Step-by-step explanation:
20 men work 8 hours a day for 18 days.
that are
20×8×18 = 2880 work hours to complete that work.
if 24 men work 5 hours a day, that are
24×5 = 120 work hours per day.
we still need to do the total 2880 work hours.
so, they will need
2880 / 120 = 24 days to complete the work.
The vertex angle of an isosceles triangle measures 20 degrees more than twice the measure of one of its base angles. How many degrees are there in a base angle of this triangle?
A.) 20
B.) 40
C.) 42
D.) 100
Answer:
40
If it is wrong please comment.
3. If 480 movie tickets were sold on Saturday,
how many were child tickets?
Child= 15%
Adult= 75%
Senior=10%
Answer:
72 child
369 adult
48 senior
How do I solve this
Corbins car payment is $289. This is $37 les than 1/3 of his monthly income. What is corbins monthly income
A serving of chickpeas contains 2,150 milligrams of potassium. How many grams of
potassium is that?
A serving of chickpeas contains
grams of potassium.
Answer: 109 mg
Step-by-step explanation:
Please help I’ll mark brainliest
Answer:
y= x-3
Step-by-step explanation:
use the slope formula which is y= m(slope)x + b(y intercept)
The slope is one, so you can just leave it as x, and the y intercept is -3 so you can plus that into the b.
Hope this helps :)
Select the Shuttlecock. Check that the Initial height is 3 meters and the Atmosphere is None. Click Play and wait for the Shuttlecock to fall. Select the BAR CHART tab and turn on Show numerical values. A. How long did it take the shuttlecock to fall to the bottom? 0.78 B. What was the acceleration of the shuttlecock during its fall? −9.81 C. What was the velocity of the shuttlecock when it hit the bottom? −7.68 (Note: This is an example of instantaneous velocity.) D. What is the mathematical relationship between these three values? 8. Make a rule: If the acceleration is constant and the starting velocity is zero, what is the relationship between the acceleration of a falling body (a), the time it takes to fall (f), and its instantaneous velocity when it hits the ground (v)?
A. How long did it take the shuttlecock to fall to the bottom? The time it took for the shuttlecock to fall to the bottom is 0.78 seconds.B. What was the acceleration of the shuttlecock during its fall? The acceleration of the shuttlecock during its fall is −9.81 m/s².C. What was the velocity of the shuttlecock when it hit the bottom?
The velocity of the shuttlecock when it hit the bottom is −7.68 m/s. This is an example of instantaneous velocity.D. What is the mathematical relationship between these three values? The mathematical relationship between these three values is described by the formula:v = at + v0 where:v is the final velocity is the acceleration is the time it took for the object to fallv0 is the initial velocity8. Make a rule:
If the acceleration is constant and the starting velocity is zero, what is the relationship between the acceleration of a falling body (a), the time it takes to fall (f), and its instantaneous velocity when it hits the ground (v)?The mathematical relationship between the acceleration of a falling body (a), the time it takes to fall (t), and its instantaneous velocity when it hits the ground (v) when the acceleration is constant and the starting velocity is zero can be expressed by the following formula:v = at where:v is the final velocity is the accelerationt is the time it took for the object to fall.
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in a train yard there are tank cars, boxcars, and flatcars. how many ways can a train be made up consisting of tank cars, boxcars, and flatcars? (in this case, order is not important.)
There are 55 ways to form a train consisting of tank cars, boxcars, and flatcars by using concept of combinations.
If there are t tank cars, b boxcars, and f flatcars in the train yard, then the number of ways to form a train by selecting some of these cars is the same as the number of ways to distribute n = t + b + f identical objects into three distinct boxes, such that each box may receive any number of objects (including zero). The solution is given by the combination formula:
C(n + k - 1, k - 1)
where k is the number of boxes (in this case, k = 3). Therefore, the number of ways to form a train from t tank cars, b boxcars, and f flatcars is:
C(t + b + f + 3 - 1, 3 - 1) = C(t + b + f + 2, 2) = (t + b + f + 2)! / ((t + b + f)! * 2!)
There are 4 tank cars, 3 boxcars, and 2 flatcars in the train yard, then the number of ways to form a train is:
C(4 + 3 + 2 + 2, 2) = C(11, 2) = 55
Therefore, there are 55 ways to form a train consisting of tank cars, boxcars, and flatcars
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problems 15–18 use the method of example 2 to compute eat for the coefficient matrix. use (1) to find the general solution of the given system.problems 15–18 use the method of example 2 to compute eat for the coefficient matrix. use (1) to find the general solution of the given system.
X’=(4 3 -4 -4)X
X’=(4 -2 1 1)X
The eigenvector for λ1 is (x1 x2) = ((√3 - 1)x2 x2), where x2 is a free parameter.
How we find the general solution of the given system?To compute \(e^A^t\) for the given coefficient matrices, we need to diagonalize the matrices and find the eigenvalues and eigenvectors.
Once we have the eigenvalues and eigenvectors, we can compute \(e^A^t\) using the formula \(e^At = P * diag(e^λt) * P^(-1)\), where P is the matrix of eigenvectors and diag(e^λt) is a diagonal matrix with the eigenvalues exponentiated by t.
Let's start with the first system:
X' = (4 3 -4 -4)X
To find the eigenvalues and eigenvectors, we solve the equation (A - λI)X = 0, where A is the coefficient matrix, λ is the eigenvalue, I is the identity matrix, and X is the eigenvector.
For the matrix A = (4 3 -4 -4), we have:
(A - λI)X = 0
(4 3 -4 -4 - λ)(x1 x2) = 0
Expanding the determinant, we get:
(4-λ)(-4-λ) - (3)(-4) = 0
λ^2 - 4λ + 4 - 12 = 0
λ^2 - 4λ - 8 = 0
Solving this quadratic equation, we find the eigenvalues:
λ1 = 2 + 2√3 ≈ 5.464
λ2 = 2 - 2√3 ≈ 0.536
Now, for each eigenvalue, we need to find the corresponding eigenvector by solving (A - λI)X = 0.
For λ1 = 2 + 2√3, we have:
(2 3 -4 -4 - (2 + 2√3))(x1 x2) = 0
(-2 - 2√3 3 -4)(x1 x2) = 0
Solving this system of equations, we find the eigenvector:
x1 = (√3 - 1)x2
Similarly, for λ2 = 2 - 2√3, we find the eigenvector:
x1 = (-√3 - 1)x2
Now that we have the eigenvalues and eigenvectors, we can compute \(e^A^t\) using the formula mentioned earlier. However, since the specific values of A are not provided, I cannot proceed with the computation.
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If you anwser the question i give you brainly
The proportional relationship graph that shows the situation is: Graph C.
What is a Proportional Relationship?A proportional relationship is defined as y = kx, where k is the constant of proportionality between x and y, and k = y/x.
Given the equation, M = 3n,
k = 3.
Thus, the graph that has a constant of proportionality (k) of 3, will correspond to the situation.
In graph C, using a point, (400, 1,200), we have:
k = 1,200/400
k = 3
Therefore, the graph that corresponds to the situation is: C.
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Suppose that x is normally distributed with mean 80 and standard deviation 25. What is the probability that x is greater than 77. 5?
The probability that x is greater than 77. 5 is 0.039828
Given,
Mean, μ = 80
Standard deviation, σ = 25
We have to find z score corresponding to 77.5
z = (x-μ) / σ
\(=\frac{77.5-80}{25} \\= 0.1\)
Now we have to find P value from Z table:
P(x<77.5) = 0.46017
P(x>77.5) = 1 - P(x<77.5) = 0.53983
P(77.5<x<80) = 0.5 - P(x<77.5) = 0.039828
The probability of x greater than 77.5 is 0.039828
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sam is building a model or an egyptian pyramid out of cardboard. he plans to make asquare base with an edge of 16 inches. The height of each triangular face is 9 inches . Determine the total amount of cardboard he will use for all the surfaces in square inches
Answer:
544
Step-by-step explanation:
how do u solve this? ty
The output of the program is 27. The program first defines a string S as "101010100111".
How to explain the programThen, it starts a for loop that iterates from len(S)-1 (which is 10) to 0, in steps of -3. In each iteration of the loop, the following steps are performed:
The variable p is initialized to 1. The variable V is initialized to 0. A nested for loop is used to iterate from 0 to 2
The value of V is added to the value of val(S[x-y]), where val(s[x-y]) is the integer value of the character at position x-y in the string S.
The for loop terminates when x reaches 0. At this point, the value of V will be 27. The program then prints the value of V.
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A video club costs $25 to join. Each video that is rented costs $2.50. Let v represent the
number of videos. Identify the independent and dependent variables. Then, write a rule
in function notation for the situation.
Answer:
Independent: videos rented; Dependent: total cost; f(v) = 2.5v + 25
Step-by-step explanation:
plz mark as brainliest i tryed my best im sure its right
Laura is walking for a local charity She earns 75 cents for every lap she walks How much does she earn for walking 50 laps
Answer:
She earns $ 37.5 by walking 50 laps
Step-by-step explanation:
This method is called unitary method.
If we know the value of 1 unit of an item we can calculate any number of units of item.
For 1 lap she earns 75 cents.
She walks 50 laps.
She earns for 50 laps = 50*75= 3750 cents
Now we have to converts cents into Dollars for convenience.
1$ = 100 cents
3750 /100 = $ 37.5
h(x)=3x^3+2x^2+5
Would the function h(x) be even, odd, or neither?
Answer:it would be even i think
Step-by-step explanation:
please give me brainliest if im right
In 500 words:
Explain the different ways the Polynesians used to navigate the Polynesian Triangle.. Can an added interpretation dilute or misrepresent the Indigenous knowledge portrayed, why or why not?
This is for history of astronomy class.
The Polynesian Triangle is a vast region of the Pacific Ocean that encompasses Hawaii, New Zealand, and Easter Island. The Polynesians were skilled navigators who traveled across this vast expanse of water using only the stars, winds, and currents to guide them. They developed a sophisticated system of navigation that allowed them to travel thousands of miles across the open ocean with remarkable accuracy.
One of the primary methods used by the Polynesians to navigate the Polynesian Triangle was celestial navigation. They used the stars, moon, and planets to determine their position and direction. They had an intimate knowledge of the night sky and could identify hundreds of stars and constellations. They used these celestial bodies to create mental maps of the sky that they could use to navigate by. They also used the position of the sun during the day to determine their direction.
Another method used by the Polynesians was wayfinding. Wayfinding is a complex system of navigation that involves observing the natural environment, such as waves, clouds, and birds, to determine one's position and direction. The Polynesians had an intimate knowledge of the ocean currents and wind patterns in their region. They could read the waves and clouds to determine their direction and could even detect land from great distances by observing the behavior of birds.
The Polynesians also used navigational instruments such as the kamalae and the kapele. The kamalae was a wooden board with a small hole in it that was used to measure the angle between two stars. The kapele was a cord with knots tied in it that was used to measure distance traveled.
It is important to note that Indigenous knowledge is often passed down through oral traditions and cultural practices. When interpreting this knowledge, it is essential to do so with respect for its origins and context. Adding interpretations or misrepresenting Indigenous knowledge can dilute its meaning and significance.
In conclusion, the Polynesians used a variety of methods to navigate the Polynesian Triangle, including celestial navigation, wayfinding, and navigational instruments. Their knowledge of the natural environment and their ability to read the stars and currents allowed them to travel vast distances across the open ocean with remarkable accuracy. When interpreting Indigenous knowledge, it is essential to do so with respect for its origins and context.
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which answer is it ?
Answer:
168 cubic in.
Step-by-step explanation:
Volume of a rectangular pyramid: (l × w × h) / 3 or × 1/3.
Volume: (7 × 8 × 9) / 3
(504) /3
V = 168 cubic in.
find+the+standard+deviation+for+a+security+that+has+three+oneyear+returns+of+5%,+10%,+and+15%.+question+content+area+bottom+part+1+a.+25.00%+b.+8.33%+c.+16.67%+d.+5.00%
Answer:
Step-by-step explanation:
its 100%
a professor at a university ranks subjects based on students' preferences identified through a survey. he ranks science first, mathematics second, and management third. what type of measurement scale has the professor employed?
The type of measurement scale which the professor employed is an ordinal scale.
We can rate people or things using an ordinal scale without explaining the meaning of the distinctions between the ranks. The second level of measurement, known as the ordinal scale, conveys data ranking and ordering without assessing the degree of variation between them.
The data in the given case is the names of the subjects namely science, mathematics, and management, which is definitely qualitative data. Next, it must be determined whether the data is at the nominal level or the ordinal level. Data at the nominal level cannot be ordered, however, data at the ordinal level can be. The professor is developing a relationship between the subjects by placing them in order since he is able to rank them according to the preferences of the pupils. Thus, he is using an ordinal scale.
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AB is a chord of the radius 5cm. The major arc AYB subtends an angle of 240degree at the center. Find the length of the chord AB
Refer to the attachment! v
simplify the expression. -2(-9 + 2z)
Answer:
18 - 4z
Step-by-step explanation:
Multiply
-2 * (-9) = 18
-2 * 2z = -4z
18 - 4z
what value of z divides the standard normal distribution so that half the area is on one side and half is on the other? round your answer to two decimal places. if you would like to look up the value in a table, select the table you want to view, then either click the cell at the intersection of the row and column or use the arrow keys to find the appropriate cell in the table and select it using the space key. note: selecting a cell will return the value associated with the column and row headers for that cell.
The value of z that divides the standard normal distribution so that half the area is on one side and half is on the other is 0.00.
To understand this better, let's visualize the standard normal distribution. The graph of the standard normal distribution is a bell-shaped curve that is symmetrical around the mean of 0.
When we say that half the area is on one side and half is on the other, we mean that the area under the curve to the left of the z-score is equal to the area under the curve to the right of the z-score.
Since the standard normal distribution is symmetric, this occurs when the z-score is equal to 0.00. At this point, the area to the left of 0.00 is 0.50 (or 50%), and the area to the right of 0.00 is also 0.50 (or 50%).
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In each case, arrange the given integers in descending order:
a. -5,-3, 8, 15, 0, -2
b. 12, 23, -11,0,7,6
c. -1, -21, -31, 12,5, 11
d. 56,-35, 98,-53, 4,0
3. Write the following in increasing order:
a. 21,-8,-26,85,33,-333,-210,0,2011
b. -8,0,-5,5,4,-1
c. 3,-3,4,-7,0,-6,2
d. -1, -7,8,-3,0,3,17
e. 5,19,-10, -7,6,-6
The total length of these planks is 92 metres. Work out the number of planks of length 2 metres in Ben workshop.
Answer: 13
Step-by-step explanation:
5 (-x-1)=x+21 - 6xn what is the solution to the following equation
Please help me on my assignment I have to do it before taking the test
Answer:
26
Step-by-step explanation:
w = 5 so 7w is 7 x 5 = 35 and x = 9 so it’s 35 - 9 which is 26
A dr administers a drug to a 34-kg pt, using a dosage formula of 48mg/kg/day. Assume that the drug is available in 300 mg tablets. Pt should take how many pills every four hours?
To determine how many pills the patient should take every four hours, we need to calculate the dosage based on the patient's weight and the prescribed dosage formula.
Given:
Patient weight = 34 kg
Dosage formula = 48 mg/kg/day
First, let's calculate the total dosage the patient needs per day:
Total dosage = Dosage per kg * Patient weight
Total dosage = 48 mg/kg/day * 34 kg
Total dosage = 1,632 mg/day
Since the patient needs to take the medication every four hours, we need to determine the number of pills for each dose.
Let's calculate the number of pills for each four-hour dose:
Dosage per four hours = Total dosage per day / Number of four-hour intervals in a day
Dosage per four hours = 1,632 mg/day / (24 hours / 4 hours)
Dosage per four hours = 1,632 mg/day / 6
Dosage per four hours ≈ 272 mg
Since the drug is available in 300 mg tablets, we can calculate the number of tablets for each four-hour dose:
Number of tablets = Dosage per four hours / Tablet strength
Number of tablets = 272 mg / 300 mg
Number of tablets ≈ 0.91
Rounding up to the nearest whole number, the patient should take 1 tablet every four hours.
Therefore, the patient should take 1 pill every four hours.
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What is the cube of 6?
A. 216
B. 42
C. 36
D. 18
Answer:
A
Step-by-step explanation:
Cubes are numbers that are multiplied by itself three times so 6 times 6 times 6 is 216
Find the area under the standard normal curve between z=â1.16 and z=â0.03 Round your answer to four decimal places, if necessary.
The area under the standard normal curve between z=â1.16 and z=â0.03 is 0.3663.
To find the area under the standard normal curve between z = -1.16 and z = -0.03, we will use the following steps:
1. Look up the z-values in the standard normal distribution table (or use a calculator or online tool that provides the corresponding probability values).
2. Subtract the probability value for z = -1.16 from the probability value for z = -0.03.
3. Round your answer to four decimal places.
Step 1: Look up the z-values in the standard normal distribution table.
- For z = -1.16, the corresponding probability value is 0.1230.
- For z = -0.03, the corresponding probability value is 0.4893.
Step 2: Subtract the probability values.
Area = P(-0.03) - P(-1.16) = 0.4893 - 0.1230
Step 3: Round the answer to four decimal places.
Area = 0.3663
So, the area under the standard normal curve between z = -1.16 and z = -0.03 is approximately 0.3663.
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