Step-by-step explanation:
as you know, there are 12 months per year.
also, the word "annual" means "per year" (of again 12 months).
each worker gets 7,576 per month.
that means each worker gets an annual salary of
7,576 × 12 = 90,912
the salaries/wages of all 53 workers together in a year are then
90,912 × 53 = 4,818,336
Suppose that the scores on a reading ability test are normally distributed with a mean of 65 and a standard deviation of 8. a) If one student is chosen at random, what is the probability that the students score is less than 81 points on this test? b) If 500 students took reading ability test how many would expect to earn score less than 81 points? c) Find the probability of randomly selecting 35 students (all from the same class) that have a sample mean reading ability test score between 66 and 68.
The probability that a student's score is less than 81 points on the reading ability test is 0.9772. We would expect approximately 489 students to earn a score less than 81 points if 500 students took the reading ability test. The probability of randomly selecting 35 students (all from the same class) that have a sample mean reading ability test score between 66 and 68 is approximately 0.2190.
To find the probability that a student's score is less than 81 points, we need to standardize the score using the z-score formula:
z = (x - μ) / σ
where x is the student's score, μ is the mean score, and σ is the standard deviation. Plugging in the values, we get:
z = (81 - 65) / 8 = 2.00
Using a standard normal distribution table or calculator, we can find the probability of a z-score less than 2.00 to be approximately 0.9772. Therefore, the probability that a student's score is less than 81 points is 0.9772.
Since the distribution is normal, we can use the normal distribution to estimate the number of students who would earn a score less than 81. We can standardize the score of 81 using the z-score formula as above and use the standardized score to find the area under the normal distribution curve. Specifically, the area under the curve to the left of the standardized score represents the proportion of students who scored less than 81. We can then multiply this proportion by the total number of students (500) to estimate the number of students who would score less than 81.
z = (81 - 65) / 8 = 2.00
P(z < 2.00) = 0.9772
Number of students with score < 81 = 0.9772 x 500 = 489
Therefore, we would expect approximately 489 students to earn a score less than 81 points.
The distribution of the sample mean reading ability test scores is also normal with mean μ = 65 and standard deviation σ / sqrt(n) = 8 / sqrt(35) ≈ 1.35, where n is the sample size (number of students in the sample). To find the probability that the sample mean score is between 66 and 68, we can standardize using the z-score formula:
z1 = (66 - 65) / (8 / sqrt(35)) ≈ 0.70
z2 = (68 - 65) / (8 / sqrt(35)) ≈ 2.08
Using a standard normal distribution table or calculator, we can find the probability that a z-score is between 0.70 and 2.08 to be approximately 0.2190. Therefore, the probability of randomly selecting 35 students (all from the same class) that have a sample mean reading ability test score between 66 and 68 is approximately 0.2190.
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1.2 career planning financial algebra
Needs more info about your question please
How i can write that numbers in letters/ como los escriboo en letras
693,5699=
34,02289=
0,789=
5691,78=
PLEASE HELP ME I WILL MARK BRAINLIEST (ITS DUE IN A HOUR)
its b/13=5 and then to solve you multiply both sides by 13 to get b=65
so 65 bean bags
show that among any group of five (not necessarily consecutive) integers, there are two with the same remainder when divided by 4. (Hinpigeonhole principle)
Two of them have the same remaining. The proof using the pigeonhole principle is now complete.
When an integer is divided by 4, there are four potential remainders: 0, 1, 2, or 3. Take any set of five numbers as an example.
If at least three of them have the same remainder when divided by 4, then we are done, since two of them will have the same remainder. This is because if three integers have the same remainder, then we can subtract that remainder from all of them, and the resulting three integers will all be divisible by 4, which means that two of them will have the same remainder when divided by 4.
So suppose that at most two of the integers have the same remainder when divided by 4. Then there are at most two integers with remainder 0, at most two integers with remainder 1, at most two integers with remainder 2, and at most two integers with remainder 3. This means that there are at most 8 integers in total, which is a contradiction since we started with 5 integers. Therefore, there must be at least three integers with the same remainder when divided by 4, and hence there are two with the same remainder. This completes the proof by the pigeonhole principle.
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determine the probability that all the molecules of a gas will be found in one half of a container when the gas consists of 1 molecule.
The probability that all the molecules of a gas consisting of 1 molecule will be found in one half of a container is 1 or 100%.
If a gas consists of only one molecule, then it will always be found in one half of the container. This is because there is no other molecule to interact with and no other half of the container to occupy. Therefore, the probability that all the molecules of a gas consisting of 1 molecule will be found in one half of a container is 1 or 100%.
However, this is not the case for gases consisting of more than one molecule. In fact, the probability of all the molecules being found in one half of a container is extremely low and depends on the number of molecules, the volume of the container, and the temperature and pressure of the gas.
This phenomenon is related to the concept of entropy and the tendency of systems to move towards a state of higher disorder. As the number of molecules in a gas increases, the probability of all the molecules being found in one half of a container decreases exponentially.
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Amanda is saving money to buy a game. The game costs $24 , and so far she has saved three-fourths of this cost. How much money has Amanda saved?
Answer:
18
Step-by-step explanation:
Which expression is equivalent to 3x - (2x + 4) + 5?
x+1
x + 9
5x + 9
5x + 1
Answer:
x + 1
Step-by-step explanation:
3x - (2x + 4) + 5
3x - 2x - 4 + 5
x - 4 + 5
x + 1
Calculate:
a) QR
b) PS
c) The area of quadrilateral PQRS
Greetings from Brasil...
For QR: we need to use the Sine Law in Any Triangle....
QS/SEN 72 = QR/SEN 25
6/SEN 72 = QR/SEN 25
6,3 = QR/SEN 25
QR = 2,66For PS: we need to use the Cosine Law in Any Triangle....
PS² = PQ² + QS² - 2.PQ.QS.COS Q
PS² = 7,4² + 6² - 2.(7,4).6.COS 34
PS² = 90,76 - 73,61
PS = √17,14
PS = 4,14For area we use Heron's Formula 2x.....
for ΔQRS = A1:
A1 = √[P.(P - QR).(P - RS).(P - QS)]
where P = (QR + RS + QS)/2
A1 = √[P.(P - QR).(P - RS).(P - QS)]
RS = 6,26 (using RS/SEN 97 = QS/SEN 72)
P = (2,66 + 6,26 + 6)/2
P = 14,92/2 ⇒ P = 7,46
A1 = √[7,46.(7,46 - 2,66).(7,46 - 6,26).(7,46 - 6)]
A1 = 7,92
for ΔPQS = A2:
A2 = √[P.(P - PQ).(P - PS).(P - QS)]
P = (7,4 + 4,14 + 6)/2 = 8,77
A2 = √[8,77.(8,77 - 7,4).(8,77 - 4,14).(8,77 - 6)]
A2 = 12,41
Total Area = A1 + A2
Total Area = 7,92 + 12,41
Total Area = 20,33see more:
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my teacher didn't explain well so I need help
Which describes the range of the parent absolute value function?
Answer:
C
Step-by-step explanation:
Just did the Unit Review
Ashley sells beaded necklaces. Each large necklace sells for $5.70 and each small necklace sells for $4.50. How much will she earn from selling 3 large necklaces and 1 small necklace?
Which is equivalent to - (2x - 5y ) ?
based on the options given, it looks like -2x+5y would be correct although i am not certain
Which expression has the same value as -18\(-9)?
-18\2
-12\(-3)
-10\5
-8\(-4)
Answer:
Step-by-step explanation:
Well -8/-4 is 2 so that is the same
Siobhan performs the elementary row operation represented by 2R3-R2 on matrix A.
Answer:
The matrix would be:
-1 2
12 2
6 3
-3 -4
Step-by-step explanation:
Took the quiz.
The matrix representation that results from the transformation will be:
\(\left[\begin{array}{ccc}-1&2\\0&4\\12&2\\-3&-4\end{array}\right]\)
Given the elementary matrix
\(\left[\begin{array}{ccc}-1&2\\0&4\\6&3\\-3&-4\end{array}\right]\)
The question required us to transform the matrix by using the elementary row operator 2R₃-R₂
Applying the transformation will create a new Row 3 as shown below:
New Row 3 Column 1 <-> 2(6) - 0 = 12New Row 3 Column 2 <-> 2(3) - 4 = 6 - 4 = 2The equivalent matrix will be:
\(\left[\begin{array}{ccc}-1&2\\0&4\\12&2\\-3&-4\end{array}\right]\)
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Natalie invests $5,632 in a retirement account with a fixed annual interest rate of 2% compounded 12 times per year. What will the account balance be after 16 years?
A) $8,398.46
C) $7,753.92
B) $8,610.85
D) $7,910.43
Answer:
C) $7,753.92
Step-by-step explanation:
Given data
Principal= $5,632
Rate=2%
n= 12
Time = 16 years
The expression for compound interest is
A=P(1+r/n)^nt
substitute
A= 5632(1+0.02/12)^12*16
A=5632(1+0.02/12)^12*16
A= 5632(1+0.00166)^12*16
A= 5632(1.00166)^12*16
A= 5632(1.00166)^192
A=5632*1.375
A=$7744
Hence the approximate amount is C) $7,753.92
P is any point inside triangle ABC. Prove that PA + PB + PC > (AB+BC+CA)/(2)
If P is any point inside triangle ABC, then
PA + PB + PC > (AB + BC + CA)/2
It is given that P is any point inside the triangle ABC. So after taking a point P inside the triangle ABC, we will join P with the vertices of the triangle which are A, B, and C. So, now we have formed three sides which are PA, PB, and PC as shown in the figure.
Now, we can see that we have three more triangles formed inside the triangle ABC. These triangles are PAB, PAC, and PBC. As we know the sum of the two sides of a triangle is always greater than the third side. We will apply this property in these three triangles.
In △PBA, AB < PA+PB (1)
In △PBC, BC < PB+PC (2)
In △PCA, AC < PC+PA (3)
Adding (1), (2), and (3), we get
AB + BC + AC < PA + PB + PB + PC + PC + PA
AB + BC + AC < 2PA + 2PB + 2PC
AB + BC + AC < 2(PA + PB + PC)
(PA + PB + PC) > (AB + BC + AC)/2
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Find the difference between points M(6, 16) and Z(-1, 14) to the nearest tenth.
The distance between points M(6, 16) and Z(-1, 14) is approximately 7.1 units.
We can use the distance formula to find the distance between two points in a coordinate plane. The distance formula is:
d = √((x2 - x1)² + (y2 - y1)²)
where (x1, y1) and (x2, y2) are the coordinates of the two points. Substituting the coordinates of M(6, 16) and Z(-1, 14), we get:
d = √((-1 - 6)² + (14 - 16)²) = √(49 + 4) = √53 ≈ 7.1
Therefore, the distance between points M(6, 16) and Z(-1, 14) is approximately 7.1 units.
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A ray, line or segment that cuts a segment in half and create right angles is called__
Find the volume of radius 7 cm in diameter of 12 cm in 3.14
The volume of a sphere with a radius of 7 cm (or diameter of 12 cm) is 904.32 cubic centimeters.
To find the volume of a sphere with a radius of 7 cm, we can use the formula:
V = (4/3) * π * r^3
where V represents the volume and r represents the radius. However, you mentioned that the diameter of the sphere is 12 cm, so we need to adjust the radius accordingly.
The diameter of a sphere is twice the radius, so the radius of this sphere is 12 cm / 2 = 6 cm. Now we can calculate the volume using the formula:
V = (4/3) * π * (6 cm)^3
V = (4/3) * 3.14 * (6 cm)^3
V = (4/3) * 3.14 * 216 cm^3
V = 904.32 cm^3
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a manager recorded the number of gallons of ice cream sold for the past six periods. he asked you to choose a forecasting model to predict the demand for gallons of ice cream in period 7. you consider applying a two-period moving average model and a two-period weighted moving average model with weights of 0.6 and 0.4. a) which model is better for this data set (hint: show all your work including forecasts for each period and calculations using measures of forecast accuracy)? (9 points)
The two-period moving average model and the two-period weighted moving average model are both common forecasting methods used to predict future demand. and we understand that the model with the lower MAD and MSE values will have the most accurate forecast.
To determine which model is better for this particular data set, we need to compare the accuracy of each model. To do this, we will calculate the Mean Absolute Deviation (MAD) and the Mean Squared Error (MSE) for each model.
For the two-period moving average model, we can calculate the forecast for period 7 by taking the average of p5 and 6:
Period 7 forecast = (Gallons in Period 5 + Gallons in Period 6)/2
For the two-period weighted moving average model, we can calculate the forecast for period 7 by using the weights of 0.6 and 0.4:
Period 7 forecast = (0.6 x Gallons in Period 5) + (0.4 x Gallons in Period 6)
We can then compare the accuracy of each model by calculating the MAD and MSE. To calculate MAD, we need to subtract the actual demand in each period from the forecasted demand and take the absolute value:
MAD = |Actual demand – Forecasted demand|
To calculate MSE, we need to square the differences between the actual demand and the forecasted demand:
MSE = (Actual demand – Forecasted demand)^2
After calculating the MAD and MSE for each model, we can compare the results to determine which model is better for this data set. The model with the lower MAD and MSE values will have the most accurate forecast.
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The time in seconds, t, it takes for a specific object being dropped from a particular height in feet above sea level, h, to reach the ground can be found by the radical function t equals one fourth times radical h period At what height should you drop an object in order for it to reach the ground in 16 seconds?
Answer:
B.) 4,096 feet
Step-by-step explanation:
You were given a time, and time in the equation is represented by "t". To find the height, represented by "h", you just need to plug the given value in for "t" and simplify to find "h".
t = (1/4)√x <--- Original equation
16 = (1/4)√x <--- Plug 16 in "t"
64 = √x <--- Divide both sides by (1/4)
4,096 ft = x <--- Square both sides
The object reach the ground in 16 seconds, you should drop it from a height of 4096 feet.
The equation is t=1/4 √x , where t is time in seconds and x is height in feet. To determine the height x at which an object should be dropped to reach the ground in 16 seconds, you can plug in the value of t=16 into the equation:
16 = 1/4 √x
Simplify the equation by multiplying both sides by 4:
4⋅16= √x
64= √x
Now, square both sides to isolate x:
64²=x
4096 = x
Therefore, to have the object reach the ground in 16 seconds, you should drop it from a height of 4096 feet.
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plz help and plz with an explination
don't make fun of me bc I just put random answers
Answer:
from Ron to Bill from Bill to John the ball traveled about 80 yd
Step-by-step explanation:
Ron 30 yd from John
Bill 40 yd away from John
Bill 10 yd away from John
can you help me with this
Answer:57ft
Step-by-step explanation:
104 divided by 2+ 5=57ft
yeah Sure I Have Captured your solution In Image. hope you understand it
Determine the number of significant figures in each measurement. Then, choose the representation of the number where x is in place of the estimated digit from the measurement.
a) 14.8m
b) $10.25
c) 0.05 L
d) 1.000 g/mL
e) 6200cm
f) 403 kg
The number of significant figures and the estimated digits are
a) 3 significant figures: 14.8mb) 4 significant figures: $10.25c) 1 significant figures: 0.05 Ld) 4 significant figures: 1.000 g/mLe) 4 significant figures: 6200 cmf) 3 significant figures: 403 kgHow to determine the significant figures and the estimated digitsThe number of significant figures is the number of non-zero digit in each number
With the exception of 0.05 in the list of numbers, the significant digits are the count of digit in each measurement
For 0.05, the significant digits is 1
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10x+7=87 record steps
Write an equation of the line passing through point P(4,3) that is parallel to the line y = 12(x+4).
Answer:
y=12x-45
Step-by-step explanation:
First we want to get y=12(x+4) into Slope intercept form which is y=mx+b and we do that by multiplying 12 by x so we get 12x and multiplying 12 by 4 so we get 48.
Now we have:
y=12x+48
where the slope is 12.
Parallel lines have the same slope. so the line that goes through (4,3) will have the same slope.
Now that we have a slope and a point we want to write an equation in point-slope form: y-y1=m(x-x1)
Step 1 for this: y-3=12(x-4)
Step 2: we will distribute and solve for y so our answer is in slope intercept form.
Step 3: we now have the equation y-3=12x-48 after distributing now we add 3 to -3 so it cancels out and we add 3 to -48 and we get -45
Our answer is y=12x-45
Hope this helps!
Solve the absolute value equation. Graph the solution. |x-3|=1
Answer:
4
Step-by-step explanation:
hihihihihihihihihihi
can someone help me please
Answer:
3: 55 degrees
4: 128 degrees
Step-by-step explanation:
A straight line is 180 degrees and so you do 180-125 to get 55 degrees
180-58 is 128 degrees
x y 3 12 5 20 6 24 8 32 The table shows a proportional relationship between x and y. What is the unit rate of y per x? A) 1 B) 2 C) 3 D) 4
Answer:
D.6
Step-by-step explanation:
Answer:d)4
Step-by-step explanation: