The standard error of the mean is approximately 0.671 hours.
Assuming samples of size 20 are taken, we can calculate the standard error of the mean (SE) using the formula:
SE = σ / √n
where σ is the population standard deviation and n is the sample size.
In this case, the population standard deviation is 3 hours and the sample size is 20. Plugging these values into the formula, we get:
SE = 3 / √20 ≈ 0.671
Therefore, the standard error of the mean is approximately 0.671 hours.
The standard error of the mean provides an estimate of the variability of sample means around the true population mean. It represents the average amount by which sample means are expected to differ from the population mean. In this case, with a standard error of approximately 0.671 hours, we can expect the sample means of children's television viewing time to vary around the population mean of 25 hours by about 0.671 hours.
To know more about sample mean, visit:
https://brainly.com/question/14287083
#SPJ11
1. 1. Under a dilation
of scale factor 2 with the center at the origin, if S (6, 7), what will
be the coordinates of the point S'?
2. What is the scale factor of the group dilation (with center at the origin) if point E (5,3)
becomes E' (15,9)?
3. Under a dilation of scale factor 5 with the center at the origin, if M (3,6), what will be
the coordinates of the point M'?
4. What is the scale factor of the dilation (with center at the origin) if point H (4,6)
becomes H' (24, 36)?
5. Under a dilation of scale factor 4 with the center at the origin, if J (2, 3), what will be
the coordinates of the point J'?
6. What is the scale factor of the dilation (with center at the origin) if point U (5,7)
becomes U' (25, 35)?
7. Under a dilation of scale factor 7 with the center at the origin, if K (5,6), what will be
the coordinates of the point K'?
8. What is the scale factor of the dilation (with center at the origin) if point A (4,5)
becomes A' (16, 20)?
a person invested $7400 in an account growing at a rate allowing the money to double every 13 years. how much money would be in the account after 11 years, to the nearest dollar?
Answer:
$13,304
-We use the compound interest function to determine the rate of growth.
-Given that the amount doubles in 13 years, the annual growth rate is calculated as:
We now substitute this value of i in the compound interest formula equation to solve for future value:
Hence, the future value to the nearest dollar is $13,304
*You can alternatively use the exponential growth function:
This is slightly off by just $1
Step-by-step explanation:
At which root does the graph of f x x 4 6 * x 7 5 cross the X axis?
The graph of the function f(x) = x^4 - 6*x^7 + 5 crosses the x-axis at x = 0 and x = 5.
The graph of the function f(x) = x^4 - 6*x^7 + 5 is a polynomial function. The roots of a polynomial are the values of x for which the polynomial is equal to zero. To find the roots of the polynomial, we must solve the equation f(x) = 0. To solve this equation, we will use polynomial division.
We will divide the polynomial by (x - 5), which will give us the following result:
f(x) = x^4 - 6*x^7 + 5 = (x - 5)(x^3 + 7x^2 - 5x + 25).
We can now solve for the roots of the polynomial. Since (x - 5) is a factor of the polynomial, the root is x = 5. We can also solve for the other roots by setting the remainder of the polynomial division equal to 0. This gives us the equation x^3 + 7x^2 - 5x + 25 = 0. This equation can be solved by factoring and the result is x = 0, 1, and 5. Therefore, the graph of f(x) = x^4 - 6*x^7 + 5 crosses the x-axis at x = 0 and x = 5.
f(x) = x^4 - 6*x^7 + 5
Divide f(x) by (x-5):
f(x) = (x-5)*(x^3 + 7x^2 - 5x + 25)
Set remainder equal to 0:
x^3 + 7x^2 - 5x + 25 = 0
Factor:
x^3 + 7x^2 - 5x + 25 = (x - 5)*(x^2 + 5x + 5)
x = 0, 1, 5
Learn more about function here
https://brainly.com/question/29633660
#SPJ4
Tom sold t-shirts and hats at a festival. He made a $5 profit for each t-shirt he sold. He also made a profit of $40 from selling hats. If he made a total profit of $125, how many t-shirts did he sell?
The total number of t-shirts sold by Tom equals to 17 t-shirt.
What is a profit?Basically, a profit refers to the difference between the revenue that an entity has received from its outputs and the opportunity costs of its inputs.
We need to note that he made a total profit of $125. From here, we will proceed to use that data to solve other sections.
From the total profit of $125, he also made a profit of $40 from selling hats. That means that the T-shirt sales alone gives him a profit of $85 ($125 - $40).
Total quantity of t-shirt sold is computed as follows:
= Total profit from t-shirt / Profit per shirt
= $85 / $5
= 17 t-shirt
Read more about profit
brainly.com/question/1078746
#SPJ1
pls hurry. 10. Select all numbers that represent a solution of the equation below.
\(x^2=196\\x=-\sqrt{196} \vee x=\sqrt{196}\\x=-14 \vee x=14\)
Therefore, it's A and D.
Help? and please make sure it’s right :)
Answer:
x=7
Step-by-step explanation:
180-105= 75°
11x-2=75°
11x=77
x=7
if i have 4 times the money of my brother. our totl is d dollars. how much money do each of us have?
Slope -1 and Point (7, 4)
PLEASE HELP MY MOM WILL KILL ME IF I FAIL
Answer:
y = -1x + 11 OR y = -x + 11
Step-by-step explanation:
y = mx + b
y = -1x + 11 OR y = -x + 11
USE PATHWAY !!
HOPE IT HELPS!!!
BYEEE
A city has a population of 370,000 people. Suppose that each year the population grows by 6.5%. What will the population be after 12 years?
Use the calculator provided and round your answer to the nearest whole number.
Answer:
I think the answer is 787765.609372 which rounds to 787766.
I hope this helped
Answer:
658,600 after 12 years
Step-by-step explanation:
Convert 6.5% into the decimal: 0.065Multiply the current population by the decimal: 370,000(0.065)=24,050Multiply 24,050 by 12 years: 24,050(12)= 288,600Add the answer to the current population: 370,000+288,600= 658,600That should be correct I think
Anand needs to hire a plumber. He's considering a plumber that charges an initial fee of \$65$65dollar sign, 65 along with an hourly rate of \$28$28dollar sign, 28. The plumber only charges for a whole number of hours. Anand would like to spend no more than \$250$250dollar sign, 250, and he wonders how many hours of work he can afford. Let HHH represent the whole number of hours that the plumber works.
Answer:
Anand can afford is 6hoursStep-by-step explanation:
Let H represent the whole number of hours that the plumber works.
given that the fixed cost is $65
and the hourly cost is $28
also given that Anand has a total of $250 with him
the total cost can be expressed in terms of the number of hours H as
250=65+28H
we can now solve for H
250-65=28H
185=28H
divide both sides by 28
H=185/28
H=6.60714285714
"The plumber only charges for a whole number of hours."
So the number of hours Anand can afford is 6hours
Answer:
Anand can afford is 6hours
Step-by-step explanation:
Let H represent the whole number of hours that the plumber works.
given that the fixed cost is $65
and the hourly cost is $28
also given that Anand has a total of $250 with him
the total cost can be expressed in terms of the number of hours H as
250=65+28H
we can now solve for H
250-65=28H
185=28H
divide both sides by 28
H=185/28
H=6.60714285714
"The plumber only charges for a whole number of hours."
So the number of hours Anand can afford is 6hours
HELP QUICK WILL GIVE BRAINLIEST
Answer:
y = mx + b is the slope intercept form of writing the equation of a straight line
Step-by-step explanation:
y = mx + b is the slope intercept form of writing the equation of a straight line. In the equation 'y = mx + b', 'b' is the point, where the line intersects the 'y axis' and 'm' denotes the slope of the line. The slope or gradient of a line describes how steep a line is.
HELP US! A middle school dance team held a carwash and recorded the following donations received during the first two hours. $25, $32, $35, $10, $18, $48, $45, $20, $15, $12
Part A: Describe the five-number summary of the data set. Then explain what each value represents in the context of the problem.
Part B: Which of the box plots shown represents the data set? Explain why you chose it using what you found in Part A.
- Karl and Tommy
Part A
Minimum: the minimum value in the data set is $10.
First Quartile (Q1): the first quartile is $15
Median (Q2): the median is $ 22.5
How to describe the the summaryPart A: the data set in array is
$10, $12, $15, $18, $20, $25, $32, $35, $45, $48
Minimum: the minimum value in the data set is $10. This represents the lowest donation received during the first two hours of the carwash.
First Quartile (Q1): the first quartile is the median of the lower half of the data set. In this case, it is $15. This means that 25% of the donations were $15 or less.
Median (Q2): the median is the middle value of the data set when arranged in ascending order. In this case, it is $(20 + 25)/2 = $ 22.5
Third Quartile (Q3): The third quartile is the median of the upper half of the data set. In this case, it is $35. This means that 75% of the donations were $35 or less.
Maximum: The maximum value in the data set is $48. This represents the highest donation received during the first two hours of the carwash.
Part B:
Box plot B matched the data set given because the part corresponds to the data set
Learn more about data set at
https://brainly.com/question/28168026
#SPJ1
For question #3:A) Express the general solution of the given system of equations in terms of real-valued functions.B) Also, draw a direction field, sketch a few of the trajectories, and describe the behavior of the solutions as t approachs infinity.
The solutions of the system tend towards zero, as the exponential term dominates the other terms.
The general solution of the given system of equations can be expressed as:
x(t) = c1e^(-t) + c2te^(-t)
y(t) = c3e^(-t) + c4te^(-t)
where c1, c2, c3 and c4 are constants of integration.
The direction field of the system can be drawn by plotting the slopes of the two equations at each point. The trajectories of the solutions can be sketched by plotting the solutions of the system at different points in time. As t approaches infinity, the solutions of the system tend towards zero, as the exponential term dominates the other terms.
Learn more about exponential term here:
https://brainly.com/question/28200739
#SPJ4
the density of a certain material is such that it weighs 3 grams per fluid ounce of volume. express this density in ounces per liter. round your answer to the nearest hundredth.
The density in ounces per liter is 3.57826 rounding off = 3.58
Density of a substance can be defined as a relationship between the mass and the volume of that substance.
\(Density=\frac{Mass}{Volume}\)
For Example if a metal have a mass 0f 7gm and volume as \(5cm^{3}\)
\(Density=\frac{7}{5} = 1.4g/cm^{3}\)
we know that 1 gram/fluid ounce of volume = 1.19275 ounces/liter
1 gm/fluid ounce =1.19275 ounces/liter
3 gm/fluid ounce = 3*1.19275 ounces/liter
So 3 gm/fluid ounce = 3.57826 ounces/liter
On rounding it to nearest hundredth we get 3.58 ounces/liter
Therefore the density of the material which weighs 3 gm/fluid ounce in ounces/liter is 3.58.
Learn more about Density here https://brainly.com/question/17294683
#SPJ4
Solve for the expression. 3 1/5x3/5
Answer:
1 23/25
Step-by-step explanation:
3 1/5 * 3/5
Change the mixed number to an improper fraction
(5*3+1 )/5 = 16/5
16/5 * 3/5 = 48/25
Change to a mixed number
25/25 + 23/25
1 23/25
Answer:
1 23/25
Step-by-step explanation:
turn the mixed number into an improper fraction : 16/5, then multiply straight across: 16/5 x 3/5 = 23/25
Find the number of sides of a regular polygon whose each interior angle is 150 degree ...pls give step by step explaination
Answer:
12
Step-by-step explanation:
the angle is defined by equation ((n-2)*180)/n,where n is number of sides of a regular polygon
so here 180n-360=150n
30n=360
n=12
Help me please !!!!!
Answer:
option B
Step-by-step explanation:
Answer:
the answer is d (the last one).
pq= -10 x 4= -40 (lowest value)
p-q= -10 - 4= -14 (middle value)
p+q= -10 + 4= -6 ( highest value)
If a number is a natural number then it is also a whole number I need the inverse converse contra positive and biconditional and truth value
Inverse = if a number is not a natural number the it also not a whole number.
False
Converse = If a number is a whole number then it is also a natural number
False
Contrapositive = If a number is not a whole number then it is also not a natural number
True.
Bi conditional = number is a natural number if and only of it is a whole number.
False.
A cafe makes ten 8-ounce fruit smoothies. Each smoothie is made with 4 ounces of soy milk and 1.3 ounces of banana flavoring. The rest is blueberry juice. How much of each ingredient will be necessary to make the smoothies?
Answer:
27 ounces of blueberry juice. 40 ounces of soy milk. 13 ounces of banana flavoring.
Step by Step:
4 + 1.3 = 5.3, This is how much of the smoothie is made up of the soy milk and banana flavoring, 5.3 ounces.
So to find the amount of blueberry juice in the smoothie you have to subtract 8-5.3. This finds the remaining part of the smoothie, which is the blueberry juice. 8-5.3 = 2.7
2.7 ounces of blueberry juice in each smoothie.
Now you have to multiply every ingredient by 10, since there are 10 smoothies.
4 * 10 = 40
1.3 * 10 = 13
2.7 * 10 = 27
You need 40 ounces of soymilk, 13 ounces of banana flavoring, and 27 ounces of blueberry juice to make 10, 8-ounce smoothies.
Gordon irons some shirts for staff at a hotel.
The total weight of these shirts is 9. 5 kg.
Each shirt weighs 190 g.
Gordon charges £38 to iron these shirts.
He sees this advert for ironing in a newspaper.
Ironing Palace
Shirts
90p each
Gordon thinks he charges less to iron these shirts than the Ironing Palace would
charge.
Is Gordon correct?
As per the unitary method, Gordon is correct because the Gordon would charge more than Ironing Palace
In math the term unitary method is defined as the value of a single unit and then find the value of more or fewer units by multiplying their quantity with the value of a single unit.
Here we have given that the total weight of these shirts is 9. 5 kg.
And here we have also given that each shirt weighs 190 g.
And Gordon charges £38 to iron these shirts.
And the charges in the Ironing Palace is 90p for each.
Here we have to use the unitary method to calculate the values for each of them,
The Total cost for Gordon is calculated as,
=> 38 x (9.5 / 0.19)
=> 1900
And the total cost for Ironing Palace is calculated as,
=> 90 x 9.5
=> 855
Therefore, while we looking into the values we have identified that Gordon is correct.
To know more about Unitary method here
https://brainly.com/question/28276953
#SPJ4
Enzo drew Triangle K L N. In Enzo's triangle, Measure of angle K is represented as x degrees. The measure of Angle L is 5 times Measure of angle K. The measure of Angle N is 16 degrees less than 8 times Measure of angle K. Which statements must be true about the angle measures of Enzo's triangle? Check all that apply. Measure of angle K = x degrees Measure of angle L = (5 x) degrees Measure of angle N = (16 minus 8 x) degrees Measure of angle K + measure of angle L = measure of angle N Measure of angle K + measure of angle L + measure of angle N = 180 degrees
Answer: (1) Measure of angle K = x degrees
(12) Measure of angle L = (5x) degrees
(3) Measure of angle k + Measure of angle L + Measure of angle N = 180 degrees
Step-by-step explanation: First of all, what we have is a triangle, and one of the properties of a triangle is all three angles add up to 180 degrees. This simply means that the addition of angles K and L and N would be equal to 180 degrees.
The question states that angle K is represented as x degrees, and angle L is 5 times the measure of angle K. Therefore, if K is x degrees, then L is 5 times x, which becomes 5x degrees. Also, angle N is given as 16 degrees less than 8 times the measure of angle K (x degrees). Eight times the measure of angle K is given as 8x. Sixteen degrees less than 8x would now become, 8x - 16 (degrees). Therefore, the angles have been derived as;
Angle K = x degrees
Angle L = 5x degrees
Angle N = 8x - 16 degrees
Having known that one of the properties of any triangle is all angles adding up to 180 degrees, we can now derive the following equation;
x + 5x + 8x - 16 = 180
14 x - 16 = 180
Add 16 to both sides of the equation
14x = 196
Divide both sides of the equation by 14
x = 14
Therefore, angle K = 14 degrees (x), angle L = 70 degrees (5x) and angle N = 96 degrees (8x - 16)
*14 + 70 + 96 = 180*
Answer:
145
Step-by-step explanation:
. How many days will it take for $9500 to earn $800 at 8.25% p.a.?
It will take approximately 39.532 days for $9500 to earn $800 at an annual interest rate of 8.25%.
To find the number of days it will take for $9500 to earn $800 at an annual interest rate of 8.25%, we need to use the formula for simple interest:
Interest = Principal * Rate * Time
In this case, we are given the interest ($800), the principal ($9500), and the annual interest rate (8.25%). We need to solve for time.
Let's denote the time in years as "t". Since we're looking for the number of days, we'll convert the time to a fraction of a year by dividing by 365 (assuming a standard 365-day year).
$800 = $9500 * 0.0825 * (t / 365)
Simplifying the equation:
800 = 9500 * 0.0825 * (t / 365)
Divide both sides by (9500 * 0.0825):
800 / (9500 * 0.0825) = t / 365
Simplify the left side:
800 / (9500 * 0.0825) ≈ 0.1083
Now, solve for t by multiplying both sides by 365:
0.1083 * 365 ≈ t
t ≈ 39.532
Therefore, it will take approximately 39.532 days for $9500 to earn $800 at an annual interest rate of 8.25%.
for such more question on annual interest rate
https://brainly.com/question/29451175
#SPJ8
If P(A) = .46 and P(B) = .17 and P(A U B) = .63, then A and B are:
Select one:
a. mutually exclusive
b. collectively exhaustive
c. statistically independent
d. mutually exclusive and collectively exhaustive
e. none of the above/can’t be determined with info given
The answer is e. none of the above/can’t be determined with info given.
Based on the information given, we have:
P(A) = 0.46
P(B) = 0.17
P(A U B) = 0.63
Note that P(A U B) represents the probability of either event A or event B occurring, or both.
If events A and B are mutually exclusive, it means they cannot occur at the same time. In other words, if event A occurs, event B cannot occur, and vice versa. In this case, the probability of both events occurring would be zero.
On the other hand, if events A and B are collectively exhaustive, it means that together they account for all possible outcomes. In other words, either event A or event B (or both) must occur, and there are no other possibilities.
Using these definitions, we can see that events A and B are neither mutually exclusive nor collectively exhaustive. This is because the probability of both events occurring (i.e., the intersection of A and B) is not zero, which means they are not mutually exclusive. Additionally, the probability of either A or B occurring (i.e., the union of A and B) is not equal to one, which means they are not collectively exhaustive.
Know more about probability here:
https://brainly.com/question/31828911
#SPJ11
Which linear inequality is represented by the graph?
Answer:
Wow
Step-by-step explanation:
I love the question pls i also want to know the answer to it
A 6 ounce serving of salmon has the following: 200 kcals, 31 grams of protein, 7 grams of fat and 2 grams of saturated fat. What percentage of saturated fat is found in this serving of salmon
A 6-ounce serving of salmon has 2 grams of saturated fat. To determine the percentage of saturated fat in the serving of salmon, we divide the amount of saturated fat by the total amount of fat and multiply by 100.
The total amount of fat in the serving is 7 grams. So:2g / 7g × 100% = 28.57%Therefore, 28.57% of the 6-ounce serving of salmon is saturated fat. This information can be helpful for individuals who are monitoring their saturated fat intake due to health concerns such as high cholesterol or heart disease.
Saturated fat is a type of fat that is solid at room temperature and is typically found in animal products such as meat and dairy. Consuming too much saturated fat can contribute to high cholesterol levels and increase the risk of heart disease. It is important to consume a balanced diet and limit intake of saturated and trans fats.
Know more about Saturated fat here:
https://brainly.com/question/1986175
#SPJ11
Exercise 4.5.6. Let f : [0, 1] → R be continuous with f(0) = f(1). (a) Show that there must exist x, y ∈ [0, 1] satisfying |x − y| = 1/2 and f(x) = f(y). (b) Show that for each n ∈ N there exist xn, yn ∈ [0, 1] with |xn − yn| = 1/n and f(xn) = f(yn). (c) If h ∈ (0, 1/2) is not of the form 1/n, there does not necessarily exist |x − y| = h satisfying f(x) = f(y). Provide an example that illustrates this using h = 2/5.
For h = 2/5, there does not exist |x - y| = h satisfying f(x) = f(y) for the function f(x) = x.(a) To show that there must exist x, y ∈ [0, 1] satisfying |x - y| = 1/2 and f(x) = f(y),
we can utilize the Intermediate Value Theorem (IVT).
Since f is continuous on [0, 1], and f(0) = f(1), according to the IVT, for any value c between f(0) and f(1), there exists a value x ∈ [0, 1] such that f(x) = c.
Let c = f(0) = f(1). By the IVT, there exists x1 ∈ [0, 1] such that f(x1) = c. Now, consider the value y1 = x1 + 1/2. Since x1 ∈ [0, 1], y1 is also in the interval [0, 1]. Moreover, |x1 - y1| = |x1 - (x1 + 1/2)| = 1/2.
Therefore, we have found x = x1 and y = y1 satisfying |x - y| = 1/2 and f(x) = f(y).
(b) To show that for each n ∈ N there exist xn, yn ∈ [0, 1] with |xn - yn| = 1/n and f(xn) = f(yn), we can generalize the approach used in part (a). Let c = f(0) = f(1) and consider the interval [0, 1]. Divide this interval into n subintervals of length 1/n. By the IVT, in each subinterval, there exists a value xi such that f(xi) = c.
Now, consider the value yi = xi + 1/n. Similar to part (a), |xi - yi| = 1/n.
By repeating this process for each subinterval, we can find xn, yn ∈ [0, 1] such that |xn - yn| = 1/n and f(xn) = f(yn) for any given n.
(c) For h = 2/5, which is not of the form 1/n, it is not guaranteed that there exists |x - y| = h satisfying f(x) = f(y). To provide an example, consider the function f(x) = x on the interval [0, 1].
Suppose we want to find x and y such that |x - y| = 2/5 and f(x) = f(y). Since f(x) = x, we need to find x and y such that |x - y| = 2/5 and x = y.
However, it is not possible to satisfy both conditions simultaneously. If x = y, then |x - y| = 0, which is not equal to 2/5. On the other hand, if |x - y| = 2/5, then x and y must be distinct, making it impossible to have x = y.
Therefore, for h = 2/5, there does not exist |x - y| = h satisfying f(x) = f(y) for the function f(x) = x.
Learn more about interval here: brainly.com/question/32278466
#SPJ11
between which two consecutive whole number does 65 squared lie
1. Find the Perimeter AND the Area of the following objects with the given coordinate
pairs:
(7,-5) (-5, 4) (-8, 0) (4, -9)
The value of perimeter of figure is,
⇒ 40 units
And, Area of figure is,
⇒ A = 75 units²
We have to given that,
The given coordinates pairs are,
⇒ A (7,-5), B (-5, 4), C (-8, 0) , D(4, -9)
Now, We know that,
The distance between two points (x₁ , y₁) and (x₂, y₂) is,
⇒ d = √ (x₂ - x₁)² + (y₂ - y₁)²
Hence, We get;
AB = √(- 5 - 7)² + (- 5 - 4)²
AB = √ 144 + 81
AB = √225
AB = 15
BC = √(- 8 + 5)² + (0 - 4)²
BC = √9 + 16
BC = √25
BC = 5
CD = √(4 + 8)² + (- 9 - 0)²
CD = √144 + 81
CD = √225
CD = 15
DA = √(4 - 7)² + (- 9 + 5)²
DA = √9 + 16
DA = √25
DA = 5
Hence, The value of perimeter of figure is,
⇒ 15 + 5 + 15 + 5
⇒ 40 units
And, Area of figure is,
A = Lenght x Width
A = 15 x 5
A = 75 units²
Learn more about the rectangle visit:
https://brainly.com/question/2607596
#SPJ1
YOU'RE A TOPG IF YOU HELP
What is the cos(C)? Select all that apply and show your work.
(1.) 15/25 ------------- (2.) .8 --------------- (3.) .75 ----------------- (4.) 20/25
(5.) .6 ----------------------- (6.) 15/20
Answer: I believe it is 15/25
Step-by-step explanation:
cos C = Adjacent/Hypotenuse
Cos c= 15/25
bicycle rental company charges a $5 flat fee plus $1.20 per hour. Select the expression that represents renting a bicycle for h hours. A. 5h + 120h B. (5 + 1.20)h C. 5 + 1.20h D. 5h + 1.20
Answer:
a
Step-by-step explanation: