40°)

The distance of the car from the foot of the building is approximately 27.4m

Step-by-step explanation:

The mean number of accidents that would be expected to be more than 7 accidents is 0.6554.

By dividing the sum of the given numbers by the entire number of numbers, the mean—the average of the given numbers—is determined.

A statistical measurement known as the Z-score indicates how closely a value relates to the mean of a collection of values. The Z-score is calculated using standard deviations from the mean. When a data point's Z-score is 0, it means that it has the same score as the mean. One standard deviation from the mean would be indicated by a Z-score of 1.0.

Given that mean is 6.4 and the standard deviation is 1.5.

The z score is used to determine the accidents:

z = 7 - 6.4 / 1.5

z = 0.4

Using the table of normal distribution we have, P(x > 7 ) = P(z > 0.4) = 0.6554

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The value here is always 1, and the value should be 0, since it is a positive value for x.

About logarithmic base

A function whose logarithm is the base a of x. The exponential form is used here because it shows the inverse of the exponential function.

So we can conclude that positive values ​​of x here should always have values ​​1 and 0. So the above answer is correct.

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Different types of units are CGS system units, FPS system units, MKS system units and SI units.

The (CGS)centimetre-gram-second system of units is how this is expressed. The metric system employs the centimetre to represent length or distance, the gram as the fundamental unit to represent mass or weight, and the second to represent time. Although there are other units of measurement in the system, they are all derived from just a few of these.

The (FPS)foot-pound-second system of units is what this is in its entire form. In this metric system, the foot serves as the default unit of length, and the pound serves as the default unit of mass and force. Finally, time is represented by the second.

This system's full name is (MKS)meter, kilogram, and second. The measuring of physical quantities is indicated by the usage of this metric system. Here, a meter is used to indicate length and a kilogram to indicate mass. Prior to their redefinition, it was renowned for establishing the foundation for the SI units.

International System of Units(SI) is the lengthier abbreviation for the units. It is the most recent and contemporary variety of metric system in use today. It is frequently utilized as the reference unit of measurement. It primarily includes the following seven units of measurement: second, metre, kilogram, ampere, Kelvin, Mole and candela.

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Answer:

72 inches

Step-by-step explanation:

12 inches : 1 feet that is

[tex] \frac{12(inches)}{1(feet)} [/tex]

then if 6 feet

[tex] \frac{12(inches)}{1(feet)} \times 6(feet) = 72(inches)[/tex]