The computation shows that the total amount or cost raised will be $250.
How to calculate the cost?From the information given, it was stated that the skating club collected $8 from each of the nine members and had already raised $178.
Therefore, the total amount will be;
= $178 + ($8 × 9)
= $178 + $72
= $250
Therefore, the total amount raised will be $250.
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Employees of a local university have been classified according to gender and job type. If an employee is selected at random, what is the probability that the employee is a member of the hourly staff, given that the employee is female?
Job Male Female
Faculty Member 55 5
Salaried Staff 15 25
Hourly Staff 30 20
The probability that the employee is a member of the hourly staff, given that the employee is female is 0.2 or 1/5.
We need to calculate the conditional probability of an employee being a member of the hourly staff given that the employee is female and all the employees of a local university have been classified according to gender and job type.
The given table is:
Job Male Female
Faculty Member 55 5
Salaried Staff 15 25
Hourly Staff 30 20
The total number of female employees is 5+25+20 = 50.
We are to find the probability of an employee being a member of the hourly staff given that the employee is female.
Mathematically, we can represent the above statement as:
P(Hourly staff | Female) = P(Hourly staff and Female) / P(Female)
Now,P(Hourly staff and Female) = 20/100 * 50 = 10P(Female) = 50/100
Therefore,P(Hourly staff | Female) = P(Hourly staff and Female) / P(Female)= 10 / 50= 1/5 = 0.2
Therefore, the probability that the employee is a member of the hourly staff, given that the employee is female is 0.2 or 1/5.
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10. Solve 3(x-1) = 9*
Answer:
x=4
Step-by-step explanation:
3(x-1)=9
3x-3=9
3x=9+3
3x=12
x=4
Answer:
x=4
Step-by-step explanation:
\(3(x - 1) = 9\)
\(x - 1 = 9 \div 3\)
\(x - 1 = 3\)
\(x = 3 + 1\)
\( x = 4\)
Thomas bought 4 shirts from a store. The price of each shirt was the same. After he bought the shirts, his account balance showed a change of −$89.08. What would have been the change to Thomas's account balance had he only bought 1 shirt from the store?
A. $22.27
B. -$22.27
C. $22.45
D. -$22.45
Answer:
B. -22.27
Step-by-step explanation:
To find the answer just divide the acount balance after he bought the 4 shirts by 4 to get the answer of what his balance would be after he bought 1 shirt.
13 years ago Mei what’s 35 years old. How old is she know
Hey there!
35 years of age is her past age so to find out her age you just simply ADD her past age (which is like 35) plus 13.
YOUR EQUATION:
35 + 13 = current age
See with basic addition (two digit) you work from BACK to FORTH. So let’s do it that way to make it “easier” to solve.
5 + 3 = 8
3 + 1 = 4
Therefore, your answer SHOULD be: 48
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Marco has 10 quarts of water and 20 cups of milk. How much liquid does he have in all?
How do u solve it?
Answer:
15.0721 quarts
Step-by-step explanation:
20 cups= 5.0721 quarts
10 quarts+5.0721=15.0721 quarts
if you need to convert the quarts just search 15.0721 quarts to whatever you need to convert it too.
hope this helps
Choose the system of equations which matches the following graph.
A. 3x-6y=12
9x-18y=36
B. 3x+6y=12
9x+18y=36
The system of equations that matches the given graph is:
A. 3x - 6y = 12
9x - 18y = 36
To determine which system of equations matches a given graph, we need to analyze the slope and intercepts of the lines in the graph.
Looking at the options provided:
A. 3x - 6y = 12
9x - 18y = 36
B. 3x + 6y = 12
9x + 18y = 36
Let's analyze the equations in each option:
For option A:
The first equation, 3x - 6y = 12, can be rearranged to slope-intercept form: y = (1/2)x - 2.
The second equation, 9x - 18y = 36, can be simplified to 3x - 6y = 12, which is the same as the first equation.
In option A, both equations represent the same line, as they are equivalent. Therefore, option A does not match the given graph.
For option B:
The first equation, 3x + 6y = 12, can be rearranged to slope-intercept form: y = (-1/2)x + 2.
The second equation, 9x + 18y = 36, can be simplified to 3x + 6y = 12, which is the same as the first equation.
In option B, both equations also represent the same line, as they are equivalent. Therefore, option B does not match the given graph.
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kira runs 4 miles in 30 minutes. at the same rate, how many miles would she run in 48 minutes?
Answer:
13
Step-by-step explanation:
Consider the following sample data values. 7 4 6 12 8 15 1 9 13 a) Calculate the range. b) Calculate the sample variance. c) Calculate the sample standard deviation. a) The range is 14 b) The sample variance is (Round to two decimal places as needed.) c) The sample standard deviation is (Round to two decimal places as needed.)
a) The range is 14.
b) The sample variance is 20.78.
c) The sample standard deviation is 4.56.
a) Range
The range of a given set of data values is the difference between the maximum and minimum values in the set. In this case, the maximum value is 15 and the minimum value is 1. So, the range is:
Range = maximum value - minimum value
Range = 15 - 1
Range = 14
b) Sample variance
To calculate the sample variance, follow these steps:
1. Calculate the sample mean (X). To do this, add up all of the data values and divide by the total number of values:
n = 9
∑x = 7 + 4 + 6 + 12 + 8 + 15 + 1 + 9 + 13 = 75
X = ∑x/n = 75/9 = 8.33
2. Subtract the sample mean from each data value, square the result, and add up all of the squares:
(7 - 8.33)² + (4 - 8.33)² + (6 - 8.33)² + (12 - 8.33)² + (8 - 8.33)² + (15 - 8.33)² + (1 - 8.33)² + (9 - 8.33)² + (13 - 8.33)² = 166.23
3. Divide the sum of squares by one less than the total number of values to get the sample variance:
s² = ∑(x - X)²/(n - 1) = 166.23/8 = 20.78
Therefore, the sample variance is 20.78 (rounded to two decimal places).
c) Sample standard deviation
To calculate the sample standard deviation, take the square root of the sample variance:
s = √s² = √20.78 = 4.56
Therefore, the sample standard deviation is 4.56 (rounded to two decimal places).
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Question 5 About 9% of the population has a particular genetic mutation. 500 people are randomly selected. Find the standard deviation for the number of people with the genetic mutation in such groups of 500. Round your answer to three decimal places
Therefore, the standard deviation for the number of people with the genetic mutation in groups of 500 is approximately 6.726.
To find the standard deviation for the number of people with the genetic mutation in groups of 500, we can use the binomial distribution formula.
Given:
Probability of having the genetic mutation (p) = 0.09
Sample size (n) = 500
The standard deviation (σ) of a binomial distribution is calculated using the formula:
σ = √(n * p * (1 - p))
Substituting the given values:
σ = √(500 * 0.09 * (1 - 0.09))
Calculating the standard deviation:
σ ≈ 6.726 (rounded to three decimal places)
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what’s the biggest difference between an area variance and a use variance?
The main difference between an area variance and a use variance is that area variance allows for an exception to zoning regulations related to the physical characteristics of a property, while use variance allows for an exception to regulations related to the intended use of a property.
An area variance is typically granted when a property owner is unable to comply with zoning regulations related to setbacks, building height, lot coverage, or other physical characteristics of a property.
In contrast, a use variance allows a property owner to use their property for a purpose that is not permitted under the current zoning regulations. This may include using a residential property for commercial purposes or using a commercial property for residential purposes.
Use variances are generally more difficult to obtain than area variances, as they require a showing of a unique hardship or practical difficulty that cannot be addressed through other means.
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The only soft-drink flavours available at a party were cola and
raspberry.
In total, twenty six soft-drinks were consumed.
9 guests had one raspberry drink only, 13 guests had one cola
drink only and the remaining guests had one drink of each flavour.
a) How many guests were there?
b)
What is the probability that a randomly chosen party guest had:
(i) a cola drink
(ii)
a raspberry drink
(iii) both a raspberry and cola drink?
The number of guests that were at the party is 26. This was illustrated in the probability.
How to compute the probability?From the information, it was stated that twenty six soft-drinks were consumed. Therefore, it implies that there were 26 people.
From the information, 9 guests had raspberry and 13 had cola while the remaining was shared equally. Therefore, the raspberry consumed will be 11 and 15 cola were drank.
The probability that a randomly chosen party guest had a cola drink will be:
= 15/26
The probability that a randomly chosen party guest had a raspberry drink will be:
= 11/26
The probability of the people who had both a raspberry and cola drink will be 0 since everyone had different drinks.
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PLEASE HELP xoxo The students at Christina's school voted for a new school color. 10 students voted for orange and the other 90 students voted for purple. What percentage of the students voted for orange?
Answer:
10%
Step-by-step explanation:
10+90= 100 students total
10 is 10% of 100
A new movie is coming out that you and your family really want to see. You are going to buy tickets for
opening day as soon as they go on sale and want to get extra tickets so friends could come too. You
have $224.50 and wants to get as many tickets as possible. You want to get at least 5 adult tickets and
4 kids tickets.
Use the ticket prices from your local movie theater or look up the average prices of child and adult
tickets for the movie theater.
In your discussion post, share the equations that you used to model this situation and answer the
following questions:
1. Can you get at least 5 adult tickets and 4 kids tickets?
2. What is the most tickets you could have bought and met the given conditions? What number of
each type of ticket is that?
3. After doing more research, you find out that you can rent out a whole theater for $190. If you rent
the theater out, you can have up to 24 people, regardless of whether they are children or adults. In
what situations would it be a better deal to rent out the theater?
1. The equation for the cost of adult tickets is:
$8.97 x number of adult tickets
The equation for the cost of child tickets is:
$6.79 x number of child tickets
The equation for the cost of renting out the theater is:
$190
2. Yes, you can get at least 5 adult tickets and 4 kids tickets.
3. The most tickets you could have bought and met the given conditions is 9 adult tickets and 8 kids tickets.
4. It would be a better deal to rent out the theater if you had more than 24 people.
You must be aware of the costs of adult and child tickets in order to determine if you can purchase at least 5 adult tickets and 4 child tickets. A cinema ticket for an adult costs $8.97 on average, while a ticket for a child costs $6.79 on average. 4 children's tickets would cost $27.16 and 5 adult tickets would cost $44.85 as a result. You would then have $202.49 remaining, which would be enough to pay for 7 additional child tickets. Thus, you can purchase at least 5 adult and 4 child tickets.
The most tickets you could have purchased while still fulfilling the requirements is nine adult and eight child tickets. The total price would be $135.05. The adult tickets would cost $80.73 and the child tickets would cost $54.32. You would now have $89.45, which is insufficient to purchase any additional tickets.
Renting out the theater might be a great option if you have more than 24 individuals. This is due to the fact that hiring out the theater costs $190 and allows for a maximum of 24 guests, both adults and children. Consequently, renting the theater would be less expensive than purchasing individual tickets if you had more than 24 individuals.
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Charlie is making copies of fliers to advertise his new club at school. The cost for 25 copies is $3.75. What is c, the total cost Charlie will pay for 40 copies?
The total cost for Charlie to make 40 copies of flyers is $6
Given the fact that 25 copies of flyers is costing him $3.75, we will then need to find the cost of each copy of the flyer. The figure is calculated using unit rates as follows:
25x = 3.75
x = 3.75/25
x = 0.15
so each copy of a flyer will cost him $0.15
To make 40 copies of flyers, Charlie will need to spend:
$0.15 × 40 = $6
So the amount of money Charlie will have to spend in order to make a copy of 40 flyers is $6
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Answer: Charlie will pay 6$.
Step-by-step explanation:
An online furniture store sells chairs for $150 each and tables for $750 each. The store must sell at least $12000 worth of chairs and tables each day. Write an inequality that could represent the possible values for the number of tables sold, tt, and the number of chairs sold, cc, that would satisfy the constraint.
An inequality that could represent the possible values for the number of tables sold, t, and the number of chairs sold, c, that would satisfy the constraint : 150c + 750t ≥ 12000
Let the number of chairs sold = c
Let the number of tables sold = t
the price for each chair = $150
the price for each table = $750
The inequality that could represent the number of tables and chairs sold will be:
(150 × c) + (750 × t) ≥ 12000
150c + 750t ≥ 12000
Therefore, an inequality that could represent the possible values for the number of tables sold, t, and the number of chairs sold, c, that would satisfy the constraint : 150c + 750t ≥ 12000
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3. When x = 6, which number is closest to the value of y on the line of best fit in the graph below?
09
01
07
10
0987
65
432
2
1
➤X
0 1 2 3 4 5 6 7 8 9 10
Answer:
9
Step-by-step explanation:
Find the relation and solve the answers. Options are given below.
Answer:
The correct option is;
A. 453
Step-by-step explanation:
The given numbers are not related by factors, because the factors of 779 are 1, 19, 41, and 779
Similarly the factors of 926 are 1, 2, 463, 926
Therefore, the numbers are related by direct association of each digit of the central number to each of the three numbers on the vertices of the triangle as follows;
For the first triangle, we have the numbers at the vertices are; at the top, 14, at the bottom left is 21, and at the bottom right is 36, we have;
Top number divided by 2 gives 14/2 \({}\) = 7
Bottom left number divided by 3 gives 21/3 \({}\) = 7
Bottom right number divided by 4 gives 36/4 = 9
From which we have the number at the center which is 779
Similarly, for the second triangle, we have the numbers at the vertices are; at the top, 18, at the bottom left is 6, and at the bottom right is 24, we have;
Top number divided by 2 gives 18/2 \({}\) = 9
Bottom left number divided by 3 gives 6/3 \({}\) = 2
Bottom right number divided by 4 gives 24/4 = 6
From which we have the number at the center which is 962
Therefore, when we have, the numbers at the vertices as follows;
At the top, 8, at the bottom left is 15, and at the bottom right is 12, we have;
Top number divided by 2 gives 8/2 \({}\) = 4
Bottom left number divided by 3 gives 15/3 \({}\) = 5
Bottom right number divided by 4 gives 12/4 = 3
From which we have the number at the center is 453.
determine whether the random variable described is discrete or continuous or qualitative: the time (in minute) you must wait in line at the grocery store
The time you must wait in line at the grocery store is best characterized as a continuous random variable.
The random variable described, the time you must wait in line at the grocery store, can be categorized as a continuous random variable.
A continuous random variable is one that can take on any value within a specific range or interval. In this case, the time you must wait in line can theoretically take on any positive real value, from a fraction of a minute to potentially an extended period of time.
For instance, you may wait 2.5 minutes, 3.726 minutes, or even 10.152 minutes. The time is not restricted to specific discrete values or intervals; it can be infinitely subdivided.
In contrast, a discrete random variable would be one that can only take on a countable number of distinct values. For example, the number of people in line at the grocery store would be a discrete random variable since it can only be a whole number (1 person, 2 people, 3 people, etc.).
Additionally, it is important to note that the random variable in question is not qualitative. Qualitative variables are typically categorical or non-numerical in nature, representing qualities or attributes rather than quantities.
Examples of qualitative variables could be the color of a car or the type of grocery items purchased.
In this case, the time you wait in line is a quantitative variable measured in minutes and is thus not qualitative. Therefore, the time you must wait in line at the grocery store is best characterized as a continuous random variable.
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what is the domain of validity for csc 0=1/sin 0
a. all real numbers
b. all real numbers except odd multiples of pi/2
c. all real numbers except even multiples of pi/2
d. all real numbers except multiples of pi
The correct answer is (b) all real numbers except odd multiples of π/2. The domain of validity for cscθ (cosecant) is restricted because cosecant is undefined when the sine of an angle is zero.
In the trigonometric identity cscθ = 1/sinθ, the denominator sinθ becomes zero at odd multiples of π/2 (such as π/2, 3π/2, 5π/2, etc.), resulting in a division by zero error. Therefore, the cosecant function is not defined for these values of θ.
For all other real numbers θ, the sine function is non-zero and well-defined, allowing us to calculate the reciprocal of the sine and determine the value of the cosecant. Hence, the domain of validity for cscθ is all real numbers except odd multiples of π/2, as stated in option (b).
It's important to note that in trigonometry, the domain of validity is determined by avoiding any values that would lead to undefined expressions or division by zero errors.
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The domain of validity for csc θ = 1/sin θ is all real numbers except multiples of π, because at these points the sine function equals zero, and division by zero is undefined.
Explanation:In mathematics, the cosecant function (csc), is defined as the reciprocal of the sine function, or 1/sinθ. The domain of a function are all the possible input values that will yield real numbers (output). For the csc function, its domain includes all real numbers except where the denominator is zero because division by zero is undefined.
In the unit circle context, sine equals zero at 0, π, 2π, ..., and the negative counterparts. Basically, these are the multiples of π. Thus, for the csc function, the domain is all real numbers except multiples of π, which matches option d in your choices.
The domain of validity for csc θ = 1/sin θ is all real numbers except multiples of π.
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Evaluate 7P6
Help please and thanks
Answer: 5,040
Step-by-step explanation: The value of 7P6 is 5,040. To evaluate this, you can use the formula for permutations: nPr = n! / (n - r)!, where n is the total number of items and r is the number of items being selected. In this case, n = 7 and r = 6, so 7P6 = 7! / (7 - 6)! = 7! / 1! = 5,040.
What equation could be used to find the value of x? (ANSWER QUICK)
Answer:
2(5.5x -1.5) + 2(6x +2.5) = 94 (You may want to simplify!)
Step-by-step explanation:
add up to perimeter which = 94
Use the following table to find the Rate of Change.
Answer:
x=1 and y= 6
Step-by-step explanation:
and for y its a positive cause their both negitives
Does anybody know this?Two complementary angles are in the ratio of 4:6 find the measure of the smallest angle and the value of x.
Answer:
36
Step-by-step explanation:
A ratio 4:6 means the one quantity is 4/10 of the full thing:
While the other quantity is 6/10 of the full thing
So the smaller angle will be 4/10 of the the complementary angle.
Complementary angle is 90.
So 4/10 of 90 is 36.
Algebraic expression s pls help fast .... please ............
Answer:
P = 10n + 50
Step-by-step explanation:
fixed charge 50
10 / unit
for n units of water charge is n * 10
Water bill is P
P = n * 10 + 50
P = 10n + 50
A sports arena has 40 soda vendors. Each of whom sells 200 sodas per event. Management estimates that for each additional vendor, the yield per vendor decreases by 4. How many additional vendors should management hire to maximize the number of sodas sold.
Management should hire 25 additional vendors to maximize the number of sodas sold.
Let x be the number of additional vendors that management hires. Then the total number of vendors is 40 + x, and the yield per vendor is 200 - 4x (since the yield decreases by 4 for each additional vendor).
The total number of sodas sold is the product of the number of vendors and the yield per vendor:
Total sodas sold = (40 + x) * (200 - 4x)
To maximize the number of sodas sold, we take the derivative of this expression with respect to x and set it equal to zero:
d/dx [(40 + x) * (200 - 4x)] =
Expanding and simplifying, we get:
-8x² + 120x + 8000 = 0
Dividing both sides by -8, we get:
x² - 15x - 1000 = 0
Using the quadratic formula, we solve for x:
x = (15 ± sqrt(15² + 411000)) / 2
x = (15 ± 35) / 2
x = -10 or x = 25
Since we can't hire a negative number of vendors, the only sensible solution is x = 25. Therefore, management should hire 25 additional vendors to maximize the number of sodas sold.
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What is the possible range of y-values that, along with x=7 form a solution to the following inequality?
4x –11y < -5
Answer:
4x –11y < -5, x=7
Step-by-step explanation:
\(\huge\mathtt\colorbox{white}{See attachment pl}\)
first interpret the slope. select the correct choice below and, if necessary, fill in the answer box to complete your choice.
An essential concept in mathematics and can be applied to a variety of fields such as physics, economics, and engineering.
The slope of a line in a Cartesian plane is a numerical representation of its steepness and inclination relative to the x-axis.
The slope of a straight line refers to the rise or fall of the y-coordinate as it moves from left to right along the x-axis.
There are a few different ways to interpret the slope of a line, but generally it can be thought of as the rate at which the dependent variable changes with respect to the independent variable.
When the slope is positive, the line rises from left to right, indicating that the dependent variable is increasing as the independent variable increases.
In other words, there is a direct relationship between the two variables.
Conversely, when the slope is negative, the line falls from left to right, indicating that the dependent variable is decreasing as the independent variable increases.
This means that there is an inverse relationship between the two variables.
The magnitude of the slope can also provide information about the relationship between the variables.
If the slope is close to zero, then the relationship between the two variables is weak or nonexistent.
However, if the slope is large in magnitude (i.e. close to 1 or -1), then there is a strong relationship between the variables.
A slope of zero indicates that there is no change in the dependent variable as the independent variable changes, while a slope of undefined means that the line is vertical and has no slope.
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The number of calls received by a car towing service averages 19.2 per day (per 24-hour period). After finding the mean number of calls per hour, find the probability that in a randomly selected hour the number of calls is a)exactly 2 b) more than 2 c)less then 2
To find the mean number of calls per hour, we divide the average number of calls per day by 24:
Mean number of calls per hour = 19.2/24 = 0.8
a) To find the probability that in a randomly selected hour the number of calls is exactly 2, we use the Poisson distribution formula:
P(X = 2) = (e^-0.8)*(0.8^2)/(2!) = 0.213
b) To find the probability that in a randomly selected hour the number of calls is more than 2, we can use the complement rule and subtract the probability of getting 0, 1, or 2 calls from 1:
P(X > 2) = 1 - P(X = 0) - P(X = 1) - P(X = 2)
P(X > 2) = 1 - (e^-0.8)*(0.8^0)/(0!) - (e^-0.8)*(0.8^1)/(1!) - (e^-0.8)*(0.8^2)/(2!)
P(X > 2) = 0.579
c) To find the probability that in a randomly selected hour the number of calls is less than 2, we add the probabilities of getting 0 or 1 call:
P(X < 2) = P(X = 0) + P(X = 1)
P(X < 2) = (e^-0.8)*(0.8^0)/(0!) + (e^-0.8)*(0.8^1)/(1!)
P(X < 2) = 0.264.
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a dealership is allowing residents to test drive the following vehicles: 2 sports cars, 3 vans, and 3 trucks. if you select a random car to test drive, what are the odds it is not a sports car? write your answer as 1:2 which is reduced as much as possible.
Step-by-step explanation:
To find probability ratio wise
Sports Cars: Total Cars
3 + 3 + 2 = 8 total cars
2 sports cars
Ratio is 2:8
Reduces to 1:4
In each of the following pairs of numbers, state which whole number is on the left of the other number on the number line. Also write them with appropriate sign (>,<) between them (a) 530, 503 (b) 370, 307 (c) 98765, 56789 (d) 10023001
D) in the question
1002, 3001
Answer:
a) 503 b) 307 c) 56789 D) 1002
Step-by-step explanation:
Numbering starts from the left hand side and are arranged in ascending order.
A) (530, 503)
503 < 530
503 is lesser than 530 and as such it is encountered first when numbers are written, hence 503 will appear on the left side of the number line when both are written.
B.) (370, 307)
370 > 307
307 comes before 370, therefore it will appear on the left side of 370 when illustrated on a number line.
C.) (98765, 56789)
98765 > 56789
56789 will appear on the leftside of 98765 when both number are illustrated on a number line.
D.) 1002 < 3001
1002 will appear on the leftside of 98765 when both number are illustrated on a number line.