To find the probability of passing the quiz, we need to determine the minimum number of correct answers needed to achieve a passing grade. The probability of guessing the correct answer for each question is 1/5, so the probability of getting exactly 12 correct answers is calculated using the binomial probability formula.
Explanation:To find the probability of passing the quiz, we need to determine the minimum number of correct answers needed to achieve a passing grade. Since a passing grade is 60%, this corresponds to 12 correct answers out of 20. The probability of guessing the correct answer for each question is 1/5, so the probability of getting exactly 12 correct answers is given by the binomial probability formula:
P(X = k) = (nCk) * p^k * (1-p)^(n-k)
Using this formula, we can calculate the probability of passing the quiz.
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The problem can be solved using binomial distribution principles where the number of trials is the total number of questions (20), success is answering a question correctly, and the probability of success is 1/5 since the answers are guessed randomly. Calculate the cumulative binomial probability for getting 12 (minimum passing grade at 60%) to 20 (total questions) correct answers. This gives the probability of passing the test.
Explanation:The question asks about the probability of passing a 20 question quiz with each question having 5 possible answers, by making random guesses. To pass the quiz, a grade of 60% is required which means at least 12 questions need to be answered correctly. Since the answers are guessed randomly, the chance of picking the correct answer for each question is 1/5 or 0.2.
We can treat this problem as a binomial distribution problem, where the success is answering a question correctly. In this case, the number of trials is n=20 (the total number of questions), the number of success k is 12 or more (the minimum number of correct answers required to pass), and the probability of success p is 0.2 (since there are 5 multiple choice options per question).
Calculating the cumulative binomial probability for k=12 to n=20, we get the required probability of passing the test. Given that we have to calculate multiple probabilities and sum them, this problem might be easier to solve if you have statistical software or a calculator that can compute binomial distributions.
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Given triangle ABC is congruent to PQR,b= 3v+4 and q=8v-6 find angle b and angle q
I need help with an Algebra question. The question is in the picture. Thank you <3
Which expression gives the volume of a sphere with radius 17?
Answer:
[tex]\frac{4}{3} \pi r^{3}[/tex]
r =17
Step-by-step explanation:
Given : radius of sphere is 17
To Find : the volume of Sphere
Solution :
Volume of Sphere : [tex]\frac{4}{3} \pi r^{3}[/tex]
We are given that radius 'r' of sphere is 17
So, volume of sphere of radius 17 :
[tex]\frac{4}{3} \pi 17^{3}[/tex]
⇒ [tex]6550.6\pi[/tex]
put value of [tex]\pi[/tex] = 3.14
⇒6550.6 ×3.14
⇒20568.88
Thus , The volume of sphere is 20568.88 [tex]unit^{3}[/tex]
What is the remainder when the following polynomial division is performed? Place the answer in the proper location on the grid. Do not include parentheses in your answer.
(y4 – y3 + 2y2 + y – 1) ÷ (y3 + 1)
the remainder of this long division is 2y^2
which value below is not included in the solution set for the inequality statement? x+4≥1/2(x-3)
Answer:
Step-by-step explanation:
-13
Write the first ten terms of a sequence whose first term is -10 and whose common difference is -2.
Answer:
The sequence is: -10, -12, -14, -16, -18, -20, -22, -24, -26, and -28.
Y=-4x-1 in standard form
A rose garden is designed by joining a rectangle and a semicircle, as shown below. the rectangle is 31ft long and 19ft wide. if the gardener wants to build a fence around the garden, how many feet of fence are required? (use the value 3.14 for π , and do not round your answer. be sure to include the correct unit in your answer.)
Find the value of x for which line a is parallel to line b.
My company charges 10 cents per minute over 5 minutes when using Internet at its store. It also charges a 5 dollar fee for usage. How many minutes can I get with 10 dollars?
Will give brainliest pls help
In the graph shown, which ordered pair does NOT represent a solution to the graph?
A) (1, 7)
B) (0, 4)
C) (2, –2)
D) (3, –5)
The steps Kalee used to solve the equation –4x + 9 = 2x – 12x + 51 and the properties she used to justify each step are shown. Find and identify each error. Note: There are errors in both the mathematical work and the justifications.
Create your own equation and explain, using complete sentences, how you would solve it. Make sure you include the properties of operations and/or the properties of equality that justify each step in your explanation
b) Imagine that you earned $8,425 in one year. If the government enforces a 15% income tax, how much money would you owe in taxes at the end of the year? Show your work.
Answer:
You would owe $1,263.75 in taxes at the end of the year.
Explanation:
To calculate the amount of income tax owed, you can use the formula:
Tax amount = Income * Tax rate
Given:
Income = $8,425
Tax rate = 15%
Substitute the values into the formula:
Tax amount = $8,425 * 0.15
= $1,263.75
So, you would owe $1,263.75 in taxes at the end of the year.
Two angles of a triangle have a sum of 110. the sum of all three angles is 180 .what is the measure of the third angle
PART 2...Solve the below system of equations using the best method. Please describe the method used [substitution, graphing, elimination, etc], and give your answer in the form (x,y).
1.) 7x + 2y = 4
y = -4x + 1
2.) 3x - 4y = 1
-2x + 3y = 1
ANSWER ASAP 30 POINTS GIVEN
△MNP≅△QST
.
What is
m∠S
?
Enter your answer in the box.
Answer:- m∠S=78°.
Explanation:-
Given:- Two congruent triangles ΔMNP and ΔQST which are congruent, where m∠M=66° and m∠N=78°.
⇒The corresponding parts of ΔMNP are congruent to the ΔQST .
Therefore, all the corresponding sides of ΔMNP are congruent to the ΔQST and all the corresponding angles of ΔMNP are congruent to the ΔQST such that
MN=QS , NP=ST and MP=QT.
m∠M=m∠Q, m∠P= m∠T and m∠N=m∠S.
Substitute the value of m∠N=78°, we get
m∠S=78°.
Parallel slope of 8x+y=11
Answer:
The slope parallel to this line is -8.
Step-by-step explanation:
That's because parallel lines have the same slope. Therefore to find the slope of a parallel line, we must first find the slope of this one. On order to do that, we need to solve for y and then look at the coefficient of x.
8x + y = 11
y = -8x + 11
Therefore, we know the slope to be -8, which means the parallel slope must also be -8.
Write the equation that satisfies the given conditions. The line passes through the two points (3, -1) and (-2, 5). Choices A. 5y = 6x - 23 B. y=-6/5x +13/5 C. y = 4x - 13
To find the linear equation of a line passing through two given points, use the formula for the slope of a line to calculate the slope, then substitute this value, along with one of the given points, into the point-slope form of a line and solve for y.
Explanation:The subject of this question is the formulation of a linear equation, specifically a equation of a line passing through two given points (3, -1) and (-2, 5). The formula used to find the slope (m) of a line between two points is: m = (y2 - y1) / (x2 - x1). Use this formula to calculate the slope using these points(m = (5 - (-1)) / (-2 - 3) = -6/5) .
Next, using the point-slope form of a line, y - y1 = m(x - x1), we substitute m with the calculated slope, and (x1, y1) with one of the given points. (Let's use (3, -1), y - (-1) = -6/5(x - 3) simplifying this gives us the answer: y=-6/5x +13/5. Therefore, the correct answer is choice B: y=-6/5x +13/5.
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You have 4 shirts and 3 pairs of pants. How many different outfits can you make if you need to wear a different shirts and different pants everyday?
Answer:
you multiply 4 by 3 and you get 12 outfits
Step-by-step explanation:
Problem page two consecutive integers have a sum of 47 . find the integers
Which ratio is equivalent to 24/56?
You reach into a bag of coins and withdraw two coins without replacement. What is the probability you withdrew a nickel and then a dime if the bag held five pennies, ten nickels, and four dimes?
Answer: [tex]\dfrac{20}{171}[/tex]
Step-by-step explanation:
Given : Number of nickels in the bag = 10
Number of dimes in the bag = 4
The total number of coins in the bag =[tex]10+4+5=19[/tex]
The probability of drawing nickel :-
[tex]\text{P(nickel)}=\dfrac{10}{19}[/tex]
Total number coins left = 18
The conditional probability of drawing dime, given that a nickel is already drawn :-
[tex]\text{P(dime}|\text{nickel)}=\dfrac{4}{18}[/tex]
Now, the probability you withdrew a nickel and then a dime is given by :-
[tex]\text{P(dime and nickel)}=\text{P(dime}|\text{nickel)}\times\text{P(nickel)}\\\\=\dfrac{10}{19}\times\dfrac{4}{18}=\dfrac{20}{171}[/tex]
Now, the probability you withdrew a nickel and then a dime [tex]}=\dfrac{20}{171}[/tex]
Which type of transformation is(x, y)-->(x + 2, y -2)?
A. Rotation
B. Reflection
C. Translation
D. Dilation
If point (5,2) is rotated counterclockwise 90° about the origin, its image will be point:
A. (2, 5)
B. (2, -5)
C. (-2, 5)
D. (-5, -2)
What are the coordinates of P ’, the image of P (–4, 0) under the translation(x-3, y+6)?
A. (–7,6)
B. (7,–6)
C. (1,6)
D. (2,–3)
The image of point A after a dilation of 3 is (6,15). What was the original location of point A?
A. (2,5)
B. (9,18)
C. (3,12)
D. (18,45)
(x, y)-->(x + 2, y -2) is a translation. If point (5,2) is rotated counterclockwise 90° about the origin, its image will be point (-2, 5).
What is Graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
A transformation is a general term for four specific ways to manipulate the shape and/or position of a point, a line, or geometric figure
The given transformation is (x, y)-->(x + 2, y -2)
A translation is a type of transformation that takes each point in a figure and slides it the same distance in the same direction.
(x, y)-->(x + 2, y -2) is a translation.
If point (5,2) is rotated counterclockwise 90° about the origin, its image will be point:
The rule for a rotation by 90 about the origin is (x,y)→(−y,x)
so (-2, 5)
The coordinates of P ’, the image of P (–4, 0) under the translation(x-3, y+6)?
P (–4-3, 0+6)
P'(–7,6)
The image of point A after a dilation of 3 is (6,15) then the original location of point A is (2, 5)
Hence, (x, y)-->(x + 2, y -2) is a translation. If point (5,2) is rotated counterclockwise 90° about the origin, its image will be point (-2, 5).
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∠A and ∠B are vertical angles with m∠A=x and m∠B=5x−80 .
What is m∠A ?
Bob can do a job in 5 hours while Bill can do the same job in 8. How many hours would it take them, working together, to do this job?
Final answer:
Bob and Bill can complete the job together in approximately 3.08 hours by combining their individual rates of work, which are 1/5 and 1/8 jobs per hour respectively.
Explanation:
The question asks how long it would take Bob and Bill to complete a job if they worked together, with Bob being able to do it in 5 hours and Bill in 8 hours. To solve this, we calculate the rates at which Bob and Bill work and then combine these rates to find their combined rate.
Bob's rate is 1 job per 5 hours, or 1/5 jobs per hour. Bill's rate is 1 job per 8 hours, or 1/8 jobs per hour. When they work together, their combined rate is 1/5 + 1/8 = 8/40 + 5/40 = 13/40 jobs per hour.
To find the total time it takes for them to complete 1 job, we take the reciprocal of their combined rate: 1 / (13/40) = 40/13, which is approximately 3.08 hours.
Combining Bob and Bill's individual rates, it would take them approximately 3.08 hours to complete the job together.
Find out how long it would take Bob and Bill to do the job together:
Calculate individual rates.
Bob's rate: He can complete the job in 5 hours, meaning his rate is 1 job / 5 hours.
Bill's rate: He can complete the job in 8 hours, meaning his rate is 1 job / 8 hours.
Combine rates.
To find their combined rate, we simply add their individual rates: Combined rate = Bob's rate + Bill's rate Combined rate = (1 job / 5 hours) + (1 job / 8 hours)
Calculate combined time.
Now, divide 1 (representing the entire job) by the combined rate to find the total time they take working together: Time together = 1 / Combined rate Time together = 1 / ((1 job / 5 hours) + (1 job / 8 hours))
Simplify and express the answer.
This can be simplified to: Time together = 40 / 13 hours Time together ≈ 3.08 hours
Therefore, it would take Bob and Bill approximately 3.08 hours to complete the job together.
Jenny divided 1/2 gallon of ketchup equally into 4 smaller bottles to put on the tables in her hamburger restaurant. How much ketchup did she put in each bottle
What is the product of 3 2/3 + 14 2/5?
A right triangle has a hypotenuse of 13 cm and one leg that measures 12 cm. what is the length of the other leg?
The answer is 22.62
Hope this helps :)
The length of the other leg is 5 cm.
To find the length of the other leg of the right triangle, we can use the Pythagorean theorem, which states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.
Let's denote the length of the other leg as ( x ) cm.
According to the Pythagorean theorem:
[tex]\[ \text{hypotenuse}^2 = \text{leg}_1^2 + \text{leg}_2^2 \][/tex]
Given that the hypotenuse ( c ) is 13 cm, and one leg ( a ) is 12 cm:
[tex]\[ 13^2 = 12^2 + x^2 \][/tex]
[tex]\[ 169 = 144 + x^2 \][/tex]
Now, subtract 144 from both sides:
[tex]\[ x^2 = 169 - 144 \][/tex]
[tex]\[ x^2 = 25 \][/tex]
Taking the square root of both sides:
[tex]\[ x = \sqrt{25} \][/tex]
[tex]\[ x = 5 \][/tex]
Therefore, the length of the other leg is 5 cm.
The sum of 5 consecutive odd numbers is 145 what is the third number in this sequence
Answer:
29
Step-by-step explanation:
You don't need to know you just need to know the answer and it is 29
HELP. SEE ATTACHED Suppose the integral from 2 to 6 of g of x, dx equals 12 and the integral from 5 to 6 of g of x, dx equals negative 3, find the value of the integral from 2 to 5 of 3 times g of x, dx .
The value of the asked integral is 45
What are integrals?An integral is the continuous analog of a sum, which is used to calculate areas, volumes, and their generalizations. Integration, the process of computing an integral, is one of the two fundamental operation of calculus, the other being differentiation.
Given that, [tex]\int\limits^6_2 {g(x)} \, dx = 12[/tex] and [tex]\int\limits^6_5 {g(x)} \, dx = -3[/tex]
[tex]\int\limits^6_2 {g(x)} \, dx = 12[/tex] _ [tex]\int\limits^6_5 {g(x)} \, dx = -3[/tex] = [tex]\int\limits^5_2 {g(x)} \, dx[/tex]
Therefore,
[tex]\int\limits^5_2 {3g(x)} \, dx[/tex]
= [tex]3\int\limits^5_2 {g(x)} \, dx[/tex]
= 3[12-(-3)]
= 3(15) = 45
Hence, the value of the asked integral is 45
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