400 is the total number of toy cards in his collection. This will be the total number of toy cards in his collection if Feng keeps 324 of the toy cars on his wall which is 81% of his entire collection.
A fraction is a mathematical value that illustrates the components of a whole. In general, the whole can be any particular thing or value, and the fraction might be a portion of any quantity out of it. The top and bottom numbers of a fraction are explained by the fundamentals of fractions. The bottom number reflects the entire number of components, while the top number represents the number of chosen or coloured portions of the whole.
Based on the given conditions, formulate: 324/81%
Convert decimal to fraction: 324/81/100
Divide a fraction by multiplying its reciprocal 324 * 100 / 81
Reduce the expression to the lowest term: 4*100
Calculate the product or quotient: 400
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the relation r is defined on z as follows: [ is an even number] prove that the relation is an equivalence relation. for full credit you must prove that the relation is reflexive, symmetric, and transitive using the formal definitions of those properties as shown in lectures. you must give your proof line-by-line, with each line a statement with its justification. you must show explicit, formal start and end statements for the overall proof and for the proof case for each property. you can use the canvas math editor or write your math statements in english. for example, the universal statement that is to be proved was written in the canvas math editor. in english it would be: for all integers m and n, m is related to n by the relation r if, and only if, the difference m minus n is an even number.
Let m and n be two arbitrary integers. We want to prove that the relation R is an equivalence relation, i.e. it is reflexive, symmetric, and transitive.
Reflexive: We must show that mRm for all m ∈ Z.
Since the difference of m and m is 0, which is an even number, we have mRm.
Therefore, the relation R is reflexive.
Symmetric: We must show that if mRn, then nRm.
Let mRn, i.e., the difference of m and n is an even number.
Then the difference of n and m is also an even number.
Therefore, nRm, and the relation R is symmetric.
Transitive: We must show that if mRn and nRp, then mRp.
Let mRn and nRp, i.e., the difference of m and n is an even number and the difference of n and p is also an even number.
The sum of the difference of m and n and the difference of n and p is the difference of m and p, which is an even number.
Therefore, mRp, and the relation R is transitive.
Since the relation R is reflexive, symmetric, and transitive, it is an equivalence relation.
Conclusion: The relation R is an equivalence relation.
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steve is taking a10 question multiple choice test where each question has 4 choices. what is the probability that guesing randomally at least 8 correct
The probability of guessing randomly at least 8 correct answers in a 10 question multiple choice test where each question has 4 choices is 0.0385 or approximately 3.85%.
To find the probability of guessing at least 8 correct answers, we need to use the binomial probability formula:
P(X ≥ k) = 1 - P(X < k)
where
P(X ≥ k) is the probability of getting k or more correct answers
P(X < k) is the probability of getting less than k correct answers
n is the total number of questions in the test = 10
p is the probability of guessing the correct answer = 1/4
q is the probability of guessing the incorrect answer = 3/4
Now, we need to find the probability of getting less than 8 correct answers:
P(X < 8) = Σ P(X = k) for k = 0 to 7
P(X = k) = nCk * p^k * q^(n-k)
where nCk is the binomial coefficient for choosing k items from a set of n items.
P(X < 8) = P(X = 0) + P(X = 1) + P(X = 2) + ... + P(X = 7)
P(X = k) = nCk * p^k * q^(n-k)
P(X = 0) = 10C0 * (0.25)⁰ * (0.75)¹⁰ ≈ 0.0563
P(X = 1) = 10C1 * (0.25)¹ * (0.75)⁹ ≈ 0.1875
P(X = 2) = 10C2 * (0.25)² * (0.75)⁸ ≈ 0.2813
P(X = 3) = 10C3 * (0.25)³ * (0.75)⁷ ≈ 0.2503
P(X = 4) = 10C4 * (0.25)⁴ * (0.75)⁶ ≈ 0.1450
P(X = 5) = 10C5 * (0.25)⁵ * (0.75)⁵ ≈ 0.0586
P(X = 6) = 10C6 * (0.25)⁶ * (0.75)⁴ ≈ 0.0161
P(X = 7) = 10C7 * (0.25)⁷ * (0.75)³ ≈ 0.0028
Therefore, P(X < 8) = 0.0563 + 0.1875 + 0.2813 + 0.2503 + 0.1450 + 0.0586 + 0.0161 + 0.0028 ≈ 1.0 - 0.0385 = 0.9615 or approximately 96.15%
The probability of guessing at least 8 correct answers:
P(X ≥ 8) = 1 - P(X < 8) ≈ 1 - 0.9615 = 0.0385 or approximately 3.85%
The problem seems incomplete, it must have been...
"Steve is taking a 10-question multiple choice test where each question has 4 choices. What is the probability that guessing randomly will give him at least 8 correct answers?"
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A price was first decreased by 12%, then it was decreased again by an additional 5%. What is the percent of the total decrease?
The answer is not 17%.
Please help!!!!
10 PTS
Answer:
83.6%
Step-by-step explanation:
Let's say the original price is x
x decreased by 12% means 88% of x is left.
0.88x decreased by 5% means 95% of 0.88x is left.
This means the answer is: 0.88x * 0.95 = 0.836
The percent of the total decrease is 83.6%
Hope this helps :)
Have a great day!
An equation y= a(x+2)(x-6) and passes through (7,27) what is the value of a
Answer:
a = 3
Step-by-step explanation:
since the parabola passes through (7, 27 ) then te coordinates of the point make the equation true.
substitute x = 7 and y = 27 into the equation and solve for a
27 = a(7 + 2)(7 - 6) = a(9)(1) = 9a ( divide both sides by 9 )
3 = a
For each trigonometric expression in the lefthand column, choose the expression from the righthand column that completes a fundamental identity. Enter the appropriate letter (A,B,C,D, or E) in each blank. 1. 1; A. sin^(x); B. sin (x)+cos (x) sin(x) 2. sec^2 (x) 3. tan(x) C. cos(x) D. tan2(x) 1 cos(x) 4. cot(x) 5. 1 -cos2(x) E. sin(x)
Answer:
cot(-x) cos(-x) + sin(-x)= f(x) = (1 point) Simplify and write the trigonometric expression in terms of sine and cosine: 1 tan u +cot u = f(u) f(u) (1 point) Simplify and write the trigonometric expression in terms of sine and cosine: |(1-cos y)(1 +cos y) (f(y) f(y)= (1 point) tings sin f If sin 1+cos t tan r then A+tan t A = 1 then (1 point) If sec t - tan t = f()+tan f)= (2 points) If tan2 t - sin2 t = sind r then cos t the positive power a = the positive power b = sec r-1 A-COS 1 (1 point) If then A+cos sec 1+1 gs A = A+sin x = B-sin x then (2 points) If (tanx + sec x)2 A = В Vx- 1 (1 point) If 0 u< r/2 and x = f(u), where sec u, then f(u) = (1 point) Simplify the expression as much as possible. cos (t)-1 help (formulas) sin(t) IS (1 point) Simplify and write the trigonometric expression in terms of sine and cosine: 2+tan2 x sec x -1 (f (x) f(x)= (1 point) Simplify completely into an expression with sin(A) or cos(A) only: sin(A) tan(A) + cos(A) = (1 point) Simplify the expression as much as possible. 1 1 + 1 + sin(t) help (formulas) 1-sin(t)
sin x + cot x cos x =
f(x)
f(x)=
(1 point) Simplify and write the trigonometric expression in terms of sine and cosine:
2 + tan2 x
- 1 (f(x)
sec x
f(x) =
please help me I have attached a photo below. thanks for your time
Therefore, the slope of the line passing through the points (0,5) and (2,0) is -5/2.
What is slope?In mathematics, slope refers to the measure of steepness of a line. It is the ratio of the change in y (vertical change) over the change in x (horizontal change) between any two points on the line. The slope of a line is represented by the letter "m" and can be calculated using the slope formula: m = (y2 - y1) / (x2 - x1) where (x1, y1) and (x2, y2) are the coordinates of two points on the line.
Here,
To find the slope of a line, we use the formula:
slope = (y2 - y1) / (x2 - x1)
where (x1, y1) and (x2, y2) are any two points on the line.
Using the given coordinates, we have:
x1 = 0, y1 = 5
x2 = 2, y2 = 0
slope = (0 - 5) / (2 - 0)
slope = -5/2
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I need some help with this
Answer:
148.5 π
Step-by-step explanation:
Cone = 1/3 * base * height
1/3 * 22 * (9/2)^2 π = 148.5 π
I need help on these!
List all prime numbers in the 2023 February calendar
Answer:
6 29 25
Step-by-step explanation:
those are the prime numbers on the 2023 feb calendar
the mean height of men is about 69.2 69.2 inches. women that age have a mean height of about 63.7 63.7 inches. do you think that the distribution of heights for all adults is approximately normal? explain your answer.
Yes, the distribution of heights for all adults is approximately normal because normal distribution has a bell-shaped curve. The bell curve indicates that the majority of the data points are located around the mean, with fewer data points on either side. Furthermore, normal distribution has certain characteristics that are relevant to this question.
The average height of men is 69.2 inches, while the average height of women is 63.7 inches. Therefore, we can assume that the mean height for both genders would be approximately 66.45 inches, assuming the distribution is equal (i.e., half male, half female).
If we plot the data of both males and females together, the plot will likely resemble a bell curve as per the properties of normal distribution. Since most adults would fall within the average height range, the distribution of heights for all adults is considered approximately normal. Therefore, we can conclude that the distribution of heights for all adults is approximately normal.
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Lucia and Maria are business women who decided to invest money by buying farm land in Brazil. Lucia bought
11
1111 hectares of land in the first month, and each month afterwards she buys
5
55 additional hectares. Maria bought
6
66 hectares of land in the first month, and each month afterward her total number of hectares increases by a factor of
1. 4
1. 41, point, 4. They started their investments at the same time, and they both buy the additional land at the beginning of each month. What is the first month in which Maria's amount of land exceeds Lucia's amount of land?
Maria's amount of land first exceeds Lucia's amount of land after 3 months.
To solve this problem, we need to find out when Maria's total amount of land first exceeds Lucia's total amount of land. Let's start by writing out the formulas for the amount of land each woman has after n months
Lucia's land after n months = 11 + 5n
Maria's land after n months = 6 × 1.4^n
Now we want to find the month, n, when Maria's amount of land first exceeds Lucia's amount of land. So we need to solve the following inequality
6 × 1.4^n > 11 + 5n
We can solve this inequality by using a trial-and-error approach or by using a graphing calculator. Here's one way to solve it using trial-and-error
Let's start by plugging in n = 1 and see if Maria's land is greater than Lucia's land:
6 × 1.4^1 = 8.4
11 + 5 × 1 = 16
Since 8.4 < 16, we know that Maria's land is not greater than Lucia's land after 1 month.
Now let's try n = 2
6 × 1.4^2 = 11.76
11 + 5 × 2 = 21
Since 11.76 < 21, we know that Maria's land is still not greater than Lucia's land after 2 months.
Let's keep trying larger values of n until we find the first month when Maria's land is greater than Lucia's land:
n = 3
6 × 1.4^3 = 16.384
11 + 5 × 3 = 26
Since 16.384 > 26, we know that Maria's land is greater than Lucia's land after 3 months.
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The given question is incomplete, the complete question is:
Lucia and Maria are business women who decided to invest their money by buying farmland in Brazil. They started their investments at the same time, and each month they buy more land. Lucia bought 11 hectares of land in the first month, and each month afterwards she buys 5 additional hectares. Maria bought 6 hectares of land in the first month, and each month afterward her total number of hectares increases by a factor of 1.4. In which month will Maria's amount of land first exceed Lucia's amount of land?
Find the angle measures for m∠QRS and m∠SRT.
Answer:
its 126 and 54 hope this helps
The amount of variation in the data that is explained by the regression model is shown by the:A. Coefficient of determination.B. Dependent variable.C. Independent variable.D. None of the above.
The correct option is A. The amount of variation in the data that is explained by the regression model is shown by the Coefficient of determination.
Regression is a statistical technique used to estimate the relationship between a dependent variable and one or more independent variables. The dependent variable is the variable we are interested in understanding or predicting, while independent variables are the predictors. The goal of regression analysis is to create a mathematical equation that describes the relationship between these variables.
Regression models can be used for prediction or understanding the relationship between variables. The simplest form of regression is linear regression, which assumes a linear relationship between the dependent and independent variables. However, there are many types of regression models that can accommodate more complex relationships, including polynomial regression, logistic regression, and ridge regression.
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If u dissolve 50 grams of sugar in 30 grams of water what would the sugar concentration be?
The sugar concentration would be approximately 62.5%.
To find the concentration of sugar in the solution, we need to use the formula:
Concentration = Mass of solute ÷ Volume of solutionIn this case, the solute is sugar and the solvent is water. We are given that the mass of sugar is 50 grams and the mass of water is 30 grams. However, we need to convert the mass of water to volume since we need the volume of the entire solution to calculate the concentration.
We can assume that the density of water is 1 g/mL, so the volume of water is 30 mL. The total volume of the solution is therefore 50 mL + 30 mL = 80 mL.
Now we can use the formula to find the concentration of sugar:
Concentration = 50 g ÷ 80 mL ≈ 0.625 g/mLSo the concentration of sugar in the solution is approximately 0.625 grams per milliliter.
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a box contains 75 red marbles, 37 white marbles, and 19 blue marbles if a marble is randomly selected from the box, what's the probability that it is not blue
The probability that it the marble taken out of the box is not blue is [tex]\frac{112}{131}[/tex].
What is the probability?Probability is a branch of math that studies the chance or likelihood of an event occurring.
There are [tex]75[/tex] red marbles, [tx]37[/tex] white marbles, and [tex]19[/tex] blue marbles.
If a marble is randomly selected from the box, we have to find the probability that it is not blue.
Then the total number of marbles = [tex]75 + 37 + 19 = 131.[/tex]
The probability that a marble is not blue:-
[tex]P[/tex](Not blue) = [tex]P[/tex](Red or White)
[tex]P[/tex](Red or White) = [tex]\frac{(75 + 37)}{131}[/tex]
[tex]P[/tex](Red or White) = [tex]\frac{112}{ 131}[/tex]
[tex]P[/tex](Not blue) = [tex]1 - P[/tex](Blue)
[tex]P[/tex](Not blue) = [tex]1 - \frac{19}{131}[/tex]
[tex]P[/tex](Not blue) = [tex]\frac{112}{ 131}[/tex]
Therefore, the probability that a marble selected from the box is not blue is [tex]\frac{112}{131}[/tex].
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below is survey results describing the survival rate and life expectancy in a certain population. p(n) stands for the probability of a new-born to reach the age of n years. n 55 60 65 70 p(n) 0.903 0.882 0.742 0.657 according to the given survey, answer the following questions: what is the probability of a 65 years old man to reach the age of 70? you can express your answer as a fraction, decimal, or a percentage. if you asnwer in decimal, include at least 3 digits after the decimal point. if you answer is a percentage, make sure to include a % sign in your answer. symbolic expression given that the probability that a man who just turned 70 will die within the next 5 years is 0.176, what is the probability for a man to survive till his 75th birthday, i.e., what is p(75)? you can express your answer as a fraction, decimal, or a percentage. if you asnwer in decimal, include at least 3 digits after the decimal point. if you answer is a percentage, make sure to include a % sign in your answer.
The probability that a 65-year-old man will survive to reach the age of 70 is 88.4%, and also the probability man to survive till his 75th birthday is approx.59.952%.
The probability of a 65-year-old man reaching the age of 70 is the probability of surviving from age 65 to age 70, which is given as
p(70)/p(65) ⇒ 0.657/0.742 ≈ 0.88544 or 88.544%.
The probability of a man who just turned 70 dying within the next 5 years is 0.176.
Therefore, the probability of surviving for the next 5 years after turning 70 is
⇒ 1 - 0.176 ⇒ 0.824.
Thus, the probability of a man surviving till his 75th birthday is the probability of surviving from age 70 to age 75, which is given as
p(75)/p(70) ⇒ 0.657/0.903 × 0.824
≈ 0.59952 or 59.952%.
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This is Section 3.2 Problem 2: The cost function, in dollars, for producing $x$ items of a certain brand of barstool is given by C(x)-0.01x3-0.6x2+13x+200 (a) C(x).03r- .12x +13 (b) MC(50)-82 dollars per barstool . It approximately represents the cost of producing the 50 th barstool (c) The exact cost of producing the 51th barstool is C 51 -c50 28.91 dollars (d) Using C(50) and MC (50), the total cost of producing 53 barstools is approximately -Select
In the following question, the Total cost to production 50 barstools: $1,200 Total cost to produce 51 barstools: $1,228.91 "Total cost to produce 52 barstools: $1,258.44" Total cost to produce 53 barstools: $1,288.59 Therefore, the approximate total cost of producing 53 barstools is $559.15.
The cost function for producing $x$ items of a certain brand of barstool is given by C(x)=0.01x3-0.6x2+13x+200.
(a) C(x)=0.03x3- 0.12x2+13
(b) MC(50)=-82 dollars per barstool.
It approximately represents the cost of producing the 50th barstool.
(c) The exact cost of producing the 51st barstool is C51=C50+MC(50)=$28.91 dollars.
(d) Using C(50) and MC (50), the total cost of producing 53 barstools is approximately C50+(53-50) MC(50)=$229.82.
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I would like to know the answer
Answer:
[tex] \frac{3}{2} {x}^{8} [/tex]
Step-by-step explanation:
[tex] \frac{9 {x}^{16} }{6 {( {x}^{2} )}^{3}{x}^{2} } = \frac{9 {x}^{16} }{6 {x}^{6} {x}^{2} } = \frac{9 {x}^{16} }{6 {x}^{8} } = \frac{3}{2} {x}^{8} [/tex]
4. A parking lot in the shape of a trapezoid has an area of 2,930. 4 square meters. The length of one base is 73. 4 meters, and the length of the other base is 3760 centimeters. What is the width of the parking lot? Show your work
The width of the automobile parking space is 52.8 meters.
First, we want to convert the duration of the second one base from centimeters to meters
3760 cm = 37.6 m
Subsequent, we're suitable to use the system for the vicinity of a trapezoid
A = ( b1 b2) h/ 2
In which b1 and b2 are the lengths of the two bases, h is the height( or range) of the trapezoid, and A is the area.
Substituting the given values, we have
= (73.437.6) h/ 2
= 111h/ 2
Multiplying both angles through 2 and dividing by 111, we get
h = 52.8
Hence, the width of the automobile parking space is 52.8 meters.
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In each expression below the numbers under the root sign all add to the same number, 10. Determine which expression is greatest. How?
a) √7+ √3
b) √6+ √4
c) √8+ √2
Answer:
Step-by-step explanation:
I think a calculator is the only way to solve this question:
[tex]\sqrt{7} +\sqrt{3} = 2.96\\\\\sqrt{6} +\sqrt{4} = 2.54\\\\\sqrt{8} +\sqrt{2} =3.07[/tex]
So (c) is the greatest.
Prove the following statement directly from the definition of divisibility. For all integers a, b, c, and d, if aſc and bld then ab|cd. Proof: Let a, b, c, and d be any integers such that alc and b|d. Then by definition of divisibilityq c= ar and d = bs for some integers r and s. Then cd equals the product of ab and a number that can be written in terms of r and s as follows: cd = ab: , which is an integer because products A of integers are integers. (Simplify your answer completely.) Thus cd = ab · (an integer), and so ablcd by definition of divisibility.
The cd = ab · (an integer), and so ab | cd by definition of divisibility.
The question wants us to prove the following statement using the definition of divisibility. For all integers a, b, c, and d, if aſc and bld, then ab|cd.Definition of divisibility: Let a and b be integers. We say that b divides a or b is a divisor of a if there exists an integer k such that a = bk.
If b divides a, then we write b | a.Let a, b, c, and d be any integers such that alc and b | d. Then by definition of divisibility, c = ar and d = bs for some integers r and s. Then cd equals the product of ab and a number that can be written in terms of r and s as follows:cd = ab · rs, which is an integer because products of integers are integers.
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You have $3,200 to invest in stocks. You purchase shares for $11.95/sh. You decide to sell the stock at $11.87/sh?
How much did you net with this transaction?
A $21.36
B $30.71
C $11.87
D $0.08
Therefore, the net result of the transaction is a loss of $21.36. The answer is A) $21.36.
What is selling price?Selling price refers to the price at which a product or service is sold to customers or clients. It is the amount of money that a buyer pays to the seller in exchange for the product or service. The selling price is usually higher than the cost of producing or acquiring the product or service, and the difference between the selling price and the cost is the profit earned by the seller. In some cases, the selling price may also include additional charges such as taxes, shipping fees, or handling fees.
by the question.
To calculate the net result of the transaction, we need to determine how many shares were purchased with the $3,200 investment.
$3,200 divided by $11.95/sh = approximately 267.36 shares (rounded to the nearest hundredth)
Therefore, the total cost of purchasing 267 shares at $11.95/sh is:
267 shares x $11.95/sh = $3,195.65
The total revenue from selling 267 shares at $11.87/sh is:
267 shares x $11.87/sh = $3,174.29
To determine the net result of the transaction, we subtract the total revenue from the total cost:
$3,174.29 - $3,195.65 = -$21.36
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Write the expression in complete factored
form.
b2(p + 3) + q(P + 3) =
Annie's Pie Shop has 12 pies for sale, including 4 chocolate cream pies.
What is the probability that a randomly selected pie will be a chocolate cream pie?
Write your answer as a fraction or whole number.
The best solution gets brainlist
Answer: 1/3
Step-by-step explanation:
The probability of selecting a chocolate cream pie can be found by dividing the number of chocolate cream pies by the total number of pies:
Probability of selecting a chocolate cream pie = Number of chocolate cream pies / Total number of pies
Probability of selecting a chocolate cream pie = 4 / 12
Simplifying this fraction by dividing the numerator and denominator by 4 gives:
Probability of selecting a chocolate cream pie = 1/3
Therefore, the probability of selecting a chocolate cream pie from Annie's Pie Shop is 1/3.
Nine from shared 12 pounds of pecans equals how many pounds of pecans does each friend get
Answer:
Each student's share is 1 1 3 1\dfraction{1}{ 3 } 131 pounds of pecans.
Suppose the entire pink arc measures 200 degrees and the entire blue arc measures 50 degrees, what would be measure of the manilla angle be?
Therefore, the measure of the manila angle is 110 degrees.
What is degree?The term "degree" can have several different meanings depending on the context. Here are a few possibilities:
Academic degree: This refers to the title or certificate awarded to a student upon the completion of a course of study at a college, university, or other educational institution. Examples of academic degrees include bachelor's degrees, master's degrees, and Doctoral degrees.
by the question.
Assuming that the pink, blue, and manila arcs are all part of the same circle, the sum of their measures must be 360 degrees.
Let's denote the measure of the manila arc as x degrees. Then we can set up an equation to solve for x:
200 degrees (pink arc) + 50 degrees (blue arc) + x degrees (manila arc) = 360 degrees
Simplifying the equation, we can solve for x:
x = 360 degrees - 200 degrees - 50 degrees
x = 110 degrees
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for the area of a square to triple, the new side lengths must be the length of the old sides multiplied by:
To triple the area of a square, the new side lengths must be the length of the old sides multiplied by the square root of three (√3).
What is a square?A square is a two-dimensional (2D) geometric shape that has four equal sides, and its angles are right angles, i.e., they measure 90°. The perimeter of a square is the sum of the length of all its sides, and its area is the product of its length and width. The diagonals of a square are equal in length and intersect at right angles.
To triple the area of a square, you need to increase the length of the square's sides by a certain factor. That factor is the square root of three, which is approximately 1.732. This implies that if the old side length of the square is "x," then the new side length of the square will be 1.732x.
This ratio of new side length to old side length of the square will triple the square's area (since (1.732x)² = 3x²). Therefore, to triple the area of a square, the new side lengths must be the length of the old sides multiplied by the square root of three (√3).
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Jack earns $15.00 per hour plus $2.50 for each pizza delivery. The expression
15h + 2.50d can be used to find the total earnings after h hours and d deliveries have been made. How much money will Jack earn after working 15 hours and making 8 deliveries?
Answer:
$245
Step-by-step explanation:
15h+2.50d
= 15(15)+2.50(8)
= 225+20
= $245
Multiple-choice questions each have five possible answers(a,b,c,d,e),one of which is correct. Assume that you guess the answers to 3 such problem:a. Use the multiplication rule to find the probability that the first 2 guesses are wrong and the 3rd is correct.b. Beginning with 2wrong and 1 correct,(WWC), make a complete list of all possibilities of 2 wrong and 1 correct, then find the probability for each.c. Based on the preceding results, what is the probability of getting exactly one correct answer when 3 guesses are made?
a. The probability of guessing a wrong answer is 4/5
Since there are three guesses, the probability of the first 2 guesses being wrong and the 3rd being correct can be calculated using the multiplication rule as follows: P(2 wrong and 1 correct) = (4/5)^2 * 1/5 = 0.128.
b. The complete list of possibilities for 2 wrong and 1 correct is: WWC, WCW, CWW.
The probability of each can be calculated using the multiplication rule as follows: P(WWC) = (4/5)^2 * 1/5 = 0.128, P(WCW) = (4/5) * (1/5) * (4/5) = 0.128, and P(CWW) = 1/5 * (4/5)^2 = 0.128.
c. The probability of getting exactly one correct answer when 3 guesses are made is the sum of the probabilities of the three possible outcomes of 2 wrong and 1 correct, which is 0.128 + 0.128 + 0.128 = 0.384.
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Making r the subject of formula in this equation A = V²/r gives r = V²/A.
How to calculate centripetal acceleration?In Mathematics and Science, the centripetal acceleration of a physical object (body) can be calculated by using the following mathematical expression:
A = V²/r
Where:
A represent the centripetal acceleration.r represent the distance (radius) from a circular track.V represent the velocity of a physical object (body).In this exercise, you are required to make radius (r) the subject of formula. Therefore, by making radius (r) the subject of formula, we have the following:
Radius, r = V²/A
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