The solution of the expression is -24/5 < m < 32/5
How to find the solutionsTo solve the absolute value inequality |2 - 5m/2| < 14, we remove the absolute value symbol resulting to two cases which is solved below
Case 1:
2 - 5m/2 < 14
Multiplying both sides by 2
4 - 5m < 28
Subtracting 4 from both sides
-5m < 24
Dividing both sides by -5 and rearranging the equation
m > -24/5
Case 2
2 - 5m/2 < -14
subtracting 2 to both sides
5m/2 < -16
Dividing both sides by -5/2
m < 32/5
Combining the equations
-24/5 < m < 32/5
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In each of the following situations, a significance test for a population mean µ is called for. State the null hypothesis H0 and the alternative hypothesis Ha in each case. Then, assume p=0.02. State the decision that should be made based upon this p-value. Be sure to justify your decision.
a) Experiments on learning in animals sometimes measure how long it takes a mouse to find its way through a maze. The mean time is 18 seconds for one particular maze. A researcher thinks that a loud noise will cause the mice to complete the maze faster. She measures how long each of 10 mice takes with a noise as stimulus.
b) The examinations in a large accounting class are scaled after grading so that the mean score is 50. A self-confident teaching assistant thinks that his students have a higher mean score than the class as a whole. His students this semester can be considered a sample from the population of all students he might teach, so he compares their mean score with 50.
c) A university awards credit in French language courses to students who pass a placement test. The language department wants to know if students who get credit in this way differ in their understanding of spoken French from students who actually take the French courses. Some faculty think the students who test out of the courses are better, but others argue that they are weaker in oral comprehension. Experience has shown that the mean score of students in the courses on a standard listening test is 24. The language department gives the same listening test to a sample of 40 students who passed the credit examination to see if their performance is different
(expert answer asks for more information, but this is all that was given. There was no more significance testing information given)
The null hypothesis (H0) and alternative hypothesis (Ha) for each situation are a) H0: µ = 18 Ha: µ < 18 b) H0: µ = 50 Ha: µ > 50 c) H0: µ = 24 Ha: µ ≠ 24. Based on the given p-value of 0.02, the decision for each situation are a) Since p < 0.05, we reject the null hypothesis b) Since p < 0.05, we reject the null hypothesis c) Since p < 0.05, we reject the null hypothesis.
The null hypothesis (H0) and alternative hypothesis (Ha) for each situation are as follows:
a) H0: µ = 18 (the mean time for mice to complete the maze is equal to 18 seconds)
Ha: µ < 18 (the mean time for mice to complete the maze is less than 18 seconds)
b) H0: µ = 50 (the mean score for the teaching assistant's students is equal to 50)
Ha: µ > 50 (the mean score for the teaching assistant's students is greater than 50)
c) H0: µ = 24 (the mean score for students who passed the credit examination is equal to 24)
Ha: µ ≠ 24 (the mean score for students who passed the credit examination is not equal to 24)
Based on the given p-value of 0.02, the decision for each situation is as follows:
a) Since p < 0.05, we reject the null hypothesis and conclude that the loud noise does cause the mice to complete the maze faster.
b) Since p < 0.05, we reject the null hypothesis and conclude that the teaching assistant's students do have a higher mean score than the class as a whole.
c) Since p < 0.05, we reject the null hypothesis and conclude that the students who passed the credit examination do differ in their understanding of spoken French from students who actually take the French courses.
These decisions are justified because a p-value less than 0.05 indicates that there is a statistically significant difference between the sample mean and the population mean, and therefore we can reject the null hypothesis and accept the alternative hypothesis.
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PLZ SOMEONE HELP ME WIT THIS THE QUESTION IN THE IMAGE
Answer:
sorry i dont get it.
Step-by-step explanation:
how does the sampling rate affect the time response data? what happens when the sampling rate is increased? what happens when it is decreased?
The excess data increases processing time and results in unnecessarily large disk files. if it is too high it runs out of processing time.
What is meant by Sampling Rate?Sampling rate: Sampling rate can be seen as the audio version of frames per second. It is the number of “clips” taken from an analogue sound wave in order to make it a digital file. On top of this, sampling rate also controls the highest frequency that can be accurately reproduced by a digital file
If the sampling rate is too low, information is irreversibly lost and the original signal will not be represented correctly. If it is too high, there is no loss of information, but the excess data increases processing time and results in unnecessarily large disk files.
If the rate of samples is too high the system may not be able to process them fast enough - it runs out of processing time.
The disadvantage of higher sampling rates is: Higher rates use more space. The benefits are not as clear. It is possible that even though the human ear cannot hear frequencies above 20 KHZ, it may be able to perceive distortions that higher frequencies have on audible sound.
If lower sampling rates are used, the original signal's information may not be completely recoverable from the sampled signal. If the sampling frequency is too low, aliasing distortion can result. Aliasing is a major concern when using analog-to-digital conversion.
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Answer:
Aside from lengthening processing times, the extra data causes needlessly big disk files. If it is too high, there is not enough time for processing.
Step-by-step explanation:
What does sampling rate mean?
Sample size: Sampling rate can be thought of as the equivalent of frames per second for audio. The quantity of "clips" necessary to convert an analog sound wave into a digital file. In addition, sampling rate determines the greatest frequency that a digital file can faithfully reproduce.
If the sampling rate is too low, data is lost permanently and the original signal cannot be accurately recreated. No information is lost if it is too high, but the excess data lengthens processing time and produces
The system may not be able to process samples quickly enough if the rate is too high—it runs out of processing time.
Higher sample rates have the drawback of taking up more room. The advantages are not as obvious. The human ear may be able to detect distortions caused by frequencies exceeding 20 KHz even though it cannot hear those frequencies directly.
The information included in the original signal may not be entirely recoverable from the sampled signal if lower sampling rates are employed. Aliasing distortion can happen if the sampling frequency is too low. When using analog-to-digital conversion, aliasing is a significant risk.
Your total at a store is $50. If you decide to use a coupon for 10% off, which expression
shows how much you would pay?
a) 50 - 10
b) 90(50)
c) 50(90)
d) .10(90)
im gonna say d not sure, 10% is 5 dollars off tho
4 x 10" = 4,000,000
n =
9514 1404 393
Answer:
n = 6
Step-by-step explanation:
Perhaps you want n for ...
\(4\times10^n=4\,000\,000\\\\10^n=1\,000\,000 \qquad\text{divide by 4}\\\\n=6\qquad\text{count the zeros}\)
__
You know that multiplying by 10 appends a 0 to the right end of an integer number. So, a 1 with 6 zeros has been multiplied by 10 six times. The exponent signifies the number of times the factor is repeated. The exponent, n, is 6.
a man builds a house with all 4 sides facing south. a bear walks past the house, what color is the bear
The color of the bear is White, since the house is directly built on north pole.
It is believed that this house was built directly on the northernmost point of the earth, the North Pole. In this scenario, if all four of his sides of the house face south, it means the house faces the equator. Since the North Pole is in an Arctic region where polar bears are common, any bear that passes in front of your house is likely a polar bear.
Polar bears are known for their distinctive white fur that blends in with their snowy surroundings. This adaptation is crucial for survival in arctic environments that rely on camouflage to hunt and evade predators.
Based on the assumption that the house is built in the North Pole and bears pass in front of it, the bear's color is probably white, matching the appearance of a polar bear.
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Slope = -1/5, y-Intercept = -1/4
Answer:
\(\sf y =\dfrac{-1}{5}x-\dfrac{1}{4}\)
Step-by-step explanation:
Slope y-intercept form of equation: y =mx +bHere, m is the slope and b is the y-intercept.
Substitute the values of m and b in the above equation.
\(\sf m = \dfrac{-1}{5} \\\\b = \dfrac{-1}{4}\)
Slope y-intercept form:
\(\sf \boxed{y=\dfrac{-1}{5}x - \dfrac{1}{4}}\)
How can you find the magnitude of a vector v→=
, where the horizontal change is x and the vertical change is y?
Answer:
The magnitude of a vector is its length.
To calculate the magnitude of a vector in any number of dimensions, square root the sum of the squares of each dimension.
Therefore, if \(\vec v=(x,y)\) then its magnitude is:
\(|v|=\sqrt{x^2+y^2}\)
Similarly, if \(\vec v=(x,y,z)\) then its magnitude is:
\(|v|=\sqrt{x^2+y^2+z^2}\)
please help
find the value of x in the isosceles triangle shown below.
Answer:
x = square root of 55
x^2 = 8^2 - 3^2
x^2= 64 -9
x = square root of 55
Someone please help me in geometry
Answer: The answer is J
Help solve! i am not sure what the answer is
Can someone please help?
Answer: C = 40
A = 100
Step-by-step explanation:
Answer:
40
Step-by-step explanation:
one thing rsLtd do I FTC Ted e. xrtd dt
Calculate the reliability of the following system:
0.90 0.90
0.90 0.90 0.85
0.85 0.85 0.92
The reliability of the given system is 0.4033.
To calculate the reliability of a system, we need to multiply the reliability values of all the components in the system. In this case, we have a system composed of three components with the following reliability values:
Component 1: 0.90
Component 2: 0.90 0.90 0.85
Component 3: 0.85 0.85 0.92
To find the overall system reliability, we multiply these values together:
System reliability = Component 1 reliability x Component 2 reliability x Component 3 reliability
System reliability = 0.90 x (0.90 x 0.90 x 0.85) x (0.85 x 0.85 *x 0.92)
System reliability ≈ 0.90 x 0.6831 x 0.6528 ≈ 0.4033
Therefore, the reliability of the given system is 0.4033.
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find the area of the quadrangle with vertices (4,2), (-6,6),(-3,-6)
and (3,-3)
Find the area of the quadrangle with vertices \( (4,2),(-6,6),(-3,-6) \), and \( (3,-3) \).
the area of the quadrilateral is 55.5 square units.
To find the area of the quadrilateral with the given vertices, we can use the Shoelace Formula (also known as the Gauss area formula). The formula states that the area of a polygon with vertices \(\((x_1, y_1), (x_2, y_2), \ldots, (x_n, y_n)\)\)is given by:
\(\[A = \frac{1}{2} \left|\sum_{i=1}^{n-1} (x_iy_{i+1} - x_{i+1}y_i) + (x_ny_1 - x_1y_n)\right|\]\)
Let's apply the Shoelace Formula to calculate the area of the quadrilateral with the given vertices:
Therefore, the area of the quadrilateral is 55.5 square units.
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5) |-16 |- |-2|
Evaluate
Answer:
16-2=14
Explination:
Since they were both in the absolute value markers, they remain positive, but since there was a subtraction symbol between them then you subtract the 2 from the 16
what are TWO equivalent fractions for 2/3 ?
Answer:
2/3, 4/6, 6/9
Step-by-step explanation:
Just multiply the denominator and the numerator by any number and it will be equivalent.
Hoped this helped.
Answer:
4/6 and 6/9 are two equivalent fractions for 2/3
What are the transformations for this parent function
Given g of x equals cube root of the quantity x minus 3, on what interval is the function positive? (–[infinity], –3) (–[infinity], 3) (–3, [infinity]) (3, [infinity])
the interval in which g(x) is positive is [3, ∞].
On what interval is the function positive?Here we have the function:
g(x) = ∛(x - 3)
The interval in which the function is positive is defined by:
g(x) > 0.
Then we have:
∛(x - 3) > 0.
We need to solve that inequality for x.
∛(x - 3) > 0
The cube root respects the sign of the argument, then:
x - 3 > 0
x > 3
Then the interval in which g(x) is positive is [3, ∞].
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Find the measure of angle T. Show your work.
Answer:
Angle T = 39
Step-by-step explanation:
Triangle WXY is the same as triangle VTU
Therefore the angles are the same as well so because angle T and angle X are equal they both have the same value
ASAP!!! PLEASE help me solve this question! No nonsense answers, and solve with full solutions.
Answer:
when two inscribed angles in one circle both equal 75°, the two angles must intercept the same arc that measures 75°.
Step-by-step Explanation:
The relationship between an intercepted arc and an inscribed angle is given as:
the measure of the intercepted arc = twice the inscribed angle that intercepts it.
Also, by virtue of this, when two inscribed angles intercepts the same arc, both inscribed angles are said to be congruent. And the measure of both angles equal the measure of the arc they both intercept.
Therefore, if the measure of an arc, that is intercepted by 2 inscribed angles, is given as 75°, both inscribed angles equal 75° as well. Thus, each of the inscribed angles is half the measure of the intercepted arc.
Therefore, the statement that is true about inscribed angles is: "when two inscribed angles in one circle both equal 75°, the two angles must intercept the same arc that measures 75°."
calculate the surface are of the rectangular prism to the nearest tenth of a square centimetre
Answer:
152.32
https://youtu.be/dQw4w9WgXcQ
Find the Area of the figure below, composed of a rectangle and one semicircle, with another semicircle removed. Round to the nearest tenths place.
Answer:
72 square units
Step-by-step explanation:
The figure shown has a uniform horizontal cross section, so is equivalent to a rectangle with length 12 and height 6. Its area is given by the rectangle formula:
A = LW
A = (12)(6) = 72 . . . . square units
__
Additional comment
Essentially, the semicircle removed from the left side is tacked onto the right side. The rectangle area is unchanged by that.
Sierra was charged $576 in interest for borrowing $4,800 for 2 years. What was the interest rate?
Answer:
My best guess would 16.6
I hope that helped! :)
Find a value c in [1, 4] such that f(c) is equal to the average value of f(x) = e^(2x) + 1 on [1, 4].
c = (1/2) * ln[(1/3) * (e^(8) - e^(2) + 2)]
To find a value c in [1, 4] such that f(c) is equal to the average value of f(x) = e^(2x) + 1 on [1, 4], we need to use the Mean Value Theorem. The Mean Value Theorem states that if f is continuous on the closed interval [a,b] and differentiable on the open interval (a,b), then there exists a number c in (a,b) such that f'(c) = (f(b) - f(a))/(b-a).
First, we need to find the average value of f(x) on [1, 4]. The average value of a function on an interval [a,b] is given by:
Average value = (1/(b-a)) * ∫[a,b] f(x) dx
In this case, a = 1, b = 4, and f(x) = e^(2x) + 1. So the average value is:
Average value = (1/(4-1)) * ∫[1,4] (e^(2x) + 1) dx
= (1/3) * (e^(8) - e^(2) + 3)
Next, we need to find a value c in [1, 4] such that f(c) = average value. So we need to solve the equation:
e^(2c) + 1 = (1/3) * (e^(8) - e^(2) + 3)
Simplifying and rearranging terms gives us:
e^(2c) = (1/3) * (e^(8) - e^(2) + 2)
Taking the natural logarithm of both sides gives us:
2c = ln[(1/3) * (e^(8) - e^(2) + 2)]
Finally, we can solve for c:
c = (1/2) * ln[(1/3) * (e^(8) - e^(2) + 2)]
This is the value of c in [1, 4] such that f(c) is equal to the average value of f(x) on [1, 4].
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a travel agency is giving away a free trip as part of a grand opening. the trip will be to one of the ten locations listed. london paris rome sydney athens nassau hong kongmadridtokyorio de janeiro what is the probability that a trip will be to either nassau or paris?
Answer: 1/5
Step-by-step explanation:
The probability that a trip will be to either Nassau or Paris is 0.2 or 20%.
Given, a travel agency is giving away a free trip as part of a grand opening.
The trip will be to one of the ten locations listed. The 10 locations are London, Paris, Rome, Sydney, Athens, Nassau, Hong Kong, Madrid, Tokyo, and Rio De Janeiro.
To find the probability, we need to find how many outcomes are favorable to the event "the trip is to Nassau or Paris" and divide by the total number of possible outcomes.
So, favorable outcomes = 2 (Nassau, Paris)
Total possible outcomes = 10
Probability = (Favorable outcomes)/(Total possible outcomes)= 2/10= 0.2 or 20%.
Therefore, the probability that a trip will be to either Nassau or Paris is 0.2 or 20%.
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Read the problem.
Sara and Elizabeth have exchanged 60 text messages. Sara sent 42 of the messages.
Shade the grid to show the fraction of the text messages that Sara sent.
What percent of the text messages did Sara send? You can use your model to help.
Answer:
I think that Sarah sent 70 percent of the text messages , so you have to shade 70 of them .
If g(x) = x²-x, then g(t-1) =
Answer:
g(t - 1) = t² - 3t + 2
Step-by-step explanation:
substitute x = t - 1 into g(x) , that is
g(t - 1)
= (t - 1)² - (t - 1) ← expand squared factor using FOIL
= t² - 2t + 1 - t + 1 ← collect like terms
= t² - 3t + 2
Evaluate the derivative of the function. y = sec^(-1) (9 In 8x) dy/dx =
The derivative is equal to -9/(ln(8x) * |8x| * sqrt((8x)^2 - 1)), where |8x| represents the absolute value of 8x.
The derivative of the function y = sec^(-1)(9ln(8x)) with respect to x, denoted as dy/dx, can be calculated using the chain rule and the derivative of the inverse secant function.
To find the derivative of y = sec^(-1)(9ln(8x)) with respect to x, we can use the chain rule. Let's break down the calculation step by step.
First, let's differentiate the inverse secant function, which has the derivative d/dx(sec^(-1)(u)) = -1/(u * |u| * sqrt(u^2 - 1)), where |u| represents the absolute value of u.
Now, we have y = sec^(-1)(9ln(8x)), and we need to apply the chain rule. The chain rule states that if y = f(g(x)), then dy/dx = f'(g(x)) * g'(x).
In our case, f(u) = sec^(-1)(u), and g(x) = 9ln(8x).
Taking the derivative of g(x) with respect to x, we get g'(x) = 9 * (1/x) = 9/x.
Next, we need to calculate f'(g(x)). Substituting u = 9ln(8x), we have f'(u) = -1/(u * |u| * sqrt(u^2 - 1)).
Combining all the derivatives, we get dy/dx = f'(g(x)) * g'(x) = -1/(9ln(8x) * |9ln(8x)| * sqrt((9ln(8x))^2 - 1)) * 9/x.
Simplifying this expression, we obtain dy/dx = -9/(ln(8x) * |8x| * sqrt((8x)^2 - 1)).
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What is the slope and y-intercept of y = 43x - 10
Answer:
slope = 43; y-intercept is -10
Step-by-step explanation:
The standard form of an equation for a straight line is y=mx+b, where m is the slope and b is the y-intercept (the value of y when x=0).
y = 43x - 10
y = mx + b
m = 43
b = -10
In the UK, petrol cost £. per litre.
In the USA, petrol cost 3.15 dollars per US gallon. 1 US gallon = 3.79 litres.
£ = . dollars.
Was petrol cheaper in the UK, or in the USA?
Answer:
1£=1 liter 1$ = 1.2 liter. ( ans: in U.K)
Step-by-step explanation:
uk. usa.
1£ = 1liter. 3.15 $ = 1 gallon
3.15$ = 3.79 liter
1$= 1.2 liter
to get the rate of one dollar per liter u will
divide 3.79 (amount of liter) into 3.15 (rate in dollars).
3.79
-------
3.15