Answer:
For y = kx+b, the graph of the reflected function is y = (x-b)/k
Step-by-step explanation:
Simply substitute x for y and y for x
When you have y=kx+b
Switch variables
x=ky+b
Simplify
ky=x-b
y=(x-b)/k
Biologists are studying the distribution of the number of orca calves in pods worldwide. The average orca pod has 16 calves each year, with a standard deviation of 12 calves. Suppose a random sample of 40 pods is selected. Identify each of the following and make sure to round to the nearest whole number:
u=
o=
n=
u-×=
o-×=
The mean number of orca calves in a sample of 40 pods is 16, the standard deviation is 12, and the standard error is 3.
In this problem, we are given that the average orca pod has 16 calves each year, with a standard deviation of 12 calves. We are also told that a random sample of 40 pods is selected.
The mean of the sample is equal to the population mean, which is 16 calves. The standard deviation of the sample is equal to the population standard deviation divided by the square root of the sample size, which is 12 / sqrt(40) = 3 calves.
The standard error is a measure of how much the sample mean is likely to vary from the population mean. The standard error is equal to the standard deviation of the sample divided by the square root of the sample size, which is 3 / sqrt(40) = 0.73 calves.
In other words, if we were to take many samples of 40 pods, the mean number of orca calves in each sample would be expected to vary from the population mean of 16 calves by an amount of +/- 0.73 calves.
This means that it is possible for the sample mean to be as low as 15.27 calves or as high as 16.73 calves.
It is also important to note that the standard error is only a measure of how much the sample mean is likely to vary from the population mean. It does not tell us anything about the distribution of the sample data.
The distribution of the sample data could be normal, skewed, or uniform. Without knowing more about the distribution of the sample data, we cannot say anything about the probability of getting a particular number of orca calves in a sample of 40 pods.
To know more about probability click here
brainly.com/question/15124899
#SPJ11
An airplane is circling an airport at a height of 500m. the angle of depression of the control tower of the aiport is 15 degrees. what is the distance between the airplane and the tower
The distance between the airplane and the tower is approximately 1864.5 meters.
To solve this problem, we can use trigonometry. Let's draw a diagram to help us visualize the situation:
```
T
/|
/ |
/ | 500m
/a |
--------
x
```
In this diagram, "T" represents the control tower, "a" represents the airplane, and "x" represents the distance between them. We know that the height of the airplane is 500m, and the angle of depression from the tower to the airplane is 15 degrees. This means that the angle between the horizontal ground and the line from the tower to the airplane is also 15 degrees.
Using trigonometry, we can set up the following equation:
```
tan 15 = 500 / x
```
We can solve for "x" by multiplying both sides by "x" and then dividing by tan 15:
```
x = 500 / tan 15
```
Using a calculator, we can find that tan 15 is approximately 0.2679. Therefore:
```
x = 500 / 0.2679
x ≈ 1864.5m
```
So the distance between the airplane and the tower is approximately 1864.5 meters.
Learn more about trigonometry,
https://brainly.com/question/29766029
#SPJ11
Solve the system by using elementary row operations on the equations or on the augmented matrix. Follow the systemic elimination procedure.
x1+5x2=7
−2x1−7x2=−5
The solution of the system by using elementary row operations on the equations or on the augmented matrix following systemic elimination procedure is x1 = −8 and x2 = 3.
The complexity of the algebra required to solve a linear system rises as the number of equations and unknowns grows. By streamlining the nomenclature and standardizing processes, the necessary computations may be made easier to handle.
The procedures listed below should be followed in order to solve a system of linear equations using the row operations:
1. As a matrix equation, write the equations as AX = B.
2. Create an augmented matrix by converting the matrix equation to the following form: [A | B] (the word "augmented" refers to the vertical line we create to remind us where the equals sign belongs).
3. Reduce the augmented matrix using row operations to arrive at the answer.
Here is another question with an answer similar to this about augmented matrix: https://brainly.com/question/16796667
#SPJ4
suppose you want to estimate the proportion of students at a large university that approve of the new health care bill. you take an srs of 200 of the 25,000 undergraduate students and an srs of the 100 of the 5,000 graduate students. what type of sampling method was used?
Stratified Random Sampling method , was used to estimate the proportion of students at major universities who approve of the new health care law.
A simple random sample (SRS) of size n consists of n individuals from a population selected so that each set of individuals has an equal chance of being selected. Simple random samples of 200 out of 25,000 and 100 out of 5,000 graduate students are selected. The sampling method in the given question is stratified random sampling.
Stratified random sampling is a sampling method that involves dividing the population into smaller subgroups known as "strata". In stratified random sampling or stratification, strata are created based on common attributes or characteristics of members, such as income or educational attainment. Proportional Random Sampling is another name of name of Stratified Random Sampling.
When completing an analysis or research on a group of entities with similar characteristics, the researcher may find that the population size is too large to complete the research. To save time and money, the analyst may choose a more feasible approach by selecting a small group from the population. A small group is referred to as a " sample size ", which is a subset of the population used to represent the entire population. A sample can be selected from a population in a number of ways, one of which is the stratified random sampling method.
To learn more than Stratified Random Sampling method , refer :
https://brainly.com/question/15604044
#SPJ4
Terry drove 366 miles in 6 hours at a constant speed. How long would it take him to drive 427 miles at the same speed
Find his speed by dividing 366 miles by 6 hours:
366/6 = 61 miles per hour.
Divide 427 miles by 61 miles per hour to find the time:
427/61 = 7 hours
The answer is 7 hours.
Answer:
8 1/2 hours
Step-by-step explanation:
Sped
Lily is in charge of bringing bottled water to a party that has 37 guests.
Bottled water is sold in packs of 36 and each pack costs $42.12.
Part A: enter the total number of packs of water Lily will need to bring to the party if each guest is to have 3 bottles of
water.
Part B: enter the total cost, in dollars, Lily will spend on bottled water for the party.
Answer:
A) 4 packs
B) $168.48
Step-by-step explanation:
A) Lily will need to bring 4 packs of bottled water because 3 bottles per guest is 37 times 3, which gives us 111 water bottles. If each pack has 36, divide 111 water bottles by 36 giving us 3.08333333333 packs. Since you cannot buy 3.08333333333 packs of bottled water, Lily will need to round up to the nearest whole number to insure that each guest has exactly 3 water bottles. When you round up it will be 4 packs of bottled water.
B) Because Lily is bringing 4 packs of bottled water to the party and each pack costs $42.12, multiply 42.12 by 4 to get $168.48 as the total cost of her purchase.
simplify 3 * 3^2+ 8 / 2 -(4 + 3)
Answer:
24
Step-by-step explanation:
A cellular company offers a price of $19.95 for 200 minutes. Find the unit rate in cost per minute.
Answer:
≈ $0.10 /min
Step-by-step explanation:
does the data suggest that, on the average, the cardboard cap group took longer to complete the task than the transparent cap group?
Based on the data provided, it appears that on average, the cardboard cap group took longer to complete the task compared to the transparent cap group.
To answer this question, we would need to compare the average completion times of the two groups. If the average completion time of the cardboard cap group is higher than that of the transparent cap group, then the data would suggest that the cardboard cap group took longer to complete the task on average. Working capital is the difference between a company's current assets and short-term liabilities. The challenge is to identify the appropriate items for the various assets and liabilities on the company's balance sheet to determine the company's overall health and ability to meet short-term commitments. Therefore, we would need to calculate the average completion time for each group and compare the results to answer this question.
Learn more about Data:
brainly.com/question/29122373
#SPJ11
Find g(1) if g(x) = x^2 + 1.
2 3
Answer:
\(y = {1}^{2} + 1 = 1 + 1 = 2\)
I’ll give out brainliest to whoever pls help me
Answer:
45/4
Step-by-step explanation:
Answer: XY= 11.25
Step-by-step explanation:
So if the shapes are similar than the dimensions are similar also. So check it right we know that 12 doesn't go into 27 but we can still divide to solve for the dimension. so 27/12 = 2.25. We can also check this answer by multiplying 8 by 2.25 to hopefully get 18 since side AC is similar to side XZ. Since our numbers check out we can mulitply 5*2.25 to get 11.25 as the side for XY
The scale of a room in a blueprint is 5 in.: 9 ft. A wall in the same blueprint is 30 in. Complete the table.
Blueprint length (in.) 5
10
15
20
25
30
Actual length (ft)
9
How long is the actual wall?
The actual wall is
feet long
A window in the room has an actual width of 4.5 feet. Find the width of the window in the blueprint.
The width of the window in the blueprint is
in.
Answer:
54 feets
2.5 inches
Step-by-step explanation:
Given that:
Scale model:
5 in : 9ft
If 5 in = 9 ft
Hence, 1 in on the blue print equals
5 in = 9 ft
1 in = x
Cross multiply
5x = 9
x = 9/5 feets
Hence, 1 inches on the blueprint equals 9/5 feets actual
Blueprint length (in.) ___ Actual length (ft)
5 _________ 9
10 ________ 18
15 ________ 27
20 _______ 36
25 _______ 45
30 _______ 54
Hence ;
5 * 9/5 = 9 feets
10 * 9/5 = 18 feets
15 * 9/5 = 27 feets
20 * 9/5 = 36 feets
25 * 9/5 = 45 feets
30 * 9/5 = 54 feets
Window with actual width of 4.5 feets
Width of window in blue print :
Actual width ÷ 9/5
Actual width = 4.5 = 4 1/2 = 9/2
9/2 * 5 /9
= 5 /2
= 2 1/2 inches = 2.5 inches
Kristen's financial advisor has given her a list of 8 potential investments and has asked her to select and rank her favorite four. In how many different ways can she do this?
The number of ways in which Kristen can rank her favorite four from 8 using permutations is 1680.
The permutation is a way of finding the number of ways of selecting a set of articles from a larger set of articles, with the order of selection being significant.
If we want to choose r items from n items, where the order of selection is significant, then we can find the number of ways of doing this using the permutation as follows:
nPr = n!/{(n - r)!}.
In the question, we are asked to find the number of ways Kristen can rank her favorite four investments from the 8 potential investments that her financial advisor has given her.
Thus, using permutations, we need to select 4 items from 8 items, with order of selection being significant.
Substituting n = 8, and r = 4 in the formula, we get:
8P4 = 8!/{(8 - 4)!}
= 8!/4!
= 5 * 6 * 7 * 8
= 1680.
Thus, the number of ways in which Kristen can rank her favorite four from 8 using permutations is 1680.
Learn more about permutations at
https://brainly.com/question/12468032
#SPJ4
I Can’t figure these 3 questions out can someone help me please!
Answer:
Number 9 is 8, 8 is the length of each side
Step-by-step explanation:
8 x 8 = 64
And it s a square so all sides are equal
Answer: 8 feet long
Step-by-step explanation:
this is because a square has 4 sides that are all the same length
and the formula for area of a square is A = base x height
since you are given the height you would take the sqrt of 64 and get 8
8 x 8 = 64
Which orders have different information between the reports? select all that apply. 101 102 103
The order number that conveys a different information between the two analytical reports presented in tabular form is Order 102
How to find the difference between the reports?
The report that accompanies a similar question consists of two tabular forms of (analytical) reports, as follows;
Report 1.
Order. Stock # Qty
101. 27–671. 1
102. 27–781. 2
103. 27–090. 3
Report 2.
Order. Stock # Qty
101. 27–671. 1
102. 27–783. 2
103. 27–090. 3
From the above reports, by examination, we have at order 102
Stock number (Stock #) for Order 102 in Report 1 = 27–781
Stock number (Stock #) for Order 102 in Report 2 = 27–783
Therefore;
The order(s) that have (has) a different information between the reports is; Order 102
The correct option is therefore;
102Learn more about analytical reports here:
https://brainly.com/question/10549036
#SPJ1
f(x)=11x−3ln(x),x>0 (A) List all critical numbers of f. If there are no critical values, enter 'NONE'. Critical numbers = B) Use interv. cate where f(x) is increasing. lote: Use "IN or −[infinity], and use ' U ' for the union symbol. C) Use interval notation to indicate where f(x) is decreasing. ecreasing: List the x-coordinates of all local maxima of f. If there are no local maxima, enter 'NONE'. values of local maxima = List the x-coordinates of all local minima of f. If there are no local minima, enter 'NONE'. values of local minima = Use interval notation to indicate where f(x) is concave up. incave up: List the x values of all inflection points of f. If there are no inflection points, enter 'NONE'. ilues of inflection points = ph Complete: e: You can earn partial credit on this problem.
The function \(\(f(x) = 11x - 3\ln(x)\)\) has critical numbers at \(\(f(x) = 11x - 3\ln(x)\)\) and x = e. The function is increasing on the intervals \(\((0, \frac{3}{11})\)\) and \(\((e, +\infty)\)\). It is decreasing on the interval \(\((\frac{3}{11}, e)\)\). There are no local maxima or minima for this function.
The function is concave up on the interval (0, e) and concave down on the interval \(\((e, +\infty)\)\). There are no inflection points for this function.
To find the critical numbers of a function, we need to find the values of x where the derivative of the function is either zero or undefined. The derivative of f(x) is \(\(11 - \frac{3}{x}\)\), which is undefined when x = 0 and zero when \(\(x = \frac{3}{11}\)\). Additionally, the derivative is never zero for x > 0 except at \(\(x = \frac{3}{11}\)\). Therefore, the critical numbers are \(\(x = \frac{3}{11}\)\) and x = e.
To determine where the function is increasing or decreasing, we examine the sign of the derivative. The derivative is positive on the intervals where it is defined and positive, indicating that the function is increasing on those intervals. Thus, the function is increasing on \(\((0, \frac{3}{11})\)\) and \(\((e, +\infty)\)\), and decreasing on \(\((\frac{3}{11}, e)\)\).
Since the function does not have any local maxima or minima, there are no x-coordinates to list for local maxima and minima.
To determine where the function is concave up or concave down, we examine the sign of the second derivative. The second derivative of f(x) is \(\(\frac{3}{x^2}\)\), which is positive for \(\(x > 0\)\), indicating that the function is concave up on the interval (0, e), and concave down on the interval \(\((e, +\infty)\)\).
Finally, the inflection points occur where the concavity changes. Since the second derivative is always positive, there are no inflection points for this function.
To learn more about function refer:
https://brainly.com/question/30719383
#SPJ11
12 % By 6 • 2 or
12 % (6 • 2 )
Which one have
greater value
Answer:
12% by 6° 2
Step-by-step explanation:
Thats the greater value
Just brainliest me
(Excel Function)What excel function is used when deciding rejecting or failing to reject the null hypothesis?
The Excel function used when deciding to reject or fail to reject the null hypothesis is the T.TEST function.
This function is used to calculate the probability of obtaining the observed results or more extreme results, assuming that the null hypothesis is true. If the probability, also known as the p-value, is less than the significance level, typically 0.05, the null hypothesis is rejected, and it is concluded that there is sufficient evidence to support the alternative hypothesis.
Otherwise, if the p-value is greater than the significance level, the null hypothesis is not rejected, and it is concluded that there is not enough evidence to support the alternative hypothesis.
The p-value is the probability of obtaining a test statistic as extreme or more extreme than the observed value, assuming that the null hypothesis is true. If the p-value is less than or equal to the level of significance (alpha) chosen for the test, typically 0.05 or 0.01, then the null hypothesis is rejected in favor of the alternative hypothesis. If the p-value is greater than the chosen alpha level, then the null hypothesis is not rejected.
To learn more about Excel, click here:
https://brainly.com/question/29784728
#SPJ11
a fleet of nine taxis is to be dispatched to three airports in such a way that four go to airport a, four go to airport b, and one goes to airport c. in how many distinct ways can this be accomplished?
There are 504 multiple ways to go about doing something. the probability that perhaps a specific event (or group of events) would happen.
either as a range between 0 and 100% or even as a percentage on either a line plot between 0 (impossibility) to 1 (certainty).
THE PROCEDURE IS HERE.
The three airports will each receive a fleet of nine taxis.
Three people travel to airport A, five to airport B, and one to airport C.
There are several different methods that this can be done, including:
(9C3) (6C5) (1C1)
(84) (6) (1) (1)
= 504
The result is that this could be done in 504 different ways.
Based on the probability equation, the likelihood that a will take place is related to the ratio of favorable outcomes to all outcomes. Amount of favorable outcomes/Total Number of outcomes determines the probability that an event will occur, P(E).
To know more about equation click here
brainly.com/question/15525426
#SPJ4
Look at the stem and leaf plot. What is the mode of the numbers?
Answer:
Step-by-step explanation:
Mode is the one that occurs the most.
Stem is first number repeated for leaf
so your list of numbers is
10,12,12,22,23,24,30
The one that occurs the most is 12. So your mode is 12.
If there are multiple numbers that are "most" then there is no mode.
Can someone help, I swear this is easy but I’m pretty sure I’m overthinking this and I’m going to have a breakdown!!!LOLZ
Hey there! I'm happy to help!
A translation is just when they are staying the same. You just move the figure along but it doesn't switch the way it is facing.
A reflection is when it is like going over a mirror. It's kind of like it rolls over. So if you are facing left on the ground and you roll over then you are facing the right. That's basically what a reflection is.
A rotation is pretty self explanatory, it's when you twist it sideways, upside down, etc. A rotation can also end up in the same position as a reflection. For example if you diagonally reflect something it is the same as a 180 degree rotation, and that might be what is stressing you out.
With your answers, I'm assuming each number has all three possible answers, so if one seems to have both, just see which answer you haven't used yet.
1) Rotation, Translation Reflection
2) Rotation, Reflection, Translation
3) Translation, Rotation, Reflection
4) Rotation, Reflection, Translation
5) Reflection, Rotation, Translation
6) Reflection, Rotation, Translation
Have a wonderful day and keep on learning! :D
h(x) = x^2 + 2 - x
g(x) = 4x + 5
find (h - g) (x/3)
Answer:
x^2 - 15x - 27
---------------------- (Answer C)
9
Step-by-step explanation:
(h - g)(x) is the difference between funcions h and g. Subtract g(x) from h(x) as follows:
x^2 + 2 - x
-(4x + 5)
-------------------
x^2 - 5x - 3 = (h - g)(x)
To find (h - g)(x/3), substitute x/3 for x in x^2 - 5x - 3 = (h - g)(x), obtaining:
(x/3)^2 - 5(x/3) - 3
We must expand this and then combine like terms:
x^2/9 - (5/3)x - 3
The LCD of these three terms is 9. The first term stays as is. The second term becomes (15/9)x. The third term becomes 27/9.
Combining these three terms, all with denominator 9, we get:
x^2 - 15x - 27
----------------------
9
This matches Answer C.
pls help out and explain. 20 points!!
Answer:
First option is the correct answer
y = 4x + 5
Step-by-step explanation:
Hope it helps you in your learning process.
1. 6(3a+4)=12a
- find a
2. 5(4c-9)=25
- find c
3. 2x²-x-1=0
- find x
Answer:
a = - 4
c = 7/2
x = 1, -1/2
Step-by-step explanation:
1) 6(3a+4) = 12a
3a +4 = 2a
a = -4
2) 4c -9 = 5
4c = 14
c = 7/2
3) 2x² - x -1=0
2x² -2x +x -1 =0
2x(x -1)+1(x-1)=0
X = 1 or -1/2
There are 3 cards in Box A and 3 cards in Box B.
There is a number on each card.
Box A
3,4,5
Box B
9,2,3
Ryan takes at random a card from Box A and a card from Box B.
He adds together the numbers on the two cards to get a total score.
Work out the probability that the total score is an odd number.
Answer:
4/9Step-by-step explanation:
Possible number of pairs of given cards:
3*3 = 9Number of sums with odd score, two odd numbers added to an even number from each box:
2*1 + 1*2 = 4 (pairs of 3 and 5 with 2 or pairs of 9 and 3 with 4)Required probability:
P(odd) = 4/9David hikes 2 1⁄4 miles in 1/2 an hour. At this rate, how long will it take him to walk 18 miles?
Answer:
4 hours
Step-by-step explanation:
you would take 2 1/4 and multiply it by 8 (hours) to get 18
-3x squared plus 5= 10 solve for x
Answer:
\( x = \pm i\sqrt{\dfrac{5}{3}} \)
Step-by-step explanation:
\( -3x^2 + 5 = 10 \)
\( -3x^2 = 5 \)
\( x^2 = -\dfrac{5}{3} \)
\( x = \pm i\sqrt{\dfrac{5}{3}} \)
A recipe calls for 4 cups of flour and 2 cups of sugar. What is the ratio of flour to sugar in simplest form
the ratio of flour to sugar is:
flour : sugar= 4 : 2 = 2 : 1
Answer:
2:1, 2 to 1, or 2/1
Step-by-step explanation:
Devide 4 and the two by two and it makes it 2:1
Solve the system of equations:
y= 2x - 2
y= x2 - x-6
O A. (-1,-5) and (4,2)
O B. (0, -2) and (2, 2)
O C. (-1,-4) and (4, 6)
D. (-2,0) and (3,0)
Answer:
C) (-1, -4) and (4, 6)
Step-by-step explanation:
\(\textsf{Equation 1}:y=2x-2\)
\(\textsf{Equation 2}:y=x^2-x-6\)
Substitute Equation 1 into Equation 2 and solve for x:
\(\implies 2x-2=x^2-x-6\)
\(\implies x^2-3x-4=0\)
Find two numbers that multiply to -4 and sum to -3: -4 and 1
Rewrite the middle term as the sum of these two numbers:
\(\implies x^2-4x+x-4=0\)
Factorize the first two terms and the last two terms separately:
\(\implies x(x-4)+1(x-4)=0\)
Factor out the common term \((x-4)\):
\(\implies (x+1)(x-4)=0\)
\(\implies (x+1)=0 \implies x=-1\)
\(\implies (x-4)=0 \implies x=4\)
Substitute the found values of x into Equation 1 and solve for y:
\(x=-1 \implies y=2(-1)-2=-4\)
\(x=4 \implies y=2(4)-2=6\)
Therefore, the solution to the system of equations is:
(-1, -4) and (4, 6)
In a random sample of people, the mean commute time to work was minutes and the standard deviation was minutes. Assume the population is normally distributed and use a t-distribution to construct a % confidence interval for the population mean. What is the margin of error of ? interpret the results.
The margin of error is 3.083 min
Margin of Error: The margin of error is the range of error permitted around the sample statistic in order to estimate the population parameter. The margin of error indicates the size of the confidence interval. The breadth of the confidence interval increases with the margin of error.
Sample size, n=24
Sample mean, ¯x=31.5 min
Sample standard deviation, s=7.3 min
Confidence level, c=95%
=0.95
From the given information we can calculate the below-required quantities,
Significance level, α=1−c=1−0.95=0.05
Degrees of freedom, DOF=n−1
=24−1
=23
Now from the t-distribution table,
The value of t (α2, DOF) is,
t (0.025,23) = 2.069
Hence the margin of error will be,
MOE= t (α2, DOF) × s/√ n
=2.069×7.3/√24
=3.083 min
i. The upper limit of the confidence interval will be,
UL=¯x + MOE=31.5+3.083=34.583
The lower limit of the confidence interval will be,
LL=¯x−MOE
=31.5−3.083
=28.417
Hence, the 95% confidence interval is (28.417,34.583)
(28.417,34.583)
The answer is 28.417,34.583
ii. The required answer is MOE=3.083 min
ii. We have found the 95% confidence interval for the population mean to be (28.417,34.583). This means with 95 % confidence; it can be said that the population mean commute time is between the bounds of the confidence interval.
To learn more about margin of error. Click, https://brainly.com/question/6979326
#SPJ4