please help me!! math

Step-by-step explanation:

please mark me as brainlest

Answer:

wut

Step-by-step explanation:

Answer:

1. 85 in2

2. 142.5 mm2

3. 110.5 mm2

4. 9 km2

5. 924 mm2

6. 104.5 m2

7. 3,116 ft2

8. 171 m2

9. 78 km2

10. 4,050 ft2

Answer:

-42

Step-by-step explanation:

-6*-7*-1=

a negative times a negative equals a positive. a positive times a negative equals a negative.

Answer:

-42

Step-by-step explanation:

im taking a test

The probability that a randomly selected home in Queens has 4 or more computers is 0.1 or 10%. The correct answer is (b) 0.10.

The given probability distribution table shows the probabilities of having 1, 2, or 3 computers in a randomly selected home in Queens. However, the probability of having 4 or more computers is not given in the table.

To find the probability of having 4 or more computers in a randomly selected home, we can use the complement rule. The complement rule states that the probability of an event happening is equal to 1 minus the probability of the event not happening. In this case, the event we are interested in is having 4 or more computers in a home, and the complement of this event is having 1, 2, or 3 computers in a home.

So, the probability of having 4 or more computers in a randomly selected home in Queens can be calculated as:

P(4 or more) = 1 - P(1 or 2 or 3)

P(1 or 2 or 3) = P(1) + P(2) + P(3) = 0.4 + 0.3 + 0.2 = 0.9

P(4 or more) = 1 - 0.9 = 0.1

Therefore, the probability that a randomly selected home in Queens has 4 or more computers is 0.1 or 10%. The correct answer is (b) 0.10.

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Answer:

0.0006 or 1/1671

I hope it helps.

Answer:

Step-by-step explanation:

Answer:

r = 3.6 , a = 2

Step-by-step explanation:

given that r is inversely proportional to a then the equation relating them is

r = \(\frac{k}{a}\) ← k is the constant of proportion

to find k use the condition when r = 12 , a = 1.5

12 = \(\frac{k}{1.5}\) ( multiply both sides by 1.5 )

18 = k

r = \(\frac{18}{a}\) ← equation of proportion

when a = 5 , then

r = \(\frac{18}{5}\) = 3.6

when r = 9 , then

9 = \(\frac{18}{a}\) ( multiply both sides by a )

9a = 18 ( divide both sides by 9 )

a = 2

Answer:

24

Step-by-step explanation:

trudt

Answer:

Answer is 18 degrees.

Step-by-step explanation:

Answer:

see below

Step-by-step explanation:

(-3) ^2

(-3)*(-3)

A negative times a negative

9

If the problem is

- (3) ^2

- (3*3)

- 9

Answer:

71/2 just

Step-by-step explanation:

just like that

ANSWER

Step-by-step explanation:

if x= 6 and y= -4, evaluate: 3x + x/y - y^2

we will just substitute for the values

3(6) + 6/-4 - (-4)²

=18 + 6/-4 - (16)

=18 + 6/-4 - 16

L.C.M=-4

= -72+6-(64)/-4

= -72-64+6/-4

=-136+6/-4

= -130/-4

=32.5 or 32 2/5

I hope I helped

The Area of given shape is 170 square inches. The shape is combination of two rectangle.

A shape that is made by combination of two or more basic shape is termed as composite shape. As example the shape in the figure is a composite shape of two rectangle.

we need to calculate the area of each shape seperately then the two result is added or subtracted depending on the position of those shape.

In this figure, there are two rectangles, one has 11 in length and 10 in width, the other has 15 in length and 4 in width.

the area of each rectangle is = 11x10 =110 in²

and 15x4 = 60 in²

total area of shape is the sum of two shape= (110+60) in² = 170 in²

hence, the area is 170 square inches.

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Carolyn's garden is in the shape of a parallelogram with a base of 3x^2 + 4x + 5 and a height of 48 - 9. The area of her garden can be calculated by multiplying the base and the height.



To determine the area of Carolyn's garden, we need to use the formula for the area of a parallelogram, which is given by the product of the base and the height. The base of the parallelogram is represented by the expression 3x^2 + 4x + 5, while the height is represented by the expression 48 - 9.

To find the area, we multiply the base and the height:

Area = (3x^2 + 4x + 5) * (48 - 9)

To simplify the expression, we can distribute the values within the parentheses:

Area = 3x^2 * 48 + 3x^2 * (-9) + 4x * 48 + 4x * (-9) + 5 * 48 + 5 * (-9)

Simplifying further, we have:

Area = 144x^2 - 27x^2 + 192x - 36x + 240 - 45

Combining like terms, we get:

Area = 117x^2 + 156x + 195

Therefore, the area of Carolyn's garden is given by the expression 117x^2 + 156x + 195.

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Answer:

9 feets

Step-by-step explanation:

From the question, we have our scale factor as:

4:9 = 4/9

Smaller circle /Bigger circle = 4/9

A circle has a radius of 4 feet. What is the radius of a bigger circle?

Let the radius of the bigger circle = x

This is calculated as:

4/9 = 4/x

Cross Multiply

4x = 9 × 4

x = 36/4

x = 9 feet

Therefore, the radius of the bigger circle is 9 feet

To find a point along a line a certain distance away from another point, you can use the concept of vectors and parametric equations. By determining the direction vector of the line and normalizing it, you can scale it by the desired distance and add it to the coordinates of the starting point to obtain the coordinates of the desired point.

To find a point along a line a certain distance away from another point, you can follow these steps. First, determine the direction vector of the line by subtracting the coordinates of the starting point from the coordinates of the ending point. Normalize this vector by dividing each of its components by its magnitude, ensuring it has a length of 1.

Next, scale the normalized direction vector by the desired distance. Multiply each component of the normalized direction vector by the distance you want to move along the line. This will give you a new vector that points in the direction of the line and has a magnitude equal to the desired distance.

Finally, add the components of the scaled vector to the coordinates of the starting point. This will give you the coordinates of the desired point along the line, a certain distance away from the starting point. By following these steps, you can find a point on a line at a specific distance from another point.

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There were 128 children and 155 adults.

Let us first set up our system by assigning x and y to mean something. Let x = the number of children and y = the number of adults.

First equation: Children cost $1.50 and Adults cost $4.00. In order to find the amount of money a group of children will cost, we multiply the number of children, x, by 1.5.

This is represented by 1.5x. For adults, who cost 4 dollars to enter, we will use 4y. The total amount of money made on the given day was $632. To get this amount, we must add 1.5x and 4y.

1.5x+4y=632 --------(1)

Second equation: Total amount of people on the given day is 238. To get this number, we must add together x and y, or the number of children and adults.

x + y = 238-----(2)

System of equations:

1.5x+4y=632

x+y = 238

Let's use the substitution of the x variable to solve the system.

x+y=238.

y=238-x

Substitute y = 238 - x into the first equation.

1.5x + 4 (238 - x) =632

1.5x + 952 - 4x = 632  

952- 2.5x = 632

-2.5x = -320

x = 128

Substitute x =128 back into y = 238 - x

y = 283-128

y=155

There were 128 children and 155 adults.

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Answer:

-28

Step-by-step explanation:

We have the equation \(5x-3y\) and are given that \(x=-2, y=6\).  To solve this equation, we simply replace the variables with their real value.  In action, this would be \(5(-2)-3(6)=-10-18=-28\).

Answer:

21

Step-by-step explanation:

Answer:

250

Step-by-step explanation: because 5*50=250

Answer:

250 miles

Step-by-step explanation:

3) The extra number of feet of coiled tubing Tom needs to run into the well is: 5445 ft

4) The total length of coiled tubing Brendan ran in the wellbore is: 994 ft

5) The distance that the coiled tubing has reached after the first four hours is:  a depth of 16,776 feet in the well.

3) Initial amount of coiled tubing he had after 81 minutes = 9,153 feet

Amount of tubing after another 10 minutes = 10,283 feet

The total tubing required = 15,728 feet.

The extra number of feet of coiled tubing Tom needs to run into the well is: Needed tubing length - Current tubing length

15,728 feet - 10,283 feet = 5,445 feet

4) Speed at which Brendan is running coiled tubing = 99.4 feet per minute.

Coiled tubing inside the wellbore after 8 minutes is: 795.2 feet

Coiled tubing inside the wellbore after 2 more minutes is: 198.8 feet

The total length of coiled tubing Brendan ran in the wellbore is:

Total length = Initial length + Additional length

Total length =  795.2 feet + 198.8 feet

Total Length = 994 feet

5) Rate at which coiled tubing is being run into a 22,000-foot wellbore = 69.9 feet per minute. After the first four hours, we need to determine how deep the coiled tubing has reached.

A time of 4 hours is same as 240 minutes

Thus, the distance covered in the first four hours is:

Distance = Rate * Time

Distance = 69.9 feet/minute * 240 minutes

Distance = 16,776 feet

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These instructions provide a general framework for addressing your questions. If you can provide the specific data files or any additional information, I can assist you further in performing the analyses.

To address your questions, I will need access to the specific data files mentioned in order to perform the requested analyses. As an AI text-based model, I don't have direct access to external files or the capability to process and display visual plots. However, I can still guide you through the general steps and concepts involved in solving these problems. Let's break it down:

a. Constructing a histogram:

To construct a histogram of the shopping times, you need to determine appropriate intervals or bins to group the data. Once you have chosen the bins, count the number of observations falling within each bin and create bars to represent the frequencies. The width of each bar should be proportional to the frequency.

b. Constructing a stem-and-leaf display:

A stem-and-leaf display is a way to organize and present numerical data. The stems represent the leading digits of the data values, while the leaves represent the trailing digits. This display helps to visualize the distribution and order of the data.

c. Commenting on the plots:

After constructing the histogram and stem-and-leaf display, you can analyze the patterns and characteristics of the data. Look for measures of central tendency (such as the mean or median) and measures of variability (such as the range or standard deviation) to gain insights into the shopping times.

Q2. Constructing time-series plots:

To construct time-series plots, you need to plot the values of the index against time. The index values are on the vertical axis, while the time is on the horizontal axis. Use the given vertical axis ranges to ensure the plot is properly scaled.

c. Commenting on the time-series plots:

After constructing the time-series plots, observe the trends, patterns, and fluctuations in the index values over time. Look for any significant changes, seasonal patterns, or irregularities that may help in understanding the behavior of the exchange rate.

Q3. Cross table and row percentages:

To create a cross table, you'll need the data file Stordata. The table should have days of the week as rows and the four sales quartile intervals as columns. Count the number of sales falling within each combination of day and quartile, and fill in the cells of the table accordingly.

a. Computing row percentages:

Row percentages are calculated by dividing each cell value by the corresponding row's total and multiplying by 100. This provides the percentage distribution of sales quartiles within each day of the week.

b. Major differences in sales level:

Compare the row percentages across different days of the week. Look for substantial differences in the distribution of sales quartiles. Identify the days that have notably higher or lower percentages in specific quartiles compared to others.

c. Interpretation:

Based on the row percentages, you can infer the variations in sales levels by day of the week. For example, if one day consistently has a higher percentage in the top sales quartile, it suggests that day tends to generate higher revenue. Conversely, if a day has a higher percentage in the lower sales quartiles, it implies relatively lower sales performance.

Remember, these instructions provide a general framework for addressing your questions. If you can provide the specific data files or any additional information, I can assist you further in performing the analyses and interpretation.

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(a) The graph of the linear functions is as attached.

(b) The equation of the linear function in slope-intercept form is; y = x

(c) The equation of the transformed function in slope-intercept form is;

y = x + 2 and y = x - 3

Functions are defined as the relationship between sets of values. For example, in the function; y = f(x), for every value of x there exists a set of y values.

x is the independent variable.

y is the dependent variable.

If the linear function is; y = x,

The equation of the transformation in slope-intercept form is given as;

For translation of 2 units up, we have;

y = x + 2

For a translation of 3 units down, we have;

y = x - 3

Thus, the required graph has been attached and the solution is determined.

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Answer:

1/2

Step-by-step explanation:

- find the least common denominatir for the two. (12)

-multiply 4 and 3

-multiply 6 and 2

- Add 1 and 5

-Keep the denominator.

-simplify if needed

Answer:

Step-by-step explanation:

answer 1 1/12 hours

It would take Jimbo 24 minutes to solve a 3-variable substitution problem alone.

Let's assume that Jimbo takes x minutes to solve a 3-variable substitution problem alone.

We know that Jimmy takes 8 minutes to solve the same problem alone, so his work rate is 1/8 of the problem solved per minute.

Together, Jimbo and Jim Bob can solve the same problem in 6 minutes. This means that their combined work rate is 1/6 of the problem solved per minute.

We can set up the following equation to represent the work rates:

1/8 + 1/x = 1/6

To solve for x, we can multiply both sides of the equation by 24x:

3x + 24 = 4x

x = 24

Therefore, it would take Jimbo 24 minutes to solve a 3-variable substitution problem alone.

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Answer:

48%

Step-by-step explanation:

there are 250 cars in total 50+70 is 120 (the red  or blue cars)

so there are 120 "yes" out of 250 total of 120 divided by 250 equal 0.48 or 48%

Answer:

5000

Step-by-step explanation:

Given data

25% wore red-T shirt

75% did not wear red T-shirt= 3750

Let the total spectator be represented by 100%

Let the total be x

75/100*x= 3750

0.75x= 3750

x= 3750/0.75

x= 5000

Hence thte total number of spectators is 5000

The true statement is: "Octave is the name of a particular interval size."

In music theory, an octave refers to the interval between two pitches where the higher pitch has a frequency that is exactly twice that of the lower pitch. It represents a doubling or halving of the frequency. For example, if we start on the note A and move up to the next A, we have traversed an octave.

An interval, on the other hand, refers to the distance between two pitches. It is the numerical representation of the difference in pitch between two notes.

The statement mentioning "interval as the name of a particular octave size" is incorrect because the octave is a specific interval size, not the other way around.

The statement suggesting that "the fifth is a kind of octave" is also incorrect. The fifth is a specific interval that represents the distance of five diatonic scale steps between two pitches.

Lastly, the statement that "a synonym for distance is octave" is not true. While an octave represents a specific interval size, the term "distance" is a more general term that can refer to the measurement between any two pitches, regardless of the specific interval size.

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The original price of the tech stock would be = $358.38

The decrease in price of the stock tech in first week = 22%

The decrease in the second week = 15%

The total decrease = 22+15 = 37%

If 37% of the price after its decrease = $132.60 then it's 100% would = X

That is 37% = $132.60

100% = X

Make X the subject of formula;

X = 100 × $132.60/ 37

= 13260/37

= $358.38

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Answer:

La ecuación punto-pendiente de la recta que pasa por los puntos P1 (1,6) y P2 (4,0) es:

Primero, encontramos la pendiente de la recta utilizando la fórmula:

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

m = (0 - 6) / (4 - 1) = -2

Luego, utilizamos la fórmula punto-pendiente de la recta:

y - y1 = m(x - x1)

y - 6 = -2(x - 1)

y - 6 = -2x + 2

y = -2x + 8

Por lo tanto, la ecuación punto-pendiente de la recta que pasa por los puntos P1 (1,6) y P2 (4,0) es y = -2x + 8.

Step-by-step explanation: