31) -20 + (-9) = 33) -19-(-15) =
Help pls
Answers
Answer:
31. -29
33. -4
Step-by-step explanation:
Related Questions
given h(x)=-\(\sqrt{x}\)x-6+8 witch is the correct transformation from the parent function
Answers
The correct transformation include
Horizontal translation to the right by 6 units: Vertical translation up by 8 units: How to determine the transformation of the graph?The equation of the graph is given as
y = √(x -6) + 8
The above equation is a square root
The parent equation of the square root is
y = √x
The sequence of transformations from y = √x to y = √(x - 6) + 8 is as follows:
Shift to the right by 6 unitsShift up by 8 unitsThe transformation rule of the above transformations are as follows:
Shift to the right by 6 units: (x - 6, y)Shift up by 8 units: (x, y + 8)When the above transformations are applied on the equation, we have:
Shift to the right by 6 units: (x - 6, y)Shift up by 8 units: (x - 6, y + 8)This means that the function y = √(x -6) + 8 can be gotten by applying the above sequence of transformation on y = √x
See attachment for the graphs of the transformations where the blue line represents y = √x while the other line represents y = √(x -6) + 8
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loud seeding has been studied for many decades as a weather modification procedure (for an interesting study of this subject, see the article in Technometrics by Simpson, Alsen, and Eden, "A Bayesian Analysis of a Multiplicative Treatment Effect in Weather Modification", Vol. 17, pp. 161–166). The rainfall in acre-feet from 20 clouds that were selected at random and seeded with silver nitrate follows: 18.0, 30.7, 19.8, 27.1, 22.3, 18.8, 31.8, 23.4, 21.2, 27.9, 31.9, 27.1, 25.0, 24.7, 26.9, 21.8, 29.2, 34.8, 26.7, and 31.6.
a-Can you support a claim that mean rainfall from seeded clouds exceeds 25 acre-feet? Use α = 0.01.
b-Is there evidence that rainfall is normally distributed?
c-Compute the power of the test if the true mean rainfall is 27 acre-feet.
d-What sample size would be required to detect a true mean rainfall of 27.5 acre-feet if we wanted the power of the test to be at least 0.9?
e-Explain how the question in part (a) could be answered by constructing a one-sided confidence bound on the mean diameter.
Answers
a) The mean rainfall from seeded clouds exceeds 25 acre-feet is 1.99
b) As per the normal distribution, with the significance level 0.05 the rainfall is normally distributed.
c) The power of the test if the true mean rainfall is 27 acre-feet is 23.5%
d) The sample size would be required to detect a true mean rainfall of 27.5 acre-feet if we wanted the power of the test to be at least 0.9 is 28 clouds
e) The upper bound is greater than 25 acre-feet, we can support the claim that the mean rainfall from seeded clouds exceeds 25 acre-feet with a level of confidence of 99%.
a) To support a claim that mean rainfall from seeded clouds exceeds 25 acre-feet, we can perform a one-tailed hypothesis test with a significance level of α = 0.01.
Substituting the values, we get:
t = (25.96 - 25) / (4.48 / √20) = 1.99
b) To test if the rainfall is normally distributed, we can perform a normal probability plot and a Shapiro-Wilk test.
Using software, we can create a normal probability plot and perform the Shapiro-Wilk test.
The Shapiro-Wilk test also does not reject the null hypothesis that the data is normally distributed at a significance level of α = 0.05, we can assume that the rainfall data is normally distributed.
c) To compute the power of the test if the true mean rainfall is 27 acre-feet, we can perform a one-tailed hypothesis test with a significance level of α = 0.01. The null hypothesis H0 is that the mean rainfall is less than or equal to 25 acre-feet, and the alternative hypothesis Ha is that the mean rainfall is greater than 25 acre-feet.
Substituting the values, we get:
t = (25.96 - 27) / (4.48 / √20) = -1.43
Using software or a t-distribution table, we find that the probability of rejecting the null hypothesis when the true mean is 27 acre-feet is 0.235. Therefore, the power of the test is 0.235 or 23.5%.
d) To determine the sample size required to detect a true mean rainfall of 27.5 acre-feet with a power of at least 0.9, we can use power analysis.
Substituting the values, we get:
d = (27.5 - 25) / 4.48 = 0.56
Therefore, a sample size of at least 28 clouds would be required to detect a true mean rainfall of 27.5 acre-feet with a power of at least 0.9.
e) To answer the question in part (a) by constructing a one-sided confidence bound on the mean diameter, we can use a one-sided confidence interval with a level of confidence of 99%.
Substituting the values, we get:
x + tα,df * (s / √n) = 25.96 + 2.861 * (4.48 / √20) = 27.23
This means that we can be 99% confident that the true population mean rainfall from seeded clouds is greater than 27.23 acre-feet.
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CAN YOU GUYS HELP PLEASE, I HAVE A LIMIT ON THIS!!!!
Answers
Answer:
the 2nd choice
Step-by-step explanation:
hope this helps
may i get braineist pls
Answer:
A. or y=-1/3x-3
Step-by-step explanation:
A small jet can fly
858
858
miles in
3
3
hours with a tailwind but only
702
702
miles in
3
3
hours into a headwind. Find the speed of the jet in still air.
Answers
Answer:
The speed of the jet in still air is 260 miles per hour.
Step-by-step explanation:
Given that a small jet can fly 858 miles in 3 hours with a tailwind but only 702 miles in 3 hours into a headwind, to find the speed of the jet in still air the following calculation must be performed:
858/3 = 286
702/3 = 234
(286 - 234) / 2 = X
52/2 = X
26 = X
286 - 26 = 234 + 26
260 = 260
Therefore, the speed of the jet in still air is 260 miles per hour.
The histogram shows the result of a survey about the number of hours students watch television on the weekend.
How many students participated in the survey?
Answers
The number of students who participated in the survey, based on the histogram showing the number of hours students watch television on the weekend, is 125.
What is a histogram?A histogram is a pictorial or graphical representation of categorical data, proportional to the frequency of a variable and whose width is equal to the class interval.
The number of students who watched between 0 - 4 hours = 20
The number of students who watched between 5 - 9 hours = 40
The number of students who watched between 10 - 14 hours = 30
The number of students who watched between 15 - 19 hours = 20
The number of students who watched between 20 - 24 hours = 15
The total number of students who participated = 125
Thus, using the histogram, the total number of students who participated in the survey was 125.
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The idea of a rigid motion is a significant concept in geometry. Explain what a rigid motion is and why it is important. Using the diagram below identify the specific rigid motions used for the following shapes.
Answers
Answer:
a rigid motion does not affect the overall shape of an object but moves an object from a starting location to an ending location the resultant figure in cogruent to the original figure.a rigged motionis when an object is moved from one location to another and the size and shape have not changed.hope it helps :)
Identify the vertex, equation of the axis of symmetry, y-intercept, and zeros of the graph of a quadratic function.
Answers
Answer:
See below ~
Step-by-step explanation:
Details of Graph
Vertex = (-3, 4)Axis of Symmetry : x = -3Y-intercept : -5Zeros : (-5, 0) and (-1, 0)What is the mixed number of 14/4
Answers
Answer:
3 2/4 or 3 1/2
Step-by-step explanation:
Have a great day!
Check
3*4=12 +2 = 14
I want to understand how to set it up to be able to answer. I am to use a Taylor Polynomial to estimate e to at least 3 decimal places.
Answers
Answer:
A Taylor series approximation uses a Taylor series to represent a number as a polynomial that has a very similar value to the number in a neighborhood around a specified x value: f ( x ) = f ( a ) + f ′ ( a ) 1 ! ( x − a ) + f ′ ′ ( a ) 2 !
Step-by-step explanation:
The graph of f(x) = |x| is reflected across the y-axis and translated to the left 5 units. Which statement about the domain and range of each function is correct? Both the domain and range of the transformed function are the same as those of the parent function. Neither the domain nor the range of the transformed function are the same as those of the parent function. The range of the transformed function is the same as the parent function, but the domains of the functions are different. The domain of the transformed function is the same as the parent function, but the ranges of the functions are differe
Answers
Both the domain and range of the transformed function are the same as those of the parent function.
What are Range and Domain?
The collection of all potential output values that a function can generate given its domain is known as its range.
The set of all potential input values for which a function is specified is referred to as its domain.
The function that results from translating the left 5 units and reflecting the function f(x) = |x| across the y-axis is g(x) = |-x + 5|.
Since any real number's absolute value is always non-negative, the original function's domain is all real numbers, or f(x) = |x|.
A function's domain remains unaffected when it is reflected across the y-axis. Since all real numbers fall within the domain of the modified function g(x) = |-x + 5|, this is also true.
Since each real number's absolute value is always non-negative, the original function's range is also all non-negative real numbers, f(x) = |x|.
A function's sign is reversed when it is reflected across the y-axis. Since all non-negative real numbers fall within this range, the transformed function g(x) = |-x + 5| also has this range as well
So, the correct statement about the domain and range of each function is: Both the domain and range of the transformed function are the same as those of the parent function.
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Please answer this screenshot please 10 points good idea yes.
Answers
Answer:
Yes it is a function
Step-by-step explanation:
There is a relationship between x and y. It is not linear but quadratic
Answer:
yes it is a function
Step-by-step explanation:
that is the answer bc I said I was
Solve the triangle. Round to the nearest tenth.
Find c aswell
Answers
Answer:
Set your calculator to Degree mode.
a² = 17² + 20² - 2(20)(17)cos(89°)
a² = 677.13236
a = 26.0 in.
sin(89°)/26.02177 = (sin B)/17
sin B = 17sin(89°)/26.02177
B = 40.8°
C = 50.2°
0.834
0.861
0.927
0.877
0.831
0.925
0.912
0.83
0.849
0.933
0.884
find mean, median, maximum, minimum, and mode
Answers
Mean ≈ 0.874
Median ≈ 0.877
Maximum = 0.933
Minimum = 0.83
Mode = None
To find the mean, median, maximum, minimum, and mode of the given numbers:
Mean: The mean is the average of a set of numbers.
To calculate the mean, add up all the numbers and divide the sum by the total count.
Mean = (0.834 + 0.861 + 0.927 + 0.877 + 0.831 + 0.925 + 0.912 + 0.83 + 0.849 + 0.933 + 0.884) / 11
Mean ≈ 0.874
Median: The median is the middle value when the numbers are arranged in ascending or descending order.
Since there are 11 numbers, the median would be the 6th number when arranged in order.
Arranging the numbers in ascending order:
0.83, 0.831, 0.834, 0.849, 0.861, 0.877, 0.884, 0.912, 0.925, 0.927, 0.933
Median ≈ 0.877
Maximum: The maximum is the largest value among the given numbers.
Maximum = 0.933
Minimum: The minimum is the smallest value among the given numbers.
Minimum = 0.83
Mode: The mode is the value(s) that appear most frequently in the given numbers.
If there is no value that appears more than once, there is no mode.
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According to the CDC, only 20% of Americans get enough exercise each week. You conduct a survey of 200 people.
a. What is the probability that 45 or more people in your survey get enough exercise? Use a normal approximation for p hat
b. Find the exact binomial probability that 45 or more people in your survey get enough exercise.
Answers
The exact binomial probability that 45 or more people in the survey get enough exercise is 0.0853.
What is mean?The mean (also called the arithmetic mean or average) is a measure of central tendency that represents the typical or average value of a set of data. The mean is calculated by summing up all the values in the data set and dividing by the number of values.
According to question:a. To calculate the probability that 45 or more people in the survey get enough exercise using a normal approximation for p hat, we need to first find the mean and standard deviation of the sample proportion.
The mean of the sample proportion is:
μ = p = 0.20
The sample proportion's standard deviation is:
σ = √[(p(1-p))/n] = √[(0.20)(0.80)/200] = 0.034
Using the normal distribution with a continuity correction, we can find the probability of 45 or more people getting enough exercise:
z = (45 - 0.20200 + 0.5) / √(0.200.80*200) = 1.24
P(Z > 1.24) = 0.1082
Therefore, the probability that 45 or more people in the survey get enough exercise is approximately 0.1082.
b. To find the exact binomial probability that 45 or more people in the survey get enough exercise, we can use the binomial cumulative distribution function (CDF) with n = 200 and p = 0.20:
P(X ≥ 45) = 1 - P(X < 45) = 1 - binomcdf(200, 0.20, 44) = 0.0853
Therefore, the exact binomial probability that 45 or more people in the survey get enough exercise is 0.0853.
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Some manufacturers claim that non-hybrid sedan cars have a lower mean miles-per-gallon (mpg) than hybrid ones. Suppose that consumers test 21 hybrid sedans and get a mean of 32 mpg with a standard deviation of 6 mpg. Thirty-one non-hybrid sedans get a mean of 21 mpg with a standard deviation of three mpg. Suppose that the population standard deviations are known to be six and three, respectively. Conduct a hypothesis test at the 5% level to evaluate the manufacturers claim. NOTE: If you are using a Student's t-distribution for the problem, including for paired data, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.)
Answers
Answer:
There is enough evidence to support the claim of the manufacturers that non-hybrid sedan cars have a lower mean miles-per-gallon (mpg) than hybrid ones.
Step-by-step explanation:
This is a hypothesis test for the difference between populations means.
The claim is that non-hybrid sedan cars have a lower mean miles-per-gallon (mpg) than hybrid ones.
Then, the null and alternative hypothesis are:
\(H_0: \mu_1-\mu_2=0\\\\H_a:\mu_1-\mu_2> 0\)
The significance level is 0.05.
The sample 1 (hybrid), of size n1=21 has a mean of 32 and a standard deviation of 6.
The sample 2 (non-hybrid), of size n2=31 has a mean of 21 and a standard deviation of 3.
The difference between sample means is Md=11.
\(M_d=M_1-M_2=32-21=11\)
The estimated standard error of the difference between means is computed using the formula:
\(s_{M_d}=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}=\sqrt{\dfrac{6^2}{21}+\dfrac{3^2}{31}}\\\\\\s_{M_d}=\sqrt{1.714+0.29}=\sqrt{2.005}=1.4158\)
Then, we can calculate the t-statistic as:
\(t=\dfrac{M_d-(\mu_1-\mu_2)}{s_{M_d}}=\dfrac{11-0}{1.4158}=\dfrac{11}{1.4158}=7.77\)
The degrees of freedom for this test are:
\(df=n_1+n_2-2=21+31-2=50\)
This test is a right-tailed test, with 50 degrees of freedom and t=7.77, so the P-value for this test is calculated as (using a t-table):
\(\text{P-value}=P(t>7.77)=0.0000000002\)
As the P-value is smaller than the significance level (0.05), the effect is significant.
The null hypothesis is rejected.
There is enough evidence to support the claim that non-hybrid sedan cars have a lower mean miles-per-gallon (mpg) than hybrid ones.
What is the formula for finding distance?
Answers
Answer:Learn how to find the distance between two points by using the distance formula, which is an application of the Pythagorean theorem. We can rewrite the Pythagorean theorem as d=√((x_2-x_1)²+(y_2-y_1)²) to find the distance between any two points. Created by Sal Khan and CK-12 Foundation
Step-by-step explanation:
What are the coordinates of your new IMAGE A’B’C’?
A’=____
B’=____
C’=____
Answers
Answer:
Sensor Calibration
Convert between coordinate systems of every sensor, image, vehicle and global coordinate axis system. So data from a sensor can be mapped globally.
Calibration of a camera helps to convert a pixel in an image to
Computer Vision
Step-by-step explanation:
2x+10= 5x-17 hurry is for a test
Answers
Explanation
Answer:
X is 9
Step-by-step explanation:
help with horizontal asymptotes
Answers
Answer:
y = 3. last option is correct answer for 2nd question.
Step-by-step explanation:
f(x) just means y.
horizontal asymptote is y = 'something.'
the graph crosses y = 4, so y = 4 cannot be asymptote.
y = 3 is since the graph never quite touches it.
as for ∞, we see that as x approaches -∞, y almost reaches 3. but not quite. also, as x approaches +∞, y approaches +∞.
so the last option is the correct answer.
The archaeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high kings of Ireland. Because of it's archaeological importance, Tara has received extensive study (Reference: Tara: An Archaeological Survey by Conor Newman, Royal Irish Academy, Dublin). Suppose an archaeologist wants to estimate the density of ferromagnetic artifacts in the Tara region. For this purpose, a random sample of 55 plots, each of size 100 square meters, is used. The number of ferromagnetic artifacts for each plot is determined.
Answers
Answer: Hello your question is incomplete attached below is the complete question.
answer:
a) The number of ferromagnetic artifacts per 100 square meters ( option A )
b) quantitative ( option D )
c) Entire Tara region ( option A )
Step-by-step explanation:
a) Determine The Variable
The number of ferromagnetic artifacts per 100 square meters
b) The Variable is quantitative
This is because the variable used in the study has numerical value attached to it hence we can say it is a quantitative variable.
c) The implied population
Entire Tara region
7. A pupil sat for a test in five subjects.
He got a total of 380 marks. How
many marks did he lose if every
subject was marked out of 100?
A. 280 B. 500
C. 120
D 220
Answers
Answer:
option C: 120
Step-by-step explanation:
total marks = 5× 100 = 500
marks he obtained = 380
marks he lost = 500 - 380 = 120
plz mark my answer as brainlist plzzzz.
hope this will be helpful to you.
find the difference of (-10x^2 + 5x -3) and (4x^2 + 6x - 7)
Answers
Answer:
-14x² - x + 4
Step-by-step explanation:
(-10x² + 5x - 3) - (4x² + 6x - 7)
= (-10x² + 5x - 3) - (+4x²) - (+6x) - (-7)
= (-10x² + 5x - 3) -4x² -6x +7
= -10x²-4x² +5x-6x -3+7
= -14x² - x + 4
Pls help me with this question
Answers
The equation that represents the condition is m° + 66° + m° = 120°. Then the value of m is 27°.
When two lines intersect, then their opposite angles are equal. Then the equation is given as,
m° + 66° + m° = 120°
Simplify the equation for m, then the value of 'm' is calculated as,
m° + 66° + m° = 120°
2m° = 120° - 66°
2m° = 54°
m° = 27°
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Suppose that there are two types of tickets to a show: advance and same-day. Advance tickets cost 25$ and same-day tickets cost 20$ . For one performance, there were 50 tickets sold in all, and the total amount paid for them was 1150$ . How many tickets of each type were sold?
Answers
Answer:
Number of advance tickets sold = 30
Number of same-day tickets sold = 20
Step-by-step explanation:
Let,
x be the number of advance tickets sold
y be the number of same-day tickets sold
According to given statement;
x + y = 50 Eqn 1
25x + 20y = 1150 Eqn 2
Multiplying Eqn 1 by 25
25(x+y=50)
25x + 25y = 1250 Eqn 3
Subtracting Eqn 2 from Eqn 3
(25x+25y)-(25x+20y) = 1250 - 1150
25x + 25y - 25x - 20y = 100
5y = 100
Dividing both sides by 5
\(\frac{5y}{5}=\frac{100}{5}\\y=20\)
Putting y = 20 in Eqn 1
x + 20 = 50
x = 50 - 20
x = 30
Hence,
Number of advance tickets sold = 30
Number of same-day tickets sold = 20
g(x)=x-3
h(x) = 3x + 1
Find (g of h)(2)
Answers
Answer:
i do not know srry but i can guess
Step-by-step explanation:
What are the solutions to the equation sin sin (x + (7pi)/2) = - (sqrt(3))/2 over the interval [0, 2pi]?
![What are the solutions to the equation sin sin (x + (7pi)/2) = - (sqrt(3))/2 over the interval [0, 2pi]?](https://i5t5.c14.e2-1.dev/h-images-qa/contents/attachments/3yS2oMNfM9usJSMqdSgQPCPzoqnTMdHX.png)
Answers
An average drop of blood contains about 1.6×104 white blood cells. A rare drop of blood contains about 5×104 white blood cells. What is the difference between the number of white blood cells in a rare drop of blood and the number of white blood cells in an average drop of blood?
Answers
Answer:
353.6
Step-by-step explanation:
White blood cells in average drop of blood = 1.6 * 104 = 166.4
White blood cels in rare drop of blood = 5 * 104 = 520
Difference between the number of white blood cells in a rare drop of blood and the number of white blood cells in an average drop of blood
= 520 - 166.4 = 353.6
T- shirts at a flea market cost $4.50 each and shorts costs $6 each. you have $108A. write an equation that models the possible combinations of t-shirts (t) and shorts (s) you can buyB. if you purchase 6 shorts, how many t-shirts can you buy? show your work. write your answer in a complete sentence.C. if you purchase 10 shirt's z what is the maximum number or shorts you can buy? include evidence to support your answer. write your answer in a complete sentence
Answers
A.
Let t be the number of t-shirts you buy and s the number of shorts you buy.
Since each t-shirt you buy cost $4.50 the total cost for t-shirts is:
\(4.5t\)Since each short you buy cost $6 the total cost for shorts is:
\(6s\)The total cost of your purchase is:
\(4.5t+6s\)Since you have a total of $108 the equation that models the possible combinations of your purchase is:
\(4.5t+6s=108\)B.
If you buy 6 shorts that means that s=6, plugging this value into the equation above and solving for t we have:
\(\begin{gathered} 4.5t+6(6)=108 \\ 4.5t+36=108 \\ 4.5t=108-36 \\ 4.5t=72 \\ t=\frac{72}{4.5} \\ t=16 \end{gathered}\)Therefore, If you purchased 6 shorts then you can buy 16 t-shirts.
C.
If you buy 10 shirts that means that t=10, plugging this value into the equation in part A and solving for s we have:
\(\begin{gathered} 4.5(10)+6s=108 \\ 45+6s=108 \\ 6s=108-45 \\ 6s=63 \\ s=\frac{63}{6} \\ s=10.5 \end{gathered}\)Now, since you can't buy half of a short the answer above means ( that:
If you buy 10 shirts then you can buy a maximum of 10 shorts, this wil be a total of $103
ƒ(t) = –1∕2t2 + 2t + 6
Answers
This function represents a downward-opening parabola with a vertical shift of 6 units upward.
How to explain the functionThe given function is Ƒ(t) = –1/(2t²) + 2t + 6.
This is a quadratic function in terms of t. The general form of a quadratic function is f(t) = at² + bt + c, where a, b, and c are constants.
Comparing the given function Ƒ(t) = –1/(2t²) + 2t + 6 with the general form, we can see that a = -1/2, b = 2, and c = 6.
So, the function Ƒ(t) can be written as:
Ƒ(t) = (-1/2)t² + 2t + 6
This function represents a downward-opening parabola with a vertical shift of 6 units upward.
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HELP
Mrs. Tate's car has 11.25 gallons of gas in the tank and uses 0.05 gallons per mile. If Mrs. Tate uses 2.75 gallons driving home from visiting family, which of the following best describes all possible numbers of miles (m) she can drive after returning home before running out of gas?
A.
m > 170
B.
m < 170
C.
m < 280
D.
m > 280
Answers
Answer:
B
Step-by-step explanation:
11.25-2.75 = 8.5
8.5/.05 = 170
Answer:
Step-by-step explanation:
170