Answer:
(2½,1)
Step-by-step explanation:
(-1+6/2,5+-3/2)
(5/2,2/2)
(2½,1)
I NEED HELPP MY EXAM
*which statement correctly compares the rates of change of the two functions?
Answer:
Exam??
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Function A) Rate of change is 6 because it represents 'm' from mx (6x).
Function B) Rate of change is 5 because there is an increase of 5 as it moves to the right.
Nolan rode his bicycle from his house to the store at a speed of 4.5 mph. If it took him 16 minutes to get there, how many miles is the store from Nolan's house.
Answer:
1.2mi
Step-by-step explanation:
16/60 x4.5=1.2 mi
EFGH is a square with diagonals EG and HF that intersects at O. What is the measure of m angle HOG
Answer:
90 degrees
Step-by-step explanation:
in a square the diagonals always intersect to form 90 degree angles.
An automobile manufacturer would like to know what proportion of its customers are not satisfied with the service provided by the local dealer. The customer relations department will survey a random sample of customers and compute a 95% confidence interval for the proportion who are not satisfied.
(a) Past studies suggest that this proportion will be about 0.17. Find the sample size needed if the margin of the error of the confidence interval is to be about 0.015. (You will need a critical value accurate to at least 4 decimal places.) Sample size:
(b) Using the sample size above, when the sample is actually contacted, 25% of the sample say they are not satisfied. What is the margin of the error of the confidence interval? MoE:
The margin of error for the confidence interval is approximately 0.014, indicating that the estimate of the proportion of dissatisfied customers could be off by approximately plus or minus 0.014. This means that we can be 95% confident that the true proportion of dissatisfied customers falls within the range of the estimated proportion ± 0.014.
(a) To find the sample size needed to achieve a margin of error of about 0.015 with a 95% confidence level, we can use the formula for sample size calculation for proportions:
n = (Z^2 * p * (1-p)) / E^2
Where:
n = sample size
Z = critical value (corresponding to the desired confidence level)
p = estimated proportion of the population
E = margin of error
In this case, the estimated proportion of dissatisfied customers is 0.17, and the desired margin of error is 0.015. Since we want a 95% confidence level, the critical value can be obtained from a standard normal distribution table. The critical value for a 95% confidence level is approximately 1.96.
Plugging these values into the formula, we have:
n = (1.96^2 * 0.17 * (1-0.17)) / 0.015^2
n ≈ 1901.63
Therefore, the sample size needed is approximately 1902.
(b) If 25% of the sample say they are not satisfied, we can calculate the margin of error using the following formula:
MoE = Z * sqrt((p * (1-p)) / n)
Where:
MoE = margin of error
Z = critical value (corresponding to the desired confidence level)
p = proportion of the sample
n = sample size
Using the same critical value of 1.96 for a 95% confidence level and plugging in the values:
MoE = 1.96 * sqrt((0.25 * (1-0.25)) / 1902)
MoE ≈ 0.014
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Find the perimeter of this shape
With solution please
Answer:
This one doesn't have all the requirements so it doesn't work out at least how do I understand it
Step-by-step explanation:
Which of the following are prime factors of both 24 and 42? Select all that apply.
Answer:
2 and 3
Step-by-step explanation:
So, 24=2x2x2x3
42=2x3x7
3 and 2
Answer:
2 and 3
Step-by-step explanation:
prime factors for 42: 2, 3, and 7
prime factors for 24: 2,2,2 and 3
x + 3y = 2
-x + 2y = 3
Can somebody help me?
How do the values compare? Order the values from least to greatest.
-1/2
| -2 |
| 1/2 |
| -2 1/2 |
- 2 1/2
1 1/2
The original perimeter of a rectangle is 30cm, if we enlarge it by a scale factor of 4
what is the new perimeter?
120
1920
480
Help needed ASAP will give brainliest! Pls help me
Answer:
1740 N
Step-by-step explanation:
To find the force, you need to multiply the mass by the acceleration.
(60.0 kg) × (29.0 m/s²) = 1740 N
The force will be 1740 N.
REPOST* which equation or inequality shows the relationship between the plotted points on the number line
A. -4 > 3
B. -4 > -3
C. 3 > -4
D. 3 < -4
Answer:
C
Step-by-step explanation:
3 is positive and -4 is negative, so 3 is to the right of 0 and -4 is to the left of 0
Houa's math teacher plots student grades on their weekly quizzes against the number of hours they say they study on the pair of coordinate axes and then draws the line of best fit. What does the point (5.5, 87.6) represent? 8 (5.5,87.6) 85 Quiz Score 80 65 50 45 O 8 00 O 0.5 1 1.5 2.5 3 3-5 Time Spent on Homework per Week (hours) 4-5 5 5.5 6
Solution:
Given that Houa's maths teacher plots grades of students against the number of hours they say they study on pair of coordinates, as shown below:
The point
\((5.5,\text{ 87.6\rparen}\)represents that a student who actually spent 5.5 hours studying and got a score of 87.6.
The
2/3x = 27 please help
question is givenin the photo given above
Step-by-step explanation:
In order to meet at point F, line DF must travel from the top line to the bottom line. If it crosses through E, the midway, that means that it is halfway to the bottom line. This means the distance D E is equal to E F, because both are the distance from midpoint E to one of the sides (top or bottom).
If D E and E F are equal length, then AB and BF must be the length as well, as it is the length DF line takes to get halfway down from the top. Since they are the same length, A F must be twice the length of AB.
Hope this helped!
If a population has 5261 members and you select a sample of 45 using systematio sampoling, what is the value of m ? 83 Calculate the IHD for each of the following molecular formulas: (a) C 6
H 6
; (b) C 6
H 5
NO 2
; (c) C 8
H 13
F 2
NO ;
(d) C 4
H 12
Si; (e) C 8
H 5
BrO; (f) C 4
H 6
O 3
S
Answer:
ok, here is you answer
Step-by-step explanation:
I'm sorry, but the first part of your question about systematic sampling is incomplete and unclear. Can you please provide more information or clarify the question?
For the second part of your question, to calculate IHD (index of hydrogen deficiency) for a molecular formula, you can use the formula:
IHD = (2n + 2 - x)/2
Where n is the number of carbons and x is the number of hydrogens and halogens (excluding fluorine).
Using this formula, we can calculate the IHD for each of the given molecular formulas:
(a) C6H6: n = 6, x = 6, IHD = 4
(b) C6H5NO2: n = 6, x = 7, IHD = 3
(c) C8H13F2NO: n = 8, x = 16, IHD = 4
(d) C4H12Si: n = 4, x = 12, IHD = 0
(e) C8H5BrO: n = 8, x = 6, IHD = 4
(f) C4H6O3S: n = 4, x = 6, IHD = 3
Therefore, the IHD for each of the given molecular formulas are: (a) 4, (b) 3, (c) 4, (d) 0, (e) 4, (f) 3.
mark me as brainliestWhen results from a scholastic assessment test are sent to test-takers, the percentiles associated with their scores are also given. Suppose a test-taker scored at the 68th percentile for their verbal grade and at the 27th percentile for their quantitative grade. Interpret these results. O A. This student performed better than 32% of the other test-takers in the verbal part and better than 73% in the quantitative part. OB. This student performed better than 32% of the other test-takers in the verbal part and better than 27% in the quantitative part. O C. This student performed better than 68% of the other test-takers in the verbal part and better than 73% in the quantitative part. OD. This student performed better than 68% of the other test-takers in the verbal part and better than 27% in the quantitative part.
This student performed better than 68% of the other test-takers in the verbal part and better than 27% in the quantitative part.
Given,
Test-taker scored at the 68th percentile for their verbal grade and at the 27th percentile for their quantitative grade .
Now,
68% percentile : 68% scores equal or less .
27% percentile : 27^ scored equal or less .
Thus option D
This student performed better than 68% of other test taker in verbal and better than 27% in quantitative part .
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If x² is =169, what is x-5?
Answer:
\(\sqrt{169}=13\)
\(13-5=8\)
NEED HELP ASAP!!!! PLEASE HELP!!!!
Answer:
1/9a
Step-by-step explanation:
i used math.way lm.ao hope it helps
Using Laplace Transforms, find the solution of the initial value problem: d²y +9y =9. sin(t). U(t - 3), = y(0) = y'(0) = 0 dx²
The solution to the given initial value problem, obtained using Laplace transforms, is y(x) = 0. This means that the function y(x) is identically zero for all values of x.
To find the solution of the initial value problem using Laplace transforms for the equation d²y/dx² + 9y = 9sin(t)u(t - 3), where y(0) = y'(0) = 0, we can follow these steps:
Take the Laplace transform of the given differential equation.
Applying the Laplace transform to the equation d²y/dx² + 9y = 9sin(t)u(t - 3), we get:
s²Y(s) - sy(0) - y'(0) + 9Y(s) = 9 * (1/s² + 1/(s² + 1))
Since y(0) = 0 and y'(0) = 0, the Laplace transform simplifies to:
s²Y(s) + 9Y(s) = 9 * (1/s² + 1/(s² + 1))
Solve for Y(s).
Combining like terms, we have:
Y(s) * (s² + 9) = 9 * (1/s² + 1/(s² + 1))
Multiply through by (s² + 1)(s² + 9) to get rid of the denominators:
Y(s) * (s⁴ + 10s² + 9) = 9 * (s² + 1)
Simplifying further, we have:
Y(s) * (s⁴ + 10s² + 9) = 9s² + 9
Divide both sides by (s⁴ + 10s² + 9) to solve for Y(s):
Y(s) = (9s² + 9)/(s⁴ + 10s² + 9)
Partial fraction decomposition.
To proceed, we need to decompose the right side of the equation using partial fraction decomposition:
Y(s) = (9s² + 9)/(s⁴ + 10s² + 9) = A/(s² + 1) + B/(s² + 9)
Multiplying through by (s⁴ + 10s² + 9), we have:
9s² + 9 = A(s² + 9) + B(s² + 1)
Equating the coefficients of like powers of s, we get:
9 = 9A + B
0 = A + B
Solving these equations, we find:
A = 0
B = 0
Therefore, the decomposition becomes:
Y(s) = 0/(s² + 1) + 0/(s² + 9)
Inverse Laplace transform.
Taking the inverse Laplace transform of the decomposed terms, we find:
L^(-1){Y(s)} = L^(-1){0/(s² + 1)} + L^(-1){0/(s² + 9)}
The inverse Laplace transform of 0/(s² + 1) is 0.
The inverse Laplace transform of 0/(s² + 9) is 0.
Combining these terms, we have:
Y(x) = 0 + 0
Therefore, the solution to the initial value problem is:
y(x) = 0
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A polling company has decided to increase the size of its random sample of voters from about 3,000 people to about 5,500 people right before an election. A poll was designed to estimate the proportion of voters who favor a new law banning all exterior doors from opening inward. What is the effect of this increase
Increasing the size of the random sample of voters from 3,000 to 5,500 right before an election has a positive effect on the accuracy and reliability of the poll's results. By expanding the sample size, the polling company can reduce sampling error and obtain a more representative and precise estimate of the proportion of voters favoring the new law.
When conducting a poll, the goal is to gather data that accurately reflects the opinions and preferences of the entire population. A larger sample size helps achieve this objective by providing a broader representation of the population. With a larger sample, the margin of error decreases, meaning the estimated proportion of voters favoring the new law is likely to be more accurate. This increase in sample size reduces the potential for bias and provides a more reliable estimate.
Moreover, a larger sample size enhances the statistical power of the poll, making it more sensitive to detecting differences or changes in the population's opinions. It allows for more precise estimates, narrower confidence intervals, and greater confidence in the validity of the poll's findings.
Overall, increasing the size of the random sample from 3,000 to 5,500 voters before an election improves the accuracy, reliability, and precision of the poll's estimate regarding the proportion of voters who favor the new law banning all exterior doors from opening inward.
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So the market is selling guns and their $100.50 but their half off what is the amount to buy a gun.
Answer:
50.25
Step-by-step explanation:
100.50/2=50.25
Answer:
50.25
explanation:
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Identify the solid from its net
triangular prism
rectangular prism
triangular pyramid
rectangular prism
Answer:
triangular pyramid
Step-by-step explanation:
Factor the expression.
\(\frac{2}{5}x^{\frac{5}{2} } +2x^{\frac{3}{2} }+14x^{\frac{1}{2} }\)
Answer:
Step-by-step explanation:
2/3 x is theg0d of the universe
assume that each of the n trials is independent and that p is the probability of success on a given trial. use the binomial probability formula to find p(x). n=5, x=3, p=0.3
The probability of getting exactly 3 successes (p(x)) in 5 independent trials, each with a probability of success (p) of 0.3, is approximately 0.1323, or 13.23%.
To find the probability of getting exactly x successes (p(x)) in n independent trials, each with a probability of success (p) using the binomial probability formula, we can follow these steps:
Step 1: Identify the values:
n = 5 (number of trials)
x = 3 (number of successes)
p = 0.3 (probability of success on a given trial)
Step 2: Apply the binomial probability formula:
The binomial probability formula is given by:
p(x) = (nCx) * (p^x) * ((1 - p)^(n - x))
Step 3: Calculate the values:
nCx represents the number of ways to choose x successes from n trials and can be calculated using the combination formula:
nCx = n! / (x! * (n - x)!)
In our case, n = 5 and x = 3, so:
nC3 = 5! / (3! * (5 - 3)!)
= 5! / (3! * 2!)
= (5 * 4 * 3!) / (3! * 2 * 1)
= (5 * 4) / (2 * 1)
= 10
Now we can substitute the values into the binomial probability formula:
p(3) = (10) * (0.3^3) * ((1 - 0.3)^(5 - 3))
= 10 * (0.3^3) * (0.7^2)
= 10 * (0.027) * (0.49)
= 0.1323
Step 4: Final Answer:
Therefore, the probability of getting exactly 3 successes (p(x)) in 5 independent trials, each with a probability of success of 0.3, is 0.1323, or approximately 13.23%.
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Cameron surveys every tenth student who walks into school to determine the favorite type of movie of students in his school. what is the population,sample,random and representative.
A 2-column table titled f (x + 1) = 4 (f (x)) has 5 rows. Column 1 is labeled x with entries 1, 2, 3, 4, 5. Column 2 is labeled f (x) with entries 4, a, b, c, 1,024. What are the missing values in the table representing the recursively defined geometric sequence? a = b = c =.
Answer:
16, 64, 256
Step-by-step explanation:
Question 1 (2 x 12 = 24 marks) Analyze and discuss the performance (in Big-O notation) of implementing the following methods over Singly Linked List and Doubly Linked List Data structures: To be submitted through Turnitin.Maximum allowed similaritv is 15% Operation Singly Linked List Doubly Linked List add to start of list Big-O notation Explanation add to end of list Big-O notation Explanation add at given index Big-O notation Explanation
In analyzing the performance of implementing the given methods over Singly Linked List and Doubly Linked List data structures, we consider the Big-O notation, which provides insight into the time complexity of these operations as the size of the list increases.
Add to Start of List:
Singly Linked List: O(1)
Doubly Linked List: O(1)
Both Singly Linked List and Doubly Linked List offer constant time complexity, O(1), for adding an element to the start of the list.
This is because the operation only involves updating the head pointer (for the Singly Linked List) or the head and previous pointers (for the Doubly Linked List). It does not require traversing the entire list, regardless of its size.
Add to End of List:
Singly Linked List: O(n)
Doubly Linked List: O(1)
Adding an element to the end of a Singly Linked List has a time complexity of O(n), where n is the number of elements in the list. This is because we need to traverse the entire list to reach the end before adding the new element.
In contrast, a Doubly Linked List offers a constant time complexity of O(1) for adding an element to the end.
This is possible because the list maintains a reference to both the tail and the previous node, allowing efficient insertion.
Add at Given Index:
Singly Linked List: O(n)
Doubly Linked List: O(n)
Adding an element at a given index in both Singly Linked List and Doubly Linked List has a time complexity of O(n), where n is the number of elements in the list.
This is because, in both cases, we need to traverse the list to the desired index, which takes linear time.
Additionally, for a Doubly Linked List, we need to update the previous and next pointers of the surrounding nodes to accommodate the new element.
In summary, Singly Linked List has a constant time complexity of O(1) for adding to the start and a linear time complexity of O(n) for adding to the end or at a given index.
On the other hand, Doubly Linked List offers constant time complexity of O(1) for adding to both the start and the end, but still requires linear time complexity of O(n) for adding at a given index due to the need for traversal.
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Pack A
240 tea bags
+ 20% extra free
£4
Pack B
240 tea bags
15 % off the
normal price of
£4
Which pack offers the best value for money
As per the given offers of 20% extra free and 15% off the normal price , the pack offers the best value for money is Pack A.
As given in the question,
Different offers on the pack of tea bags :
Pack A offers :
240 tea bags + 20 % extra free with the price of £4
20% of 240 tea bags
= (20/100) × 240
= 48 extra tea bags
Total tea bags in £4 is (240 +48)
£1 = 288 /4
⇒ £1 = 72 tea bags __(1)
Pack B:
240 tea bags 15 % off the normal price of £4
15% of £4
= (15/100) × 4
= £0.6
240 tea bags cost is £(4-0.6)
£3.4 =240
⇒ £1 = 240/3.4
⇒ £1 =70.58 tea bags __(2)
Best value:
From (1) and (2)
Pack A offers the best value for money.
Therefore, for the given offers of 20% extra free and 15% off the normal price , the pack offers the best value for money is Pack A.
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if a person walks 1/6 mile in 10 mintues how far will that person walk in one hour
Answer:
1 mile
Step-by-step explanation:
We can write a ratio to solve
We know 1 hour is 60 minutes
1/6 mile x miles
------------ = ---------------
10 minutes 60 minutes
Using cross products
1/6 miles * 60 minutes = 10 minutes * x
10 = 10x
Divide by 10
1 = x
1 mile
Brenda deposits a third of the money she earns from baby-sitting and a fourth of her allowance into her savings account. In one month she earned $84 baby-sitting and received $80 in allowance. How much did she deposit in her savings account that month?
Answer:
$48 deposited
Step-by-step explanation:
84 times 1/3 = 28
80 times 1/4 = 20
28 + 20 = 48