Answer:
C
Step-by-step explanation:
\(11.2y - 7.4y = 141.36 \\ 3.8y = 141.36 \\ y = 37.2\)
the error he made is he added 7.4y+11.2y
Simplify the expression |1/12 - 5/6| - (2/5 + 1/10)
Answer:
x+2
Step-by-step explanation:
x^2+x-7 = x+2
Answer:
The answer is 1/4!!
<3 love
Marsha swam 400 meters in 6
minutes and 12 seconds. Convert that time to minutes.
Answer:
6 minetes? how does this work?
Step-by-step explanation:
Write an equation of the line that passes through the given points in any form.
Answer:
\(y=\frac{2}{3} x+1\)
Step-by-step explanation:
The slope is found by doing the equation \(\frac{rise}{run}\). When looking at the first two points, it's shown that the rise (difference between the two y values) is 2 (since it increased by 2) and the run (difference between the two x values) is 3 (since it increased by 3).
This gives us a slope of \(\frac{2}{3}\).
The +1 is found by looking at the y intercept. The y intercept is found by looking at the y value when x = 0. In this picture, it is clear that it is 1.
The equation you want to use is y = mx + b , where b is the y intercept and m is the slope. Just plug in the numbers and you got your equation!
Rewrite the proportion 7:21 = 3:9 as a proportion using fractions.
A) 7/9 = 3/21
B) 7/21 = 3/9
C) 21/7 = 3/9
D) 7/21 = 9/3
Answer:
7/21=3/9 is the proportion of 7:21=3:9
You walk 46 m to the north, then turn 90
∘
to your right and walk another 45 m. How far are you from where you originally started? 75 m B6 m 79 m 97 m 64 m
After walking 46m to the north, if you turn 90 degrees to your right and walk another 45 m, then the total distance from where you originally started is 79m.
The correct option is C) 79m.How to solve?We can solve this problem using the Pythagoras theorem. When you walk 46 m to the north and then turn 90 degrees to your right and walk 45 m, then you form a right-angled triangle as shown below:So, as per the Pythagoras theorem:
hypotenuse² = opposite side² + adjacent side²
where opposite side = 45mand adjacent side
= 46mhypotenuse² = (45m)² + (46m)²hypotenuse²
= 2025m² + 2116m²hypotenuse²
= 4141m²hypotenuse = √4141m²
hypotenuse = 64mSo,
the total distance from where you originally started is 46m (North) + 45m (East) = 79m.Applying the Pythagoras theorem again to solve the given problem gave us the answer that the total distance from where you originally started is 79m.
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The ratio of inmates to guards at the
asylum is 6:1. If there are 108 guards at
the prison how many inmates are there?
Answer:
648
Step-by-step explanation:
108X1=108 so 108X6=648
NEED IT ASAP!!!!!
3 in.
Robert is computing the volume of this sphere:
Where did Robert make a mistake? Identify Robert's computational error.
3 in.
V= (3)3
= 36
~ 113.10 in.3
Answer:
l think he used three which is the diameter as the radius instead of dividing it by two................
The following is a set of data from a sample of
n=5.
4 −9 −4 4 6
a. Compute the mean, median, and mode.
b. Compute the range, variance, standard deviation, and coefficient of variation.
c. Compute the Z scores. Are there any outliers?
d. Describe the shape of the data set.
a. The mean is -0.6, the median is 4, and there is no mode in the data set.
b. The range is 15, the variance is 35.2, the standard deviation is approximately 5.93, and the coefficient of variation is approximately -0.988.
c. The Z-scores for the data set are -0.68, -1.69, -0.68, -0.68, and 1.37. There are no outliers as none of the Z-scores exceed the threshold of ±3.
d. The shape of the data set is skewed to the left, indicating a negative skewness.
a. To calculate the mean, we sum up all the values and divide by the sample size:
Mean = (4 - 9 - 4 + 4 + 6) / 5 = -0.6
The median is the middle value when the data is arranged in ascending order:
Median = 4
The mode is the value that appears most frequently, but in this data set, none of the values are repeated, so there is no mode.
b. The range is calculated by finding the difference between the maximum and minimum values:
Range = Maximum value - Minimum value = 6 - (-9) = 15
The variance measures the average squared deviation from the mean:
Variance = ((4 - (-0.6))^2 + (-9 - (-0.6))^2 + (-4 - (-0.6))^2 + (4 - (-0.6))^2 + (6 - (-0.6))^2) / (5 - 1) = 35.2
The standard deviation is the square root of the variance:
Standard Deviation ≈ √35.2 ≈ 5.93
The coefficient of variation is the standard deviation divided by the mean, expressed as a percentage:
Coefficient of Variation ≈ (5.93 / 0.6) × 100 ≈ -0.988
c. The Z-score measures how many standard deviations a data point is away from the mean. To calculate the Z-scores, we subtract the mean from each data point and divide by the standard deviation:
Z1 = (4 - (-0.6)) / 5.93 ≈ -0.68
Z2 = (-9 - (-0.6)) / 5.93 ≈ -1.69
Z3 = (-4 - (-0.6)) / 5.93 ≈ -0.68
Z4 = (4 - (-0.6)) / 5.93 ≈ -0.68
Z5 = (6 - (-0.6)) / 5.93 ≈ 1.37
Since none of the Z-scores exceed the threshold of ±3, there are no outliers in the data set.
d. The shape of the data set can be determined by analyzing the skewness. A negative skewness indicates that the data is skewed to the left, which means that the tail of the distribution extends towards the lower values. In this case, the negative skewness suggests that the data set is skewed to the left.
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Brainliest + 20 points goes to whoever answers correctly also if you want more points then answer my others
solve the following inequality
Answer:
6 < u < 8
Step-by-step explanation:
10 > 5u/4 > 15/2
To solve this, we need to isolate the variable u
10(4) > 5u/4(4) > 15/2(4)
40 > 5u > 30
40/5 > 5u/5 > 30/5
8 > u > 6
It probably wants you to write it in order so,
6 < u < 8
Your welcome, and if you have any questions, feel free to comment! :D
\(\\ \rm\hookrightarrow 10>5u/4>15/2\)
Multiply by 5\(\\ \rm\hookrightarrow 40>5u>30\)
Divide 5
\(\\ \rm\hookrightarrow 8>u>6\)
Rationalise the denominator and simplify 6/√3
⇛2√3.
Step-by-step explanation:
Given,
6/√3
The denominator is √3.
We know that
The rationalising factor of √a is √a. To rationalise the denominator of 6√√3, we multiply this by √3/√3.
⇛(6/√3)×(√3/√3)
⇛(6√3)/(√3)²
⇛(6√3)/(√3*3)
⇛(6√3)/3
⇛2√3
Hence, the denominator is rationalised.
I need help asap, please show the work in detail Convert to slope intercept form.3y = 2x +9
To find the slope intercept form, solve the equation for y.
\(\begin{gathered} 3y=2x+9 \\ y=\frac{2x+9}{3} \\ y=\frac{2}{3}x+\frac{9}{3} \\ y=\frac{2}{3}x+3 \end{gathered}\)Solve the equation for x:
\(\begin{gathered} 3y=2x+9 \\ 2x+9=3y \\ 2x=3y-9 \\ x=\frac{3y-9}{2} \\ x=\frac{3}{2}y-\frac{9}{2} \end{gathered}\)given you have declared an array as int ar[45][14][10][10][43][50]; and you are accessing it at ar[29][1][3][0][17][20]; what is the equivalent single dimensional index?
The resulting index value represents the position of the desired element in a hypothetical one-dimensional array formed by collapsing all the dimensions of the original multidimensional array into a single dimension.
The equivalent single-dimensional index for accessing the element ar[29][1][3][0][17][20] in the array int ar[45][14][10][10][43][50] can be calculated as follows:
First, we need to determine the number of elements before the desired element in each dimension. Starting from the outermost dimension:
The size of the first dimension is 45, so there are 45 elements in each block of size 14x10x10x43x50.
The size of the second dimension is 14, so there are 14 elements in each block of size 10x10x43x50.
The size of the third dimension is 10, so there are 10 elements in each block of size 10x43x50.
The size of the fourth dimension is 10, so there are 10 elements in each block of size 43x50.
The size of the fifth dimension is 43, so there are 43 elements in each block of size 50.
The size of the sixth dimension is 50.
To calculate the equivalent single-dimensional index, we multiply the number of elements in each dimension by the respective size of the block and sum them all together. In this case, it would be:
Index = (29 * (14 * 10 * 10 * 43 * 50)) + (1 * (10 * 10 * 43 * 50)) + (3 * (10 * 43 * 50)) + (0 * (43 * 50)) + (17 * 50) + 20
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Please help with problem 10
Answer:
A. 0
Step-by-step explanation:
Slope tells you steepness or flatness of your line.
If you know two points on a line find slope by subtracting the y's and put that on top of a fraction. And subtract the x's and put that on the bottom of the fraction.
Subtract y's: 3 - 3
Put it on top: 0/...
Subtract x's: 5 - -4
same as 5+4
Put that on the bottom: 0/9
slope, usually called m, is 0/9, which is 0.
Notice if you graph these two points its a hOrizOntal line. HOrizOntal lines have zerO slope.
Henry will buy grass seed for his lawn. Each bag of grass seed covers an area of 925
square feet. Henry's lawn is 128 feet long and 72 feet wide. He estimates that he will
need 8 bags of grass seed. Is this estimate reasonable?
Show all your work!
Henry needs to buy the 9.96 bags of grass seed to cover the lawn area:
What is the definition of the area of a geometric figure?The total space occupied by a flat (2-D) surface or the shape of an object is defined as its area. It is a two-dimensional figure. The area of the shape on the paper is referred to as its Area. Consider your square to be made up of smaller unit squares.
What is an example of a geometrical figure?Geometrical shapes are two-dimensional shapes and closed figures such as circles, squares, rectangles, rhombuses, and so on. The three-dimensional shapes in solid geometry are the cube, cuboid, cone, sphere, and cylinder. All of these shapes can be found in various forms all over the place.
According to the given data:The length of the lawn L = 128.
the width of the lawn B = 72.
bag of grass seed covers an area of 925 ft².
He anticipates that he will require 8 bags of grass seed.
Now first we find the area of the lawn:
area of lawn = L x B
= 128 * 72
= 9,216 ft²
The grass seed required to covers an area of lawn = 9,216 ft²
one bag of grass seed covers an area of 925 ft².
= 9216/925
= 9.96
henry needs to buy the 9.96 bags of grass seed to cover the lawn area:
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at memorial hospital, jamie operates a new state-of-the-art mri scanner that serves approximately 10 patients during an 8-hour shift. patients are scheduled for various lengths of time, depending on the complexity of their scan. the image quality is significantly superior to what it was on previous scanners, but the number of patients served per day remains the same. this situation attests to the fact that
The image quality is significantly superior to what it was on previous scanners, but the number of patients served per day remains the same. this situation attests to the fact that the service sector has seen improvement in quality of service, but productivity remains about the same.
Improvement in quality of service:
Putting the customer first, balancing efficiency and customer satisfaction (experience), and focusing on employee engagement are three key strategies for improving contact center service quality.
Productivity:
Productivity is the efficiency with which goods and services are produced and is represented by a scale. A measure of productivity is often expressed as a ratio of total output to a single input or total input in a production process. Typically the output per unit of input over a period of time. The most common example is a measure of (aggregate) labor productivity, an example of which is GDP per worker. There are various definitions of productivity (including those not defined by the ratio of outputs to inputs), and the choice depends on the purpose of measuring productivity and the availability of data gain. The main reason for differences in different measures of productivity usually has to do with how outputs and inputs are aggregated (directly or indirectly) to obtain such relative measures of productivity doing conduct.
Importance of Productivity:
Productivity gains are defined as the process of getting more out of every hour of work. Improving productivity can take many forms, including: Capital, Investments in equipment, software, infrastructure, machinery, etc. equate to labor. Productivity is important for individuals (workers and consumers), business leaders, and analysts(such as policy makers and government statisticians).
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a decimal that stops is which type of number A. rational B. irrational C.None of these
the answer is A. rational
Answer:
The answer would be A:Rational
WHAT IS 5.005 AS A MIX NUMBER!!! I will give you 100 points
Step-by-step explanation:
it would be like 500.5% or 1001/200
Express 1/10 cm as a fraction of 3 metres
Answer:
1/3000
Step-by-step explanation:
3 meters to centimeters:
3 × 100 = 300
= 1/10 ÷ 300
= 1/10/300
= 1/(10×300)
= 1/3000
solve for x
2x×7÷2=8
Answer:
x=8/7
2x times 7 divided by 2 = 8
solve for x
Step-by-step explanation:
2x ×7/2 =8
2x =8×2/7
x=8×2/2×7
x=8/7 or 1⅐.
hope this helps you.
T/F Solution that can be analytically obtained but is not an actual answer to the equation often due to restrictions in the type of function such as a negative in the log
T/F Solution that can be analytically obtained but is not an actual answer to the equation often due to restrictions in the type of function such as a negative in the log
This statement is true.
Because, Sometimes, when solving an equation using analytical methods, we may arrive at a solution that is mathematically correct but is not a valid answer due to the restrictions in the type of function used.
For example, if a negative value appears in the logarithmic function, the solution may not be valid because the logarithmic function is only defined for positive values.
In such cases, we need to go back and recheck our work and take into account the restrictions of the function to arrive at a valid solution.
Sometimes when solving an equation analytically, the resulting solution may not be a valid answer due to restrictions in the domain of the function.
For example, if we solve an equation involving a logarithmic function, we may end up with a negative value inside the logarithm, which is not defined for real numbers. In such cases, the solution obtained analytically is not a valid answer to the equation.
Another example is when solving for the roots of a quadratic equation using the quadratic formula, we may obtain complex solutions even though we are only interested in real solutions.
Thus, it is important to always check the solutions obtained to ensure that they satisfy any domain or range restrictions of the functions involved in the equation.
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Earlier this year, an amateur musician uploaded a video of one of her performances onto the internet. Today, she checked the video's view history and found that the video has accumulated 300 total views since she uploaded it and that the total number of views increases by 20% each week. If w is the number of weeks after today, which equation can be used to find when the video will have 1,075 total views? A. B. C. D
Option B : The equation that can be used to find when the video will have 1,075 total views is 300 ×\(1.20^(w-1)\) = 1,075, and the solution is approximately 6.012 weeks.
Let's start by finding the number of views after w weeks. Since the total number of views increases by 20% each week, the number of views after w weeks can be calculated using the formula:
number of views after w weeks = 300 ×\((1 + 0.20)^w\)
number of views after w weeks = 300 × \(1.20^w\)
Now we can set up an equation to find the value of w when the number of views reaches 1,075:
300 × \(1.20^w\) = 1,075
Dividing both sides by 300, we get:
\(1.20^w\) = 3.583333...
log(\(1.20^w\)) = log(3.583333...)
Using the logarithmic identity log(\(a^b\)) = b log(a), we can simplify the left-hand side of the equation:
w log(1.20) = log(3.583333...)
Dividing both sides by log(1.20), we get:
w = log(3.583333...) / log(1.20)
w ≈ 6.012 weeks
Therefore, the equation that can be used to find when the video will have 1,075 total views is:
300 × \(1.20^w\) = 1,075
where w is the number of weeks after today, and the value of w is approximately 6.012.
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Earlier this year, an amateur musician uploaded a video of one of her performances onto the internet. Today, she checked the video's view history and found that the video has accumulated 300 total views since she uploaded it and that the total number of views increases by 20% each week. If w is the number of weeks after today, which equation can be used to find when the video will have 1,075 total views?
A. 300 × \(1.20^w\) = 1,075
B. 300 × \(1.20^(w-1)\) = 1,075
C. 300 × \(1.20^(w+1)\) = 1,075
D. 1,075 × \(1.20^w\) = 300
beth is a member of the school swim team, and she specializes in distance events. today at practice, she plans to swim for 20 minutes at a constant speed of 75 meters per minute. the function d(m) represents the total distance beth has swum, in meters, during m minutes of practicing. what is the range of d(m)?
Answer:
d(m) can range up to 1500 meters
Step-by-step explanation:
multiply 20 by 75 since she will be swimming at a constant speed of 75 for 20 minutes
Just answer with the value to put in the box thanks !
Answer:
x = 10.8
Step-by-step explanation:
9 ÷ x = x ÷ (9 + 4)
9 × (9 + 4) = x × x
9 × 13 = x²
117 = x²
x = 10.81665383
What are equivalent equations? How do you find them? Write a few sentences describing them
Answer: Equivalent equations are equations with identical solutions. You can find them by simply simplifying an equation.
EXAMPLE:
1 + 2 + 3 = 5x
An equivalent equation would be 3 + 3 = 5x
Nina's grades could be better. She gets about five hours of sleep every weeknight and ten hours per night on weekends. How much sleep should she get to better concentrate on schoolwork? five to six hours every night nine to ten hours every night a total of forty hours a week a minimum of eighty hours a week Save and Exit Next Mark this and return
Answer:
The correct option is;
A total of forty hours a week
Step-by-step explanation:
The given information in the question are;
The number of hours of sleep Nina gets during weeknights = five hours
The number of hours of sleep Nina gets per night on weekends = ten hours
The number of days in a week = 5 days
The number of days in a weekend = 2 days
Therefore;
The number of hours of sleep Nina gets per week = 5 days × 5 hours/day + 2 days × 10 hours/day
∴ The number of hours of sleep Nina gets per week = 25 hours + 20 hours = 45 hours
The number of hours of sleep Nina gets per week = 45 hours
To better concentrate on schoolwork, Nina could get a total of forty hours a week of sleep a week to increase the number of hours she spends weekly on her schoolwork by up to 5 hours (45 hours - 40 hours).
Answer:
nine to ten hours every night hope o helped bbbbbbbbbbbbbbbbbbbbyyyyyyyyyyyyeeeeeeeee
Step-by-step explanation:
Write the expression in standard form: 36p / 6p*
42p
6p
6
42
Answer:
\(Expression = 6\)
Step-by-step explanation:
Given
\(\frac{36p}{6p}\)
Required
Express in standard form
\(Expression = \frac{36p}{6p}\)
Divide both sides of the fraction by p
\(Expression = \frac{36}{6}\)
Divide both sides of the fraction by 6
\(Expression = \frac{6}{1}\)
\(Expression = 6\)
Halla el punto medio del segmento de extremos P (-2,1) y Q (4-7)
The midpoint of the line segment with endpoints P(-2, 1) and Q(4, -7) is M(1, -3).
To find the midpoint of a line segment, we can use the midpoint formula. The formula states that the midpoint (M) of a line segment with endpoints (x₁, y₁) and (x₂, y₂) can be calculated as follows:
M = ((x₁ + x₂) / 2, (y₁ + y₂) / 2)
Using the given endpoints P(-2, 1) and Q(4, -7), we can substitute the values into the formula to find the midpoint.
For the x-coordinate of the midpoint:
x₁ = -2
x₂ = 4
(x₁ + x₂) / 2 = (-2 + 4) / 2 = 2 / 2 = 1
Therefore, the x-coordinate of the midpoint is 1.
For the y-coordinate of the midpoint:
y₁ = 1
y₂ = -7
(y₁ + y₂) / 2 = (1 + (-7)) / 2 = -6 / 2 = -3
Hence, the y-coordinate of the midpoint is -3.
Combining the x-coordinate and y-coordinate, we have the coordinates of the midpoint M(1, -3).
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Complete Question:
Find the midpoint of the endpoint segment P (-2,1) and Q (4-7)
What must be done to categorical variables in order to use them in a regression analysis?
Choose one answer.
a. categorical coding
b. nothing
c. problem coding
d. dummy coding
d. Dummy coding. Categorical variables need to be converted into numerical variables to be used in regression analysis. Dummy coding involves creating binary variables for each category of the categorical variable.
For example, if the categorical variable is "color" with categories "red," "green," and "blue," dummy coding would involve creating three binary variables: "red" (0 or 1), "green" (0 or 1), and "blue" (0 or 1). These binary variables can then be used in the regression analysis. In conclusion, to use categorical variables in regression analysis, dummy coding is necessary.
In order to use categorical variables in a regression analysis, they must be converted into numerical values. This process is called dummy coding (also known as one-hot encoding). Dummy coding involves creating new binary variables (0 or 1) for each category of the categorical variable. This allows the regression model to incorporate the categorical data while maintaining its numerical nature.
To use categorical variables in a regression analysis, you must apply dummy coding to convert them into numerical values.
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Which equation best represents a line perpendicular to a line passing through points (-1, 2) and (1,–8)?
O y = -5x - 3
Oy=52 - 2
O y = 5x + 2
O y=-10 - 2
Answer:
y=-5x-3
Step-by-step explanation:
put -1 and 1 in equation and you will get the answer
The equation that best represents a line perpendicular will be y = - 5x - 3. Then the correct option is A.
What is the equation of a perpendicular line?Let the equation of the line be ax + by + c = 0. Then the equation of the perpendicular line that is perpendicular to the line ax + by + c = 0 is given as bx - ay + d = 0
The equation of the line passing through (-1, 2) and (1, -8). Then the equation of the line will be
y + 8 = [(-8 - 2) / (1 + 1)] (x - 1)
y + 8 = -5x + 5
y = - 5x - 3
The equation that best represents a line perpendicular will be y = - 5x - 3. Then the correct option is A.
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