Answer:
first option
Step-by-step explanation:
The average rate of change of f(x) in the closed interval [ a, b ] is
\(\frac{f(b)-f(a)}{b-a} \)
Here [ a, b ] = [ 1, 5 ]
f(b) = f(5) = 17 - 5² = 17 - 25 = - 8
f(a) = f(1) = 17 - 1² = 17 - 1 = 16 , then
average rate of change = \(\frac{-8-16}{5-1} \) = \(\frac{-24}{4} \) = - 6
Answer:
answer is -6
Step-by-step explanation:
Here,
Let [1,5] be[a,b]
f(x)=17-x²
f(a)=17-a²=17-1²=17-1 = 16
f(b) = 17-b² = 17-5² = 17-25 = -8
now, using formula,
{f(b)-f(a)}/(b-a)
(-8-16)/(5-1)
-24/4
=-6
A teacher recorded unit 4 test scores from her class.
58, 64, 66, 70, 71, 75, 77, 80,
84, 85, 87, 90, 93, 95, 96.
Find the percentile rank of a score of 71 on this street -
Victor is in the 60th percentile, what was his score?
The percentile score of 71 on test score is 27 and the score of victor is 71.
What is Statistics?Statistics is the science concerned with developing and studying methods for collecting, analyzing, interpreting and presenting empirical data.
Given, the teacher recorded unit 4 test scores from class.
The scores are: 5,4,66,70,71,75,77,80,84,85,87,90,93,95 and 96.
A percentile is a value on a scale of one hundred that indicates the percent of a distribution that is equal to or below it.
The percentile rank of a score of 71 on the test is find by formula
\(R_{100} =\frac{100(N < )+\frac{1}{2} }{N}\)
=100×4+1/2(1)/15
=400+0.5/15
=400.5/15
=26.7=27th
Now we need to find the score of victor who has 60th percentile.
60=Score/15
score=71
Hence, the percentile score of 71 on this test score is 27 and the score of victor is 71.
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Solve each equation for the given variable.
1.
x - 17 = 28
Answer:
x=45
Step-by-step explanation:
x=28+17
x=45
if someone told you that a distribution showed a floor effect, you would surmise that it is group of answer choices
When someone describes a distribution as having a floor effect, it means that the distribution is characterized by a significant clustering of values at the minimum value, creating a skewed distribution with a long tail on the higher end.
This phenomenon is often observed in situations where there is a lower limit or minimum value that restricts the possible range of values that can be observed. The floor effect can be seen in various domains such as clinical trials, educational testing, psychological assessments, and market research, to name a few.
For instance, in a clinical trial, the use of an intervention that is highly effective in reducing symptoms may lead to a large number of participants reaching the minimum score, making it difficult to differentiate between groups in terms of treatment response.
Similarly, in educational testing, a poorly designed test or a test that is too easy for the group being tested may result in a floor effect, where students cluster around the lowest score and scores do not differentiate between students with different levels of knowledge.
A floor effect can be problematic because it can limit the ability to detect differences or changes in scores or performance, which can have implications for interpreting and comparing results across different groups or time points.
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x^2 = 2x + 47 NEED HELP SOLVING QUADRATIC EQUATION
Answer:
the answer is
Solve the equation for x by finding a, b, and c
of the quadratic then applying the quadratic formula.
Exact Form:
x=1+4√3,1−4√3
Decimal Form:
x=7.92820323…,−5.92820323…
Michael is writing an article for the school newspaper. He wants to know which subject (math, reading, science, history, or physical education)
is most liked. He is trying to decide who to survey.
Which population sample does NOT produce a biased result?
A. He asks the school’s teachers
B. He asks his friends after school
C. He asks the students in his math class
D. He asks students he meets in the hallways
E. He asks every fifth student arriving at school
Answer: E is the answer
Step-by-step explanation:
The population sample that does not produce a biased result is when he asks every fifth student arriving at school. The correct option is E.
What is a survey?Surveys can be used to determine how representative each person's opinions and experiences are.
When conducted properly, surveys offer precise data about people's beliefs and actions that can be utilized to inform significant decisions.
A huge population's characteristics can be described through surveys. No other research methodology can offer such a wide range of capabilities.
This guarantees a more accurate sample to collect focused results from which to draw conclusions and make significant judgments.
Survey bias is when a question is worded or presented in a way that encourages individuals to select one response over another.
The same holds true if your queries are challenging for customers to comprehend and honestly answer.
As, when he asks every fifth student arriving at school, it can lead to an unbiased result.
Thus, the correct option is E.
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HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
Just multiply
Step-by-step explanation:
Which inequality is a true statement?
Select each correct answer.
−3<−1
−3≤−1
−3>−1
−3≥−1
−3=−1
(please answer correctly)
Answer:
−3 < −1
−3 ≤ −1
Step-by-step explanation:
Symbol explanation
< means "less than".> means "more than".≤ means "less than or equal to".≥ means "more than or equal to".= means "equal to".A negative number is any number that is less than zero.
On the number line the negative numbers are to the left of the zero.
-3 is less than -1 because -3 lies to the left of -1 on the number line.
Therefore, the only given inequalities that are true statements are:
-3 < -1 as -3 is less than -1.-3 ≤ −1 as -3 is less than or equal to -1.Jack goes to a restaurant in a state with a 7.25% sales tax. He buys a
meal and tips 20% before tax. Select the meal cost that would allow his
total bill, including tip and tax, to have a total cost equal to $15.
The meal cost spent by Jack at the restaurant if he spent $15 including tip and bill is $11.79.
What is an equation?An equation is an expression that shows the relationship between two or more variables and numbers.
Let x represent the meal cost, hence:
Total cost = x + 0.2x + 0.0725x
15 = 1.2725x
x = 11.79
The meal cost spent by Jack at the restaurant if he spent $15 including tip and bill is $11.79.
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length of burger vector of copper in nanometer
The concept of a "burger vector" is typically used in materials science and refers to the magnitude and direction of the lattice distortion or deformation between two crystal planes in a crystalline material.
The length of the burger vector would depend on the specific material and the nature of the deformation, so it is not possible to provide a general answer.
As for copper, it has a face-centered cubic (FCC) crystal structure, with a lattice constant of approximately 0.3615 nanometers. However, this information alone does not provide enough information to calculate a burger vector. More specific information about the deformation or dislocation in the material would be needed.
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Which classification is most precise for each figure?
A. Quadrilateral
B. Kite
C. Parallelogram
PLEASE ANSWER THIS QUESTION AND I WILL GIVE YOU 20 POINTS AND MAKE YOU BRAINIEST!!!!
Answer:
c. parallelogram
Step-by-step explanation:
The given figure is a parallelogram.
What is Quadrilateral?A quadrilateral is a four-sided polygon, having four edges and four corners.
In the given quadrilateral, opposite sides are parallel.
Opposite sides are congruent.
Opposite angles are congruent.
Same-Side interior angles are supplementary.
Each diagonal of a parallelogram separates it into two congruent triangles.
The diagonals of a parallelogram bisect each other.
Hence, the given figure is a parallelogram.
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An inclined plane that forms a 30° angle with the horizontal is thus released from rest, allowing a thin cylindrical shell to roll down it without slipping. Therefore, we must determine how long it takes to travel five metres. Given his theta, the distance here will therefore be equivalent to five metres (30°).
The transformation of System A into System B is:
Equation [A2]+ Equation [A 1] → Equation [B 1]"
The correct answer choice is option D
How can we transform System A into System B?
To transform System A into System B as 1 × Equation [A2] + Equation [A1]→ Equation [B1] and 1 × Equation [A2] → Equation [B2].
System A:
-3x + 4y = -23 [A1]
7x - 2y = -5 [A2]
Multiply equation [A2] by 2
14x - 4y = -10
Add the equation to equation [A1]
14x - 4y = -10
-3x + 4y = -23 [A1]
11x = -33 [B1]
Multiply equation [A2] by 1
7x - 2y = -5 ....[B2]
So therefore, it can be deduced from the step-by-step explanation above that System A is ultimately transformed into System B as 1 × Equation [A2] + Equation [A1]→ Equation [B1] and 1 × Equation [A2] → Equation [B2].
The complete image is attached.
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Select all of the situations which can be represented by the expression 25.75x + 10
Answer:
Max has $10.00. He earns $25.75 for every lawn that he mows.
Sasha sells a scarf for $10.00 and x jackets for $25.75 each.
Step-by-step explanation:
The equation |ax + b| = c must have ? .
O only 1 solution
O 1 or 2 solutions
O 0, 1, or 2 solutions
O 0,1 or an infinite number of solutions
Answer:
O 0,1 or an infinite number of solutions
Step-by-step explanation:
scout troop 456 has 24 members. the scoutmaster appoints a 5-member campout crew composed of a leader, a cook, and a cleanup crew (3 scouts). how many different campout crews are possible?
As per the combination method, there are 42504 different campout crews are possible.
Combination method:
In math, combination method means a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter.
Given,
Scout troop 456 has 24 members. the scoutmaster appoints a 5-member campout crew composed of a leader, a cook, and a cleanup crew (3 scouts).
Here we need to find the number of different campout crews are possible.
According to the nCr formula, here the value of
n = 24
And the value of r = 5
Then the number of possible combinations are calculated as,
=> ²⁴C₅ = 24!/5!(24 - 5)!
=> ²⁴C₅ = 24!/5!19!
=> ²⁴C₅ = 42504
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find the distance between the pairs of points. Round to the nearest hundredth (7, 11) and (4, 23)
Answer:
12.37
Step-by-step explanation:
I attached a picture of the work but a few notes on it
1. I did use a calculator for the square root
2. the square root symbol was in the way and a bit distracting so I had to drop it (temporarily) but to do that I squared both sides but that's kinda optional. and I wrote it on the paper
let t be a linear transformation defined by a square matrix a. prove that t is an isomorphism if and only if a is nonsingular.
A linear transformation t defined by a square matrix a is an isomorphism if and only if a is nonsingular.
To prove this statement, we first recall that an isomorphism is a linear transformation that is both injective (one-to-one) and surjective (onto). If t is an isomorphism, then it is invertible, which means that there exists another linear transformation t^-1 such that t(t^-1(x)) = x and t^-1(t(x)) = x for all vectors x in the domain of t. In matrix notation, this means that aa^-1 = a^-1a = I, where I is the identity matrix.
Now suppose that a is nonsingular, which means that its determinant det(a) is nonzero. This implies that a^-1 exists and is also a square matrix. If we can show that t is injective and surjective, then we can conclude that t is an isomorphism. To prove injectivity, suppose that t(x) = t(y) for some vectors x and y. Then ax = ay, which implies that a(x - y) = 0. Since det(a) is nonzero, it follows that x - y = 0, which means that x = y. Thus, t is injective. To prove surjectivity, let z be an arbitrary vector in the range of t. Then there exists a vector y such that t(y) = z.
This implies that ay = z, which means that y = a^-1z. Thus, every vector in the range of t can be written as t(a^-1z), which shows that t is surjective. Therefore, we can conclude that t is an isomorphism if a is nonsingular. Conversely, if t is an isomorphism, then it must be invertible, which implies that a must be nonsingular, as we showed earlier. Thus, t is an isomorphism if and only if a is nonsingular.
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A book is on sale for $6 off of the regular $24 price. Whet percent is the discount? [Type your answer as a number]
%
Please help
Answer:
The answer should be 25% off
Step-by-step explanation:
sorry if wrong
The table of values below represents a linear relationship.
Y
4
6
0
3
4
0
What is the slope and y-intercept for this line?
Slope
y-intercept
Given:
The table of values.
To find:
The slope and y-intercept for this line.
Solution:
From the given table, we have three (-4,6), (0,3), (4,0).
We need to find the slope and y-intercept for this line.
Consider any two points from the given points.
Consider the line passes through the points (0,3) and (4,0). So, the slope of the line is:
\(m=\dfrac{y_2-y_1}{x_2-x_1}\)
\(m=\dfrac{0-3}{4-0}\)
\(m=\dfrac{-3}{4}\)
The line passes through the point (0,3). Here the x-coordinate is 0. So, the y-intercept is 3.
Therefore, the slope of the line is \(\dfrac{-3}{4}\) and the y-intercept of the line is 3.
which of the following exponential functions has a horizontal asymptote at y = –3?
None of the given functions (A, B, C, or D) have a horizontal asymptote at y = 3 since they are all linear functions, not exponential functions. Thus, the correct option is :
(E) None of these.
To determine which of the given exponential functions has a horizontal asymptote at y = 3, we need to examine the behavior of the functions as x approaches positive or negative infinity.
Let's analyze each option:
(A) f(x) = -3x + 3
This is a linear function, not an exponential function. It does not have an exponential growth or decay component and does not have a horizontal asymptote at y = 3.
(B) f(x) = -3x - 3
Again, this is a linear function, not an exponential function. It also does not have an exponential growth or decay component and does not have a horizontal asymptote at y = 3.
(C) f(x) = 3 - x + 3
This is not an exponential function. It is a linear function with a negative slope. It does not have an exponential growth or decay component and does not have a horizontal asymptote at y = 3.
(D) f(x) = 3 - x - 3
Similar to the previous options, this is not an exponential function. It is a linear function with a negative slope. It also does not have an exponential growth or decay component and does not have a horizontal asymptote at y = 3.
Thus, the correct option is :
(E) None of these.
The correct question should be :
Which of the following exponential functions has a horizontal asymptote at y=3 ?
(A) fx=-3x+3
(B) fx=-3x-3
(C) fx=3-x+3
(D) fx=3-x-3
(E) None of these.
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IM 7.1.10 Cool Down
The grey box is a scale drawing of a window frame that uses a scale of 1 cm to 6 inches.
Create another scale drawing of the window frame that uses a scale of 1 cm to 12 inches
(You may draw on or over the original frame if needed.)
x Clear
Undo
Redo
+
Answer:
Calculating the Actual Distance using the Scale
If the scale is 1 : x, then multiply the map distance by x to calculate the actual distance.
Step-by-step explanation:
given tannen's perspective on gender differences in communication, what would you expect to find regarding salary negotiation and gender
Given tannen's perspective on gender differences in communication, Men far more than women negotiate for higher starting salaries because salary is a sign of status. So, correct option is C.
Based on Tannen's perspective on gender differences in communication, it is likely that you would find that men negotiate for higher starting salaries far more than women because salary is a sign of status.
Tannen argues that men are socialized to use language as a way to establish and maintain their status in society, and negotiating for a higher salary is one way for men to assert their status.
Women, on the other hand, are socialized to use language as a way to build and maintain relationships, and negotiating for a higher salary may be perceived as aggressive or confrontational, which goes against societal expectations for women's communication style.
Therefore, option (c) is the most likely answer.
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Complete question is:
Given tannen's perspective on gender differences in communication, what would you expect to find regarding salary negotiation and gender
answer choices:
a. Women negotiate for higher starting salaries far more than men because they wish to prove their worth
b. Men and women negotiate for higher starting salaries about equally
c. Men far more than women negotiate for higher starting salaries because salary is a sign of status
d. None of the above is true
How do I solve this?
\(\begin{array}{llll} \textit{using the pythagorean theorem} \\\\ c^2=a^2+o^2\implies c=\sqrt{a^2 + o^2} \end{array} \qquad \begin{cases} c=\stackrel{hypotenuse}{y}\\ a=\stackrel{adjacent}{1}\\ o=\stackrel{opposite}{1} \end{cases} \\\\\\ y=\sqrt{ 1^2 + 1^2}\implies y=\sqrt{ 1 + 1 } \implies y=\sqrt{ 2 } \\\\[-0.35em] ~\dotfill\)
\(\begin{array}{llll} \textit{using the pythagorean theorem} \\\\ c^2=a^2+o^2\implies c=\sqrt{a^2 + o^2} \end{array} \qquad \begin{cases} c=\stackrel{hypotenuse}{x}\\ a=\stackrel{adjacent}{\sqrt{2}}\\ o=\stackrel{opposite}{13} \end{cases} \\\\\\ x=\sqrt{ (\sqrt{2})^2 + 13^2}\implies x=\sqrt{ 2 + 169 } \implies x=\sqrt{ 171 }\implies \boxed{x=3\sqrt{19}}\)
What is the value of this expression when x = 8 and y = 2?
9+y^2⋅x−y^3
Enter your answer in the box.
Answer:
The answer will
be 0
Step-by-step explanation:
=9+4×8-8
=13×0
=0
How do you graph linear inequalities 2x 3y 12?
Given linear inequalities is solved using graph paper line will pass through (6,0) and (-0,4) Area where required linear inequalities is satisfied is towards origin.
let's first try to understand what is linear inequalities?
A linear inequality in mathematics is an inequality involving a linear function. One of the symbols for inequality is found in a linear inequality. It displays non-equal data in graph style.
the linear inequality's graph Since the inequality is severe and the shaded region points in the direction of the origin, 2 x-3 y < 12 is a straight line passing through the points (6, 0) and (0, -4), with the line being dot-dotted.
x - coordinate of the given line 2x - 3y =12
y =0 2x = 12 x = 6 (6,0)
y - coordinate of the given line -3y = 12 y = -4 (0,-4)
line passes through (6,0) and (0,-4).
Given Question is incomplete complete Question here:
How do you graph linear inequalities 2x - 3y< 12?
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The diagram shows a circle with centre O.
A & B lie on the circumference of this circle.
Given that ∠OAB = 40°, evaluate ∠AOB.
Helppp ASAP
As angle OAB =40-degree, angle AOB is 100 degrees according to the properties of circle and triangle.
What are the properties of circle?Some Properties of circle are distance from center of the circle to each point on the circumstances are equal. hence, OA=OB
Diameter is twice of radius.
What is isosceles triangle?The triangle having two equal side length is called isosceles triangle. In the figure, triangle OAB is an isosceles as OA=OB=radius
According to the criteria of isosceles triangle angle OAB =OBA =40°
hence, angle AOB= 180 degrees - (40°+40°) [angle sum of triangle =180°]
angle AOB= 100 degrees.
We get, AOB = 100 degrees
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Please help me with this math problem!! NO LINKS PLEASE!! Will give brainliest if correct!! :) (Picture attached below)
Answer:
The answer I got is ×=31
What are the answers
Answer:
Insert question here--->
Step-by-step explanation:
Please hurry!!!
At the same time, Min's little brother throws a
baseball from a height of 4 feet with an initial
vertical velocity of 20 feet per second. What
polynomial models the height of this ball, in feet?
- 16t²+ ?t +?
Answer:
20t+4
Step-by-step explanation:
20t=?t
4=?
Answer:
here
Step-by-step explanation:
Example A chain of video stores sells three different brands VCRs, of its VCR sales, 50% are band 1(the least expensive), 30% are band 2 ,and 20% are brand 3.It's known that 25% of brand 1's VCRs require warranty repair work, whereas the corresponding percentages for bands 2 and 3 are 20% and 10%,respectively. - 1 What's the probability that a randomly selected purchaser has bought a brand 1 VCR that will need repair while under warranty? - 2 What's the probability that a randomly selected purchaser has a VCR that will need repair while under warranty? - If a customer returns to the store with a VCR that nees warranty repair work, What's the probability that its a brand 1 VCR? a brand 2 VCR ? ? brand 3 VCR?
The probability that the customer has a brand 1 VCR that needs warranty repair work is 61%, the probability that the customer has a brand 2 VCR that needs warranty repair work is 29%, and the probability that the customer has a brand 3 VCR that needs warranty repair work is 10%.
1) Probability that a randomly selected purchaser has bought a brand 1 VCR that will need repair while under warranty. It is given that 50% of VCR sales are from the least expensive band 1. The percentage of VCRs in band 1 requiring warranty repair work is 25%. Therefore, the probability that a randomly selected purchaser has bought a brand 1 VCR that will need repair while under warranty is:
P (Brand 1 and requires warranty repair) = P(Brand 1) * P(Requires warranty repair | Brand 1)= 0.50 * 0.25= 0.125 = 12.5%.2) Probability that a randomly selected purchaser has a VCR that will need repair while under warranty:
The probability can be determined by summing up the probability of each brand of VCR that requires warranty repair work. P(VCR requires warranty repair) = P(Brand 1 and requires warranty repair) + P(Brand 2 and requires warranty repair) + P(Brand 3 and requires warranty repair)= (0.50 * 0.25) + (0.30 * 0.20) + (0.20 * 0.10)= 0.125 + 0.06 + 0.02= 0.205 = 20.5%.3) Probability that the customer with a VCR that needs warranty repair work has a brand 1 VCR, brand 2 VCR, or a brand 3 VCR.
This can be determined using Bayes' Theorem.
P(Brand 1 | Warranty repair) = P(Brand 1) * P(Warranty repair | Brand 1) / P(Warranty repair)= 0.50 * 0.25 / 0.205= 0.61 or 61%.P(Brand 2 | Warranty repair) = P(Brand 2) * P(Warranty repair | Brand 2) / P(Warranty repair)= 0.30 * 0.20 / 0.205= 0.29 or 29%.P(Brand 3 | Warranty repair) = P(Brand 3) * P(Warranty repair | Brand 3) / P(Warranty repair)= 0.20 * 0.10 / 0.205= 0.10 or 10%.
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Give an example of how decisions by the supreme court, under chief justice John Marshall, strengthened federal power.
One of the most important decisions handed down by Chief Justice John Marshall and the Supreme Court was Marbury v. Madison, in 1803.
What is power in math?Power in math is the number of times a number is multiplied by itself. For example, when calculating the number 3 to the power of 4, the result is 81 — 3 multiplied by 3 multiplied by 3 multiplied by 3. When written as an equation, it would look like 3^4 = 81. Power can also be used to calculate exponents, which are the number of times a number is multiplied by itself and then added together.
This case established the concept of judicial review, the power of the Supreme Court to declare laws unconstitutional. This was a significant decision because it gave the Supreme Court the power to interpret the constitution and to determine the limits of federal power. This ruling gave the Supreme Court the ability to strike down acts of Congress and state laws that violated the constitution. This ruling effectively strengthened the power of the federal government by allowing it to enforce its laws over those of the states. The ruling in Marbury v. Madison was a major milestone in the development of federal government power and has been cited in numerous court decisions since then.
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