Answer:
C
Step-by-step explanation:
Third letter of English lexicon
Foot Locker bought Nike's latest shoes for $140. It marked them up by 30%. what price did the foot locker sell Nike's latest shoes for?
Answer:
Sold for $182 Marked up $42
Step-by-step explanation:
just multiply 140 by 30% which is .3 as a decimal
when multiplied you get 42 so just add that to the original price and you get 182
The density, d, of an object can be found by using the formula d=\(\frac{m}{v}\), where m is the mass of the object and v is its volume. What is the density of an object that has a mass of 73,430 kilograms and a volume of 7 \(m^{3}\)
The density of an object is 10490kg/m^3.
How to find the density?Density is like rate. It tells you how much of a thing is available for each unit other thing which contains the first thing.
Density = (Total amount available)/(total space which contains that amount)
Given;
The mass of object= 73,430 kilograms
The volume of object= 7m^3
Now
D=mass/volume
D=73430/7
D=10490
Therefore, the density will be 10490kg/m^3.
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Researchers try to gain insight into the characteristics of a ______ population by examining a of the population. Select one:
a. Description
b. Model
c. Replica
d. Sample
Researchers try to gain insight into the characteristics of a sample population by examining a sample of the population.
A sample is a subset of individuals or units taken from a larger population. Researchers use sampling methods to select a representative group of individuals from the population they are interested in studying. By studying the sample, researchers can make inferences and draw conclusions about the characteristics, behaviors, or trends that may exist within the entire population.
The goal of sampling is to obtain a sample that accurately represents the population in terms of its relevant characteristics. Researchers carefully select their samples to ensure that they are representative and minimize bias. This allows them to generalize the findings from the sample to the larger population with a certain level of confidence.
By examining a sample, researchers can collect data, analyze patterns, and draw conclusions about the population as a whole. This approach is more feasible and practical than attempting to study the entire population, especially when the population is large or geographically dispersed.
Therefore, researchers use samples to gain insight into the characteristics of a population, making option d. "Sample" the correct answer.
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if any particular experimental run involves the use of a single temperature, pressure, and catalyst, how many experimental runs are possible? runs (b) how many experimental runs are there that involve use of the lowest temperature and two lowest pressures? runs (c) suppose that four different experimental runs are to be made on the first day of experimentation. if the four are randomly selected from among all the possibilities, so that any group of four has the same probability of selection, what is the probability that a different catalyst is used on each run? (round your answer to four decimal places.)
The probability of using a different catalyst in each of the four experimental runs is C(n3, 4) / C(n1 * n2 * n3, 4) (rounded to 4 decimal places).
a) The number of experimental runs possible depends on the number of temperatures, pressures, and catalysts available for use.
b) The number of experimental runs involving the lowest temperature and two lowest pressures depends on the specific values of these factors and the number of options available for each.
c) The probability of using a different catalyst on each of the four experimental runs can be calculated as follows:
Let's assume that there are n different catalysts available for use.
The number of ways to select the first catalyst is n options.
The number of ways to select the second catalyst is (n-1) options since one of the options have already been used.
The number of ways to select the third catalyst is (n-2) options, and
The number of ways to select the fourth catalyst is (n-3) options.
The total number of ways to select 4 catalysts out of n is n! / (n-4)!
The probability of selecting a different catalyst for each run can be calculated as:
(n options * (n-1) options * (n-2) options * (n-3) options) / (n! / (n-4)!) = (n * (n-1) * (n-2) * (n-3)) / n!
Rounding the answer to 4 decimal places, the probability is (n * (n-1) * (n-2) * (n-3)) / n!.
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need help on this question
Answer:
3/7
Step-by-step explanation:
This is because you need to count the tick marks to 1.
That should be 7.
Then you count to the red dot.
That should be 3.
3/7
Answer: 3/7
Step-by-step explanation:
There are 7 segments that separates 1 from 0, therefore our denominator of the fraction is 7.
The red dot is on the third tick, making our numerator 3.
Our answer is 3/7, or \(\frac{3}{7}\)
refer to the market for good x. p0=$15, pa=$21, p*=$31, pb=$44, p1=$57, q0=10, q*=30, q1=50, and q2=70. how many units are exchanged when the price is $44?
At a price of $44, 30 units of good x are exchanged. This can be calculated by subtracting the quantity supplied at price $15 (q0=10) and the quantity supplied at price $31 (q*=30) from the quantity demanded at price $44 (q1=50).
At a price of $44, the quantity of good x that is exchanged can be calculated by subtracting the quantity supplied at price $15 (q0=10) and the quantity supplied at price $31 (q*=30) from the quantity demanded at price $44 (q1=50). The quantity supplied at price $15 is 10 units, the quantity supplied at price $31 is 30 units, and the quantity demanded at price $44 is 50 units. Therefore, the quantity exchanged at price $44 is 50 units minus 10 units (q0) minus 30 units (q*) which equals 10 units. Thus, the quantity of good x exchanged at price $44 is 10 units.
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A point with coordinates (a, b) is plotted on a coordinated plane. The values of a and b can be any positive or negative integer.
What must be true about the point ( a, b)?
A) It is flipped across the
y- axis from the original point
B) it is flipped across the
x-axis from the original point
C) it is in the quadrant diagonal to the original point
D) it is in the same quadrant as the original point, but in a different location
Answer:
I think it's x-axis.
Step-by-step explanation:
but me could me wrong
Answer:
The correct answer to this question would be C.
Step-by-step explanation:
took the test. Hope this helps!
Solve for x and y.?? having trouble
Answer:
c
Step-by-step explanation:
took the test
Answer:
Option C is the correct answer
\( x = 34 \\y=17\sqrt3\)
Step-by-step explanation:
\( \sin \: 30 \degree = \frac{17}{x} \\ \\ \frac{1}{2} = \frac{17}{x} \\ \\ x = 17 \times 2 \\ \\ x = 34 \\ \\ \tan \: 30 \degree = \frac{17}{y} \\ \\ \frac{1}{ \sqrt{3} } = \frac{17}{y} \\ \\ y = 17 \sqrt{3} \)
Find the cosine of ZE.
37
E
D
35
12
с
Step-by-step explanation:
\( \cos(e) = \frac{12}{37} = 0.324\)
Annual snowfall in Anchorage, Alaska, is normally distributed with a mean height of 76 inches and a standard deviation of 4.7 inches. What is the probability this year that it will snow between 71.4 and 80.7 inches in Anchorage?
Using the Empirical Rule, it is found that there is a 68% probability this year that it will snow between 71.4 and 80.7 inches in Anchorage.
What is the Empirical Rule?It states that, for a normally distributed random variable:
Approximately 68% of the measures are within 1 standard deviation of the mean.Approximately 95% of the measures are within 2 standard deviations of the mean.Approximately 99.7% of the measures are within 3 standard deviations of the mean.In this problem, the mean height of 76 inches and a standard deviation of 4.7 inches, hence 71.4 and 80.7 inches is within 1 standard deviation of the mean, that is, there is a 68% probability this year that it will snow between 71.4 and 80.7 inches in Anchorage.
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250 pounds = how many tons
The metric unit from pounds to tons is 250 pounds = 0.125 tons
Converting the metric unit from pounds to tonsFrom the question, we have the following parameters that can be used in our computation:
250 pounds = how many tons
As a general rule, we have
1 pound = 0.0005 tons
Multiply both sides of the equation by 250
So, we have
250 * 1 pound = 0.0005 tons * 250
Evaluate the products
250 pounds = 0.125 tons
Hence, the conversion is 250 pounds = 0.125 tons
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19) Solve for "x" using an inverse operation.
3x = 48
20) Solve for "x" using an inverse operation.
4x = 64
The value of x in the equation 3x = 48 is 16 and for equation 4x = 64 is 16.
What is equation ?
A mathematical expression with an equals sign is referred to as an equation. Algebra is widely used in equations. When performing calculations but unsure of the precise amount, algebra is used. A lot of specialists, such as air traffic controllers, architects, computer programmers, and carpenters, employ equations on a daily basis.
The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.
A mathematical statement known as an equation is made up of two expressions joined together by the equal sign.
3x = 48
As it is multiplication we divide it by 3
3x / 3 = 48 / 3
x = 16
4x = 64
As it is multiplication we divide it by 4
4x / 4 = 64 / 4
x = 16
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what rule of thumb can be used to determine whether a difference in study outcomes is statistically significant?
A common rule of thumb is to use the p-value of a statistical test to determine whether a difference in study outcomes is statistically significant.
If the p-value is less than the pre-determined level of significance (often set at 0.05), then the difference is considered statistically significant. This means that there is strong evidence to suggest that the observed difference is not due to chance alone, but rather a result of the variables being studied. However, it's important to keep in mind that statistical significance does not necessarily imply practical significance, and other factors such as effect size and clinical relevance should also be considered when interpreting study outcomes.
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a. suppose you obtain a chi-square statistic of 3.86. Are your results statistically significant if the critical value obtained from the distribution of chi-square is 6.63 with an α Level of .01?
b. What about with a chi-square statistic of 67.81. Are the results significant if a critical value of the distribution is 3.84 with α level of .05?
a. The chi-square statistic is not significant at the α level of .01.
b. The chi-square statistic is significant at the α level of .05.
How to determine chi-square statistic is not significant at α level of .01?a. With a chi-square statistic of 3.86 and a critical value of 6.63 at α level of .01, we can compare the two values.
Since 3.86 < 6.63, this means that the chi-square statistic is not significant at the α level of .01.
In other words, the result is not statistically significant and we fail to reject the null hypothesis.
How to determine chi-square statistic is significant at α level of .05. ?b. With a chi-square statistic of 67.81 and a critical value of 3.84 at α level of .05, we can again compare the two values.
Since 67.81 > 3.84, this means that the chi-square statistic is significant at the α level of .05.
In other words, the result is statistically significant and we reject the null hypothesis.
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Help!! View picture:)
The truth table for the statement is
r s ¬r s ∧ ¬r
---------------------
T T F F
T F F F
F T T T
F F T F
How to construct a truth table for the statementFrom the question, we have the following parameters that can be used in our computation:
s ∧ ¬r
To construct the truth table, we make use of the following notations
s, r and ¬r
The truth table for the statement s ∧ ¬r is then represented as follows:
r s ¬r s ∧ ¬r
---------------------
T T F F
T F F F
F T T T
F F T F
The condition for ∧ is that it is true if both statements are true
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What is 2/5 divided by 5/7 in fraction form, not decimal
Answer:
\(\frac{14}{25}\)
Step-by-step explanation:
Pre-SolvingWe want to know what is \(\frac{2}{5}\) ÷ \(\frac{5}{7}\), and we want to write it as a fraction.
When dividing fractions, we actually multiply the first fraction by the reciprocal of the second.
In other words, we "flip" the second fraction and multiply it by the first.
SolvingTo get the reciprocal / "flip" a fraction, we put the number that is the numerator on the denominator, and the number that is on the denominator onto the numerator.
So, for \(\frac{5}{7}\), its reciprocal is \(\frac{7}{5}\).
Now, we multiply \(\frac{2}{5}\) by \(\frac{7}{5}\).
\(\frac{2}{5}\) × \(\frac{7}{5}\) = \(\frac{14}{25}\)
The fraction cannot be reduced, so the answer is \(\frac{14}{25}\).
Please help asap! Due tonight!
Answer:
Second choice, 3
Step-by-step explanation:
a^2 + b^2 = c^2
4^2 + b^2 = 5^2
16 + b^2 = 25
b^2 = 9 (square root both sides)
b = 3
What is the importance and advantage of using graph representation when organizing your data?
The importance and advantage of using graph representation when organizing your data are that it makes data presentable, summarizing, better way of comparison of data.
An organized diagram or pictorial representation of the relationship between values or data is referred to as a graph. it is a a diagram that depicts a variable's variation in comparison to that of one or more other variables, such as a series of points, lines, line segments, curves, or areas.
The following are the three advantages of graphs:
It makes data look good and makes it easy to understand.It helps to concisely summarize the data.Better data comparison is made possible by it.Know more about graphs here: https://brainly.com/question/17267403
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Solve the following equations:
Solving multi-step equations
1) 3x+7+ 6x = 34
2) b-9+6b=30
Volunteer drivers are needed to bring 80 students to the championship baseball game. Drivers either have cars, which can seat 4 students, or vans, which can seat 6 students. The equation LaTeX: 4c+6v=804 c + 6 v = 80 describes the relationship between the number of cars, LaTeX: cc, and number of vans, LaTeX: vv, that can transport exactly 80 students. Select all statements that are true about the situation. Group of answer choices
A. If 2 cars go, then 2 vans are needed.
B. LaTeX: c=14 c = 14 and LaTeX: v=4 v = 4 are a pair of solutions to the equation.
C. If 6 cars go and 11 vans go, there will be extra space
D. 10 cars and 8 vans isn't enough to transport all the students.
E. If 20 cars go, no vans are needed.
F. 8 vans and 8 cars are numbers that meet the constraints in this situation.
Answer:
B. c =14 v = 4 are a pair of solutions to the equation.
E. If 20 cars go, no vans are needed.
F. 8 vans and 8 cars are numbers that meet the constraints in this situation.
Step-by-step explanation:
Volunteer drivers are needed to bring 80 students to the championship baseball game. Drivers either have cars, which can seat 4 students, or vans, which can seat 6 students. The equation
4 c + 6 v = 80
We are to find what can transport exactly 80 students.
We compare the options till we get our correct answer.
A. If 2 cars go, then 2 vans are needed.
4 c + 6 v = 80
c = number of cars needed
v = number of vans needed
Hence,
4(2) + 6(2)
8 + 12 ≠ 80
20≠ 80
Option A is wrong
B. c =14 v = 4 are a pair of solutions to the equation.
4 c + 6 v = 80
c = number of cars needed
v = number of vans needed
Hence,
4(14) + 6(4) = 80
56 + 24 = 80
80 = 80
Option B is correct
C. If 6 cars go and 11 vans go, there will be extra space
4 c + 6 v = 80
c = number of cars needed
v = number of vans needed
Hence,
4(6) + 6(11)
24 + 66
110 > 80
Option C is wrong, there would be no space left
D. 10 cars and 8 vans isn't enough to transport all the students.
4 c + 6 v = 80
c = number of cars needed
v = number of vans needed
Hence,
4(10) + 6(8)
40 + 48
88 > 80
Option D is wrong
E. If 20 cars go, no vans are needed.
4 c + 6 v = 80
c = number of cars needed
v = number of vans needed
Hence,
4(20) + 6(0) = 80
80 + 0 = 80
80 = 80
Option E is correct
F. 8 vans and 8 cars are numbers that meet the constraints in this situation.
4 c + 6 v = 80
c = number of cars needed
v = number of vans needed
Hence,
4(8) + 6(8) = 80
32 + 48 = 80
80 = 80
Option F is correct
Therefore the statements in options B, E and F are the only correct statement for the equation 4 c + 6 v = 80
If the third of 7 consecutive numbers is 12,what is their sum?
Answer:
89
Step-by-step explanation:
9+10+12+13+14+15+16 = 89
consecutive means in order, 1 by 1.
Answer:91
Step-by-step explanation: 10+11+12+13+14+15+16=91
An architect has his floor plan for a house he is building. The foundation for the house has already been laid and measures 300 feet. If the scale on husband drawing is 25 ft = 1in, how long is the house on this floor plan
Answer:
12
Step-by-step explanation:
You divide 300 by 25
300/25=12
His house is 12 in long on the floor plan
2. The diagram above shows a wooden structure in the form of a cone mounted on hemispherical base. The vertical height of the cone is 24cm and the base 7cm. Calculate correct to 3 significant figures the surface area of the structure. (Take π= 22/7)
The surface area of the shape is 1166 square meters
How to determine the surface area of the shapeFrom the question, we have the following parameters that can be used in our computation:
Height of cone, h = 24 cm
Radius, r = 7 cm
Also, see attachment for the diagram
The surface area of the shape is calculated as
Surface area = Area of cone + Area of hemisphere
So, we have
Surface area = πr(r + √(r² + h²)) + 3πr²
Substitute the known values in the above equation, so, we have the following representation
Surface area = 22/7 * 7 * (7 + √(7² + 24²)) + 3 * 22/7 * 7²
Evaluate
Surface area = 1166
Hence, the surface area is 1166 square meter
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What is 0.02349 written in standard form to 3 significant figures
\( \: \: \)
b. 2.34 × 10 ^-20.0234 written as scientific notation is 2.349 × 10-2.hope it helpsAnswer:
b. 2.34 x 10 ^-2
Step-by-step explanation:
0.0234 written as scientific notation is 2.349 x 10-2
I need this asap give me the right answer
Answer:
Its 320 i think its so many numbers my eyes cant keep up
Step-by-step explanation:
just add em all up
write the standard form of the euation of the line through the given point with the given 15) through: (3,3) slope = -1/2
The standard form of the equation of the line through the point (3,3) with slope -1/2 is y = -1/2x + 9/2.
The standard form of the equation of a line is y = mx + b, where m is the slope and b is the y-intercept.
We are given a point (3,3) and a slope of -1/2, we can use the point-slope form to write the equation of the line as follows -
y - 3 = -1/2(x - 3)
To convert this equation to standard form, we can simplify the equation as follows -
y - 3 = -1/2x + 3/2
y = -1/2x + 3 + 3/2
y = -1/2x + 9/2
Hence, the standard form of the equation of the line through the point (3,3) with slope -1/2 is y = -1/2x + 9/2.
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The average grade on a Probability Statistics Final Exam is 77%. a) Use Markov's inequality to estimate the probability that some will score an 83% or lower on the Final Exam. b) The average grade on a Probability Statistics Final Exam is 77%, and the variance of the Final Exam is known to be 9%. Its distribution is unknown. Use Chebyshev's inequality to obtain an interval that includes 97.5% of stack sizes of this assembler. c) Compare the results in (b) with what you would get if you knew that the distribution of the Final Exam grades was a normal distribution. Problem 5) The average grade on a Probability Statistics Final Exam is 77% with a known variance of 9%. APUS wants to design a criterion that requires as least 90% of all Probability Final Exams not differ from the mean by more than 4.5% a) Use Chebyshev's inequality to establish whether the design criterion is satisfied. b) Would the design criterion be satisfied if it were known that the retrieval time is normally distributed with a mean of 77% and a variance of 9% ?
At least 90% of the retrieval time should be within 3.465 of the mean. This criterion would be satisfied if the retrieval time is normally distributed with a mean of 77% and a variance of 9%.
(a)We need to estimate the probability that someone will score an 83% or lower on the Final Exam using Markov's inequality. Markov's inequality states that for a non-negative variable X and any a>0, P(X≥a)≤E(X)/a.Assuming that E(X) is the expected value of X. We are given that the average grade is 77%.
Therefore E(X) = 77%.P(X≤83) = P(X-77≤83-77) = P(X-77≤6).Using Markov's inequality,P(X-77≤6) = P(X≤83) = P(X-77-6≥0) ≤ E(X-77)/6 = (σ^2/6), where σ^2 is the variance.So, P(X≤83) ≤ σ^2/6 = 9/6 = 3/2 = 1.5.So, the probability that someone will score an 83% or lower on the Final Exam is less than or equal to 1.5.
(b)Using Chebyshev's inequality, we can find the interval that includes 97.5% of stack sizes of this assembler. Chebyshev's inequality states that for any distribution, the probability that a random variable X is within k standard deviations of the mean μ is at least 1 - 1/k^2. Let k be the number of standard deviations such that 97.5% of the stack sizes lie within k standard deviations from the mean.
The interval which includes 97.5% of stack sizes is given by mean ± kσ.Here, E(X) = 77 and Var(X) = 9, so, σ = sqrt(Var(X)) = sqrt(9) = 3.Using Chebyshev's inequality, 1 - 1/k^2 ≥ 0.9750. Then, 1/k^2 ≤ 0.025, k^2 ≥ 40. Therefore, k = sqrt(40) = 2sqrt(10).The interval which includes 97.5% of stack sizes is [77 - 2sqrt(10) * 3, 77 + 2sqrt(10) * 3] ≈ [69.75, 84.25].
(c)If we assume that the distribution of Final Exam grades is a normal distribution, then we can use the Empirical Rule which states that approximately 68% of the data falls within 1 standard deviation of the mean, 95% of the data falls within 2 standard deviations of the mean, and 99.7% of the data falls within 3 standard deviations of the mean.
Therefore, if the Final Exam grades are normally distributed with a mean of 77% and a variance of 9%, then 97.5% of the stack sizes would fall within 2 standard deviations of the mean.
The interval which includes 97.5% of stack sizes would be given by [77 - 2 * 3, 77 + 2 * 3] = [71, 83].(a)Using Chebyshev's inequality, we can establish whether the design criterion is satisfied or not. Let μ be the mean of the Probability Final Exams, and σ be the standard deviation of the Probability Final Exams. Let X be a random variable that denotes the probability of the Final Exam that is within 4.5% of the mean. Then, P(|X - μ|/σ ≤ 0.045) ≥ 0.9.Using Chebyshev's inequality, we have,P(|X - μ|/σ ≤ 0.045) ≥ 1 - 1/k^2, where k is the number of standard deviations of the mean that includes at least 90% of the stack sizes.
Then, 1 - 1/k^2 ≥ 0.9, 1/k^2 ≤ 0.1. Thus, k ≥ 3. Therefore, at least 90% of the Probability Final Exams should be within 3 standard deviations of the mean by Chebyshev's inequality.So, P(|X - μ|/σ ≤ 0.045) ≥ 0.9.(b)If we know that the retrieval time is normally distributed with a mean of 77% and a variance of 9%, then we can use the Empirical Rule to find the percentage of retrieval time that is within 4.5% of the mean.
According to the Empirical Rule, 68% of the data falls within 1 standard deviation of the mean, 95% of the data falls within 2 standard deviations of the mean, and 99.7% of the data falls within 3 standard deviations of the mean. So, 4.5% of the mean is 4.5% of 77 = 3.465. Therefore, at least 90% of the retrieval time should be within 3.465 of the mean. This criterion would be satisfied if the retrieval time is normally distributed with a mean of 77% and a variance of 9%.
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PLS HELP!! What is the radius of a shape with a circumference of 8.9?
Answer: 1.42
Step-by-step explanation:
, I desperately need the answer to this.
Answer:
slope = 3
Step-by-step explanation:
Let's take two points, (0,0), (1,3)
slope = change of y/change of x
s = 3 - 0/ 1 - 0
s = 3/1
s = 3
Create a real-world problem that represents 2/3 and 2/5.
Answer: Hi!
Sara had 2/3 of a piece of cake. Jasmine had 2/5 of a piece of cake. How much cake did Sarah and Jasmine have in total?
Hope this helps!
Answer:
If Kaylah had 2/5 of a pizza, and Allia had 2/3 of a pizza how much would they eat together?