Answer:
Surface area of cylinder = 2 π r ² +2 π r h
Step-by-step explanation:
Surface area of cylinder =
area of both circle ends + area of curved surface
= 2 π r ² +2 π r h
An artist made a sculpture out of sections of metal pipe and plastic tubing. He used 1/3 yard of metal pipe divided into 4 equal pieces, and 2 yards of plastic tubing divided into 3 equal pieces. What is the ratio of the length of a piece of metal pipe to the length of a piece of plastic tubing?
A. 1 : 12
B. 1 : 8
C. 4 : 3
D. 8 : 1
The ratio of the length of a piece of metal pipe to the length of a piece of plastic tubing is,
⇒ 1 : 8
We have to given that;
He used 1/3 yard of metal pipe divided into 4 equal pieces, and 2 yards of plastic tubing divided into 3 equal pieces.
Hence, Length of piece of metal pipe = 1/4×3 = 1/12
And, length of a piece of plastic tubing is, 2 / 3
So, The ratio of the length of a piece of metal pipe to the length of a piece of plastic tubing is,
⇒ (1/12) : (2/3)
⇒ (1/12) x (3/2)
⇒ 1/8
⇒ 1 : 8
Thus, The ratio of the length of a piece of metal pipe to the length of a piece of plastic tubing is,
⇒ 1 : 8
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is the relationship between the variables in the table a direct variation, an inverse variation, both, or neither? If it is a direct or inverse variation, write a function to model it.
The values of the product and ratio of the corresponding variables in the table indicates that the relationship in neither a direct or inverse variation, and the correct option is therefore;
NeitherWhat is a variation?A variation is the relationship between the values in the set of a variable and the values in the set of other variables.
The table of values indicates that as the value of x increases, the values of y decreases, therefore;
x; 2 5 20 [tex]{}[/tex] 40
y; [tex]{}[/tex] 40 20 5 2
A direct variation is a relationship between x and y in the form;
y ∝ x
y = k × x
y/x = k (A constant)
The ratio of the y- and x-values in the table indicates that we get;
40/2 = 10
20/5 = 4
]5/20 = 1/4
2/40 = 1/20
Therefore, the different ratios of the corresponding x and y values indicates that the relationship is not a direct variation.
An inverse variation between two or more variables can be presented as follows;
y ∝ 1/x
y = k/x
y × k = k
Therefore, the product of the corresponding variables values in table can be presented as follows;
40 × 2 = 80
20 × 5 = 100
5 × 20 = 100
2 × 40 = 80
Therefore, the different values of the product between the corresponding variables indicates that the relationship is not an inverse variation
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stratified random sampling involves: group of answer choices dividing the population into overlapping groups taking a random sampling of a percentage of the pre-chosen groups (usually 10% of total groups) choosing non-overlapping clusters (i.e. streets of a city) and collecting data from all members of the selected cluster none of the above
Stratified random sampling involves dividing the population into non-overlapping groups, called strata, based on specific characteristics or attributes. From each stratum, a random sample is taken, usually based on a predetermined percentage of the total groups.
Stratified random sampling involves dividing the population into overlapping groups, or strata, based on a certain characteristic, such as age or income. From each stratum, a random sample is taken of a pre-determined percentage of individuals. This ensures that the sample is representative of the entire population, as each stratum is proportionately represented in the sample. This method is often used when the population is diverse and there are subgroups that may have different characteristics or opinions. By using stratified random sampling, researchers can ensure that each subgroup is represented in the sample, allowing for more accurate results. This method can be more complex and time-consuming than other sampling methods, but it provides a more accurate representation of the population being studied.
The collected data from each selected group is then combined to form the overall sample, which is representative of the entire population. This method helps ensure that different segments of the population are adequately represented, providing more accurate and reliable results in statistical analysis.
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a population grows according to the logistic model. the r value is 0.018, and the environmental carrying capacity is 2506. write the logistic equation satisfied by the population if n(0)
Since we don't have the initial population size N(0), we'll represent it as a variable. The logistic equation for this population will be: N(t) = 2506 / (1 + (2506 - N0) / (N0 * e^(-0.018 * t))). This equation describes the population growth over time based on the given r value and carrying capacity.
The logistic model is used to describe population growth that is limited by a carrying capacity. In this case, the carrying capacity is given as 2506. The value of r, which represents the maximum growth rate of the population, is given as 0.018.
The logistic equation is given by:
dN/dt = rN(1-N/K)
where N is the population size, t is time, r is the intrinsic growth rate, and K is the carrying capacity.
Given that the carrying capacity is 2506 and the initial population size is n(0), we can rewrite the equation as:
dN/dt = 0.018N(1-N/2506)
This equation describes how the population size changes over time based on the initial population size and the carrying capacity. The equation predicts that as the population approaches the carrying capacity, the growth rate slows down until it eventually levels off.
In summary, the logistic equation satisfied by the population with an initial size of n(0) is dN/dt = 0.018N(1-N/2506), and it can be used to predict how the population size changes over time. This equation shows that population growth is not always unlimited and can be influenced by environmental factors such as carrying capacity.
Based on the information provided, we can construct a logistic equation for the given population growth model. The logistic model is represented by the equation:
N(t) = K / (1 + (K - N0) / (N0 * e^(-r * t)))
Where:
- N(t) is the population size at time t
- K is the environmental carrying capacity (in this case, 2506)
- N0 is the initial population size (N(0))
- r is the intrinsic growth rate (0.018)
- e is the base of the natural logarithm (approximately 2.718)
- t is the time
Since we don't have the initial population size N(0), we'll represent it as a variable. The logistic equation for this population will be:
N(t) = 2506 / (1 + (2506 - N0) / (N0 * e^(-0.018 * t)))
This equation describes the population growth over time based on the given r value and carrying capacity.
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You pick a card at random. 4 5 6 7 What is P(4 or less than 5)? Write your answer as a fraction or whole number.
Step-by-step explanation:
if you gave us the whole information, then we have 4 cards with the values : 4, 5, 6 and 7.
the probabilty to pick the card with the value 4 is the same as the probabilty to pick a card with value less than 5.
in both cases there is only one card for the desired outcome : 4.
therefore, P(4 or less than 5) = P(4)
a probability is always the ratio
desired cases / totally possible cases
so, in our case the probabilty to pick one specific card out of a total of 4 cards is
1/4
and so, the probability to pick 4 is
P(4) = 1/4.
a carpenter is building a rectangular room with a fixed perimeter of 600 feet. what are the dimensions of the largest room that can be built? what is its area? 150 ft by 150 ft; 22,500 ft2 300 ft by 300 ft; 90,000 ft2 60 ft by 540ft; 32,400 ft2 150 ft by 450 ft; 67,500 ft2
To find the dimensions of the largest room that can be built with a fixed perimeter of 600 feet.
We need to divide the perimeter by 2 and use that as the sum of two adjacent sides. Let's call the length of the rectangle "l" and the width "w".
So we have: 2l + 2w = 600
Simplifying: l + w = 300
We want to maximize the area of the rectangle, which is given by: A = lw
We can solve for one variable in terms of the other: l = 300 - w
Substituting into the area equation:
A = (300 - w)w
A = 300w - w^2
To maximize the area, we need to find the value of w that makes the derivative of A with respect to w equal to 0: dA/dw = 300 - 2w = 0
w = 150
So the width of the rectangle is 150 feet. Substituting back into the perimeter equation: l + 150 = 300
l = 150
So the length of the rectangle is also 150 feet.
Therefore, the largest room that can be built has dimensions 150 ft by 150 ft, and its area is: A = lw = 150 * 150 = 22,500 ft^2
The dimensions of the largest rectangular room a carpenter can build with a fixed perimeter of 600 feet are 150 ft by 150 ft. The area of this room is 22,500 ft². This is because when the length and width are equal, the area of the rectangle is maximized.
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Ushi throws a fair 6-sided dice.
Find an outcome that has a probability of:
¡.50%
Rolling an even number (2, 4, or 6) has a 50% probability because there are 3 even numbers out of the 6 possible outcomes. Similarly, rolling an odd number (1, 3, or 5) also has a 50% probability.
To determine an outcome with a probability of 50% when Ushi throws a fair 6-sided dice.
A fair 6-sided dice has 6 equally likely outcomes: 1, 2, 3, 4, 5, and 6. Since there are 6 possible outcomes, no single outcome (such as rolling a 1 or a 6) can have a 50% probability. However, we can group outcomes to achieve a 50% probability.
For instance, rolling an even number (2, 4, or 6) has a 50% probability because there are 3 even numbers out of the 6 possible outcomes. Similarly, rolling an odd number (1, 3, or 5) also has a 50% probability.
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HELP ME AGAIN PLEEEEAAASSEE WHO EVER ANSWERS MY QUESTION FIRST
I WILL GIVE BRAINLIST :))Which of the following is a line? (1 point)
Figure A has two rays connected at a vertex, Figure B is a line with one endpoint and the other end has an arrow, Figure C is a line with two endpoints, and Figure D is a line with an arrow at each end
a
Figure A
b
Figure B
c
Figure C
d
Figure D
C, figure C
hope this helps, and have a good day! :)
pls help me i dont know the answer
Answer:
We have parallel lines intersected by a transversal.
Corresponding angles are congruent:
5q + 3 = 3q + 11
2q = 8, so q = 4
Alternate interior angles are congruent:
3r - 4 = 6r - 19
3r = 15, so r = 5
Consecutive interior angles are supplementary:
4s + s + 90 = 180
5s = 90, so s = 18
Supplementary angles:
2t + 20 = 4t + 10
2t = 10, so t = 5
STATS HELP PLEASE
Suppose a normal distribution has a mean of 120 and a standard deviation of
10. What is P(x>110)?
A. 0.475
B. 0.16
C. 0.975
OD. 0.84
A normal distribution has a mean of 120 and a standard deviation of 10 then P(x > 110) is 0.84
Given that mean is 120 and a standard deviation of 10
The z-score for x=110 can be calculated as:
z = (x - μ) / σ = (110 - 120) / 10 = -1
Using a standard normal distribution table
we can find that the probability of a z-score being greater than -1 is 0.8413.
Therefore, P(x > 110) = 1 - P(x ≤ 110)
= 1 - P(z ≤ -1)
= 1 - 0.1587
= 0.8413.
Hence, a normal distribution has a mean of 120 and a standard deviation of 10 then P(x > 110) is 0.84
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Management for a chain of restaurants recorded the number of appetizers, X, ordered by tables dining. They observed that X had the following probability distribution.
Value of X 0 1 2 3 or more
Probability 0.60 0.35 0.04 0.01
The probability that a randomly chosen table orders at least one appetizer is
a. 0.35.
b. 0.40.
c. 0.39.
d. None of the above
The probability that a randomly chosen table orders at least one appetizer is 0.40, which corresponds to option b. 0.40.
The probability that a randomly chosen table orders at least one appetizer can be calculated by adding the probabilities of the table ordering 1, 2, or 3 or more appetizers. Therefore, the probability is:
0.35 + 0.04 + 0.01 = 0.40
Therefore, the correct answer is b. 0.40. It is important to note that this probability distribution can be used to make informed decisions about how much of each appetizer to stock and how to price them to maximize profits. The management of the chain of restaurants can also use this information to predict the demand for appetizers and adjust their marketing strategy accordingly. Additionally, they can use this information to monitor their performance and identify areas of improvement in their service or menu.
To find the probability that a randomly chosen table orders at least one appetizer, we need to consider the probabilities of ordering 1, 2, or 3 or more appetizers. In this case, the probability distribution is given as:
Value of X: 0 1 2 3 or more
Probability: 0.60 0.35 0.04 0.01
To calculate the probability of a table ordering at least one appetizer, we need to add the probabilities for 1, 2, and 3 or more appetizers:
P(at least one appetizer) = P(1) + P(2) + P(3 or more)
P(at least one appetizer) = 0.35 + 0.04 + 0.01
Now, we sum the probabilities:
P(at least one appetizer) = 0.35 + 0.04 + 0.01 = 0.40
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{(3,4),(-2,3),(7,1),(-2,0.5),(-0.5,4)} the domain ,range, and what relationship is function or unfunctional because ?
Answer:
Step-by-step explanation:
The given set of points is:
{(3,4),(-2,3),(7,1),(-2,0.5),(-0.5,4)}
To determine if this set of points represents a function or not, we need to check if each input (x-coordinate) has a unique output (y-coordinate). We also need to find the domain and range of the set of points.
Domain:
The domain of a function is the set of all possible input values (x-coordinates) for which the function is defined. In this case, the domain is simply the set of all x-coordinates of the given points. Therefore, the domain is:
{-2, -0.5, 3, 7}
Range:
The range of a function is the set of all possible output values (y-coordinates) that the function can produce. In this case, the range is simply the set of all y-coordinates of the given points. Therefore, the range is:
{0.5, 1, 3, 4}
Functionality:
To determine if the given set of points represents a function, we need to check if each x-coordinate has a unique y-coordinate. We can see that all x-coordinates in the domain have a unique y-coordinate in the range. Therefore, the given set of points represents a function.
In summary:
Domain: {-2, -0.5, 3, 7}
Range: {0.5, 1, 3, 4}
Functionality: The given set of points represents a function.
2 3/4 x 5 4/5 = ____.
The right set of parallel lines is a translation right 10 units of the left set of
parallel lines. Drag the left set of parallel lines and try to move them onto the right set. Are the two sets of parallel lines the
same? What does this mean about how parallel lines change when you translate them?
The translation of angles and parallel lines is discussed in the following query. Below is a detailed response.
When you translate an item in geometry, you are essentially turning it in a different direction. Consequently, an angle that has been translated is one that has been turned in a new direction.
The photograph from the first selection in section A makes it obvious that the angle remained the same. From the positive to the negative side of the x-axis, it moves seven units.
The angles also don't alter from Part B. It should be noted that a translation or rotation of an angle has no effect on the angles.
What we got is the reflection of the angles from Part C. Due to the fact that they are reflections of one another, this indicates that both angles are equal.
The two parallel sets of lines from Part D will continue to be parallel as long as they are both translated at the same time.
The parallel line that is at an angle to the Y-axis will not meet the parallel line that is at an angle to the x-axis if they are extended infinitely, despite the fact that in each set of parallel lines, the two sets of lines remain equally distant from one another.
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Your question is incomplete but most probably your full question was,
Jina received an $80 gift card for a coffee store she used it in buying some coffee that cost $7.72 per pound after buying the coffee she had 41.40 left on the on her card how many pounds of coffee did she buy
Answer: Jina bought 5 pounds of coffee by spending a total of $38.60.
Step-by-step explanation:
According to this problem, Jina has an $80 gift card for a coffee store and when she bought some pounds of coffee, she had $41.40 left.
To solve this equation you will need to rephrase this equation to
80 - 41.40 = x
When you subtract the problem, you should get $38.60.
80 - 41.40 = 38.60
Now since Jina bough coffee that costs $7.72 per pound, you will need to divide that by the amount you have just subtracted.
38.60 ÷ 7.72
When you divide "38.60 ÷ 7.72", you should get the number 5.
Therefore, Jina bought 5 pounds worth of coffee, making her total on her gift card $38.60. Hope this helps!
-From 5th Grade Honors Student
What’s the answer to this question?
Answer:
The slope of this line is 1/4.
The correct answer is D.
Could anyone help me with this problem? Thanks you! <3
Evaluate p(2)
Answer:
-3
Step-by-step explanation:
You want the value of p(2), given the piecewise definition of function p.
DomainThe function definition divides its domain into three (3) parts. The first step in evaluating the function for a particular value of x is to find the applicable domain.
Here, you want the value of p(x) for x = 2.
The third domain expression (2 ≤ x < 5) includes the value x = 2, so the third function definition applies:
Evaluationp(x) = x -5
p(2) = 2 -5 = -3
The value of p(2) is -3.
__
Additional comment
A graph of the function is attached. The point of interest is circled in green. (2, p(2)) = (2, -3).
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a fortune cookie company makes 213 different fortunes. a student eats at a restaurant that uses fortunes from this company and gives each customer one fortune cookie at the end of each meal. what is the largest possible number of times that the student can eat at the restaurant without getting the same fortune four times?
The possible largest number of times that the student can eat at the restaurant without getting the same fortune four times is 10.
To solve this problem, we need to use the pigeonhole principle. This principle states that if n items are placed into m containers where n > m, then at least one container must contain more than one item.
1. The company makes 213 different fortunes.
2. The student wants to avoid getting the same fortune four times.
3. To calculate the largest possible number of times the student can eat at the restaurant without getting the same fortune four times, we need to multiply the number of different fortunes by 3 (since they can get each fortune up to 3 times).
4. So, 213 different fortunes multiplied by 3 visits per fortune equals 639 total visits (213 * 3 = 639).
Therefore, the student can eat at the restaurant 639 times without getting the same fortune four times.
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A researcher interested in the habits of smokers collected data on the number of cigarettes smoked in one month and the number of time they visited church that month. The correlation for these two variables ended up being -0.74. If a smoker who had never been to church started attending church regularly what should we expect to happen?
Choose one answer.
The smoker will not attend church for very long.
We can not conclude anything about the future habits of the smoker.
The smoker will smoke less cigarettes.
The smoker will smoke more cigarettes.
Based on the negative correlation of -0.74, we can expect that if a smoker who had never been to church started attending church regularly, they would smoke less cigarettes.
However, it is important to note that correlation does not necessarily imply causation, and there may be other factors that could also influence the smoker's cigarette consumption. Therefore, while this correlation provides insight into the relationship between church attendance and smoking habits, it is not a definitive predictor of individual behavior.
Based on the correlation of -0.74, we can expect that as the number of church visits increases, the number of cigarettes smoked will likely decrease. Therefore, if a smoker who had never been to church starts attending regularly, we should expect that the smoker will smoke less cigarettes. Keep in mind that correlation does not imply causation, so this is not a guaranteed outcome, but it suggests a possible trend based on the data collected.
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Find the total surface area.
The surface area of the figure is equal to 641.1 square inches.
How to calculate for the surface area of the figureThe figure comprises of a smaller and a bigger cone, the sum of their surface area is the surface area of the figure.
Surface area of cone = πr[r + √(h² + r²)]
surface area of smaller cone = 22/7 × 6in[6in + √(8² + 6²)]
surface area of smaller cone = 301.7 square inches
Height of the bigger cone = √(12² - 6²) = 10.4in
surface area of bigger cone = 22/7 × 6in[6in + √(10.4² + 6²)]
surface area of bigger cone = 339.4 square inches
surface area of the shape = 301.7 + 339.4
surface area of the shape = 641.1 square inches.
Therefore, the surface area of the figure is equal to 641.1 square inches.
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Madison is studying the precipitation data over several locations in the US. The precipitation is seasonal and the USGS has several raingages over several states. She is trying to project the precipitation for the following year. How would order the following steps? 1. Download the precipitation data from the USGS website 2. Cluster the data into different seasons and states and perform a regression to predict precipitation in each cluster 3. Reformat the dates on all precipitation data to be in the same time zone 4. Create a line chart that shows precipitation by state and by season
By downloading the data, Madison will have access to the necessary information to analyze. Reformatting the dates to be in the same time zone will allow for easier analysis and comparison of the data.
The following steps should be ordered as follows for Madison to project precipitation for the following year:
1. Download the precipitation data from the USGS website
2. Reformat the dates on all precipitation data to be in the same time zone
3. Cluster the data into different seasons and states and perform a regression to predict precipitation in each cluster
4. Create a line chart that shows precipitation by state and by season
Clustering the data into different seasons and states and performing a regression analysis will allow for predictions of precipitation in each cluster. Finally, creating a line chart will provide a visual representation of the data, allowing for easier interpretation and analysis.
To help Madison study the precipitation data and make projections, she should follow these steps in order:
1. Download the precipitation data from the USGS website.
2. Reformat the dates on all precipitation data to be in the same time zone.
3. Cluster the data into different seasons and states and perform a regression to predict precipitation in each cluster.
4. Create a line chart that shows precipitation by state and by season.
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A store manager decides to clear out aquariums to make room for new inventory. Now a $52 aquarium will be on sale for only $13. What is the discount, as a percentage?
Write your answer using a percent sign (%).
The discount given on the aquarium is 75%.
Given that an aquarium has an original price of $52 which is now being sold at $13, we need to find the discount given on it,
So, the discount is calculated by =
original price - selling price / original price × 100%
So,
Discount = 52 - 13 / 52 × 100%
= 39 / 52 × 100%
= 0.75 × 100%
= 75%
Hence the discount given on the aquarium is 75%.
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A polygon has vertices whose coordinates are A(1, 4), B(4, -1), C(-1, -4), and D(-4,1). What is the midpoint for segment AB?
(5/2, 3/2)
(5,3)
(-5/3, -3/2)
(-3, -5)
Answer:
(5/2, 3/2)
Step-by-step explanation:
A = (1, 4)
B = (4, -1)
((x1 + x2)/2, (y1 + y2)/2) = midpoint formula
(x1, y1) = (1, 4) and (x2, y2) = (4, -1)
((1 + 4)/2, (4 + (-1))/2) =
5/2 , 3/2
2. Given parallelogram ABCD, find the lengths and angles required.
5x+2
A
(2y + 50
(3y +40)
с
A. Find the value of x and the lengths of sides AB and CD. Show your work. (5
points)
Answer:
D
8x-7
B. Find the value of y and m ZA and mZD. Show your work. (hint: ZA and ZD
are straight angles) (5 points)
Answer:
Applying the properties of a parallelogram, we have:
A. x = 3; AB = 17 units; CD = 17 units
B. y = 18; m<A = 86 degrees; m<D = 94 degrees.
How to Find the Lengths and Angles of the Parallelogram?Recall that. the opposite sides of a parallelogram are both parallel to each other and also congruent to each other, while its adjacent angles are supplementary.
Therefore, we have:
A. 5x + 2 = 8x - 7
Combine like terms:
5x - 8x = -2 - 7
-3x = -9
x = 3
AB = 5x + 2 = 5(3) + 2 = 17 units
CD = 17 units
B. 2y + 50 + 3y + 40 = 180 [supplementary angles]
Combine like terms:
5y = + 90 = 180
5y = 180 - 90
5y = 90
y = 18
m<A = 2y + 50 = 2(18) + 50 = 86 degrees
m<D = 3y + 40 = 3(18) + 40 = 94 degrees.
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installation of some software package requires downloading 90 files. on the average, it takes 18 seconds to download one file, with a standard deviation of 10 seconds. what is the probability that the installation of the software package takes more than 28 minutes? answer the following questions before computing the probability. what is the random variable of interest? is it continuous or discrete?
The final answer is So, to compute the probability, we need to find P(Z > 0.2) and subtract it from 1.
The random variable of interest in this scenario is the total time taken to download all 90 files and complete the installation of the software package.
This random variable is continuous since it represents a time duration, which can take on any value within a range. To compute the probability that the installation takes more than 28 minutes, we first need to calculate the mean and standard deviation of the total download time.
The mean download time for one file is given as 18 seconds, so the mean download time for 90 files is (18 seconds/file) * 90 files = 1620 seconds.
The standard deviation of the download time for one file is 10 seconds. Since the files are downloaded independently, the standard deviation of the total download time for 90 files can be calculated using the formula for the standard deviation of the sum of independent random variables:
Standard deviation of the total download time = square root(90) * 10 seconds =[tex]30 * 10[/tex] seconds = 300 seconds.
Now, to find the probability that the installation takes more than 28 minutes (which is equivalent to 28 minutes * 60 seconds = 1680 seconds), we need to standardize the value using the z-score formula:[tex]z = (x - μ) /[/tex]∅
where x is the desired time (1680 seconds), μ is the mean download time (1620 seconds), and σ is the standard deviation (300 seconds).
z = [tex]\frac{(1680 - 1620) }{300}[/tex]= [tex]\frac{60}{300}[/tex][tex]= 0.2[/tex]
Using a standard normal distribution table or a calculator, we can find the probability associated with a z-score of 0.2. The probability that the installation takes more than 28 minutes is equal to 1 minus this probability, as we are interested in the probability of the installation taking more time.
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Ellie is mixing fruit juices to make 1 litre of her favourite fruit cocktail.
She starts with 0.32 litres of apple juice and adds 0.5 litres of orange juice.
She finishes by adding blackcurrant juice.
How much blackcurrant juice should she add.
Answer:
0.18 litres
Step-by-step explanation:
To find out how much blackcurrant juice Ellie should add, we first need to determine how much space is left in the litre after she adds the apple and orange juice.
We can start by adding the apple and orange juice:
0.32 L + 0.5 L = 0.82 L
This means that there is 1 L - 0.82 L = 0.18 L of space left in the litre for the blackcurrant juice.
Therefore, Ellie should add 0.18 litres of blackcurrant juice to make 1 litre of her fruit cocktail.
REVIEW FROM 3.05
Multiply: (x + 2) (x² + 3x + 5)
Simplify and write your answer in Standard Form.
Answer:
x^3+5x^2+11x+10
Step-by-step explanation:
Multiply each term in the first expression by each term in the second expression and combine like terms.
have a great day and thx for your inquiry :)
Rick runs around a football field of circumference 264 meters. What is the radius of the field to the nearest whole number?
The circumference of the football field is given as 264 meters.
Let's assume that the radius of the football field is "r" meters. We know that the circumference of a circle is given by the formula C=2πr, where C is the circumference and r is the radius.
Therefore, we have:
C = 2πr
264 = 2πr (since C = 264 meters)
132 = πr
Now we can solve for the radius:
r = 132/π ≈ 42
Therefore, the radius of the football field is approximately 42 meters, rounded to the nearest whole number.
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Given the function defined in the table below, find the average rate of change, in simplest form, of the function over the interval 3 ≤ x ≤ 7
The average rate of change of the function over the interval 3 ≤ x ≤ 7 is 3/2 or 1.5.
How to find the average rate of changeTo find the average rate of change of a function over an interval, we can use the formula:
average rate of change = (f(b) - f(a)) / (b - a)
where a and
b are the endpoints of the interval and f(x) is the function.
Using the values from the table, we have:
a = 3, b = 7
f(a) = 2, f(b) = 8
Therefore, the average rate of change of the function over the interval 3 ≤ x ≤ 7 is:
average rate of change = (f(b) - f(a)) / (b - a) = (8 - 2) / (7 - 3) = 6/4 = 3/2
So the average rate of change of the function over the interval 3 ≤ x ≤ 7 is 3/2 or 1.5.
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Question 8
A gym asked 240 randomly selected members how many times they work out each week. The average response was 3.2 with a standard deviation of 18.
Use a 95% confidence interval to determine the maximum error of the estimate. Then estimate the mean of the population.
The population mean is Select Choice SHS Select Choice
The confidence interval for the population mean of approximately (2.973, 3.427)
How to solve for the confidence intervalThe maximum error
ME = 1.96 * (1.8 / √240)
ME ≈ 1.96 * (1.8 / 15.49)
ME 1.96 * 0.116
= 0.227
So, the maximum error of the estimate for this 95% confidence interval is approximately 0.227.
Since we are given the sample mean (x) = 3.2, we can use that to estimate the population mean (μ):
μ =x ± ME
μ = 3.2 ± 0.227
3.2 - 0.227 , 3.2 + 0.227
This gives us a 95% confidence interval for the population mean of approximately (2.973, 3.427).
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