▪ Answer:
+ 16
▪ Step-by-step explanation:
Hi there !
(-2)^4 =
= (-2)(-2)(-2)(-2)
= (4)(-2)(-2)
= (-8)(-2)
= + 16
Good luck !
(-)(-) = +
(-)(+) = -
How many units is 523 from 0?
Using proportions, it is found that the number 523 is 523 units from zero.
What is a proportion?A proportion is a fraction of a total amount, and equations can be built to find the desired measures in the context of the problem using arithmetic operations such as multiplication and division with the unit rates of the measures.
One example of application is for the digit values of a number, as:
Each unit is worth 1.Each tenth is worth 10.Each hundredth is worth 100.Each thousandth is worth 1000.And so on...
For the number 523 given in this problem, since each unit is worth one, the number of units that it is away from zero is given by:
523/1 = 523 units.
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Of the three Ms, the ______ is especially useful when extreme figures may warp the average. a) mode b) margin c) mean d) median. d) median.
Of the three Ms, the median is especially useful when extreme figures may warp the average. It is because the median is the middle value in a set of data, and it is not affected by extreme values as the mean is.
The three Ms refer to the measures of central tendency: mean, median, and mode. These measures help summarize and describe a dataset.
In situations where extreme figures may distort the average, the median is particularly useful. The median is the middle value in a dataset when the data is arranged in ascending or descending order.
It is not affected by extreme values, also known as outliers, as it only considers the position of the middle value.
Unlike the mean, which takes into account all values and can be influenced by extreme figures, the median provides a more robust measure of central tendency.
It is resistant to the influence of outliers and extreme values, making it a suitable choice when extreme figures may warp the average.
Therefore, it provides a more accurate representation of the data.
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help i feel not smart that i dunno how to do this
Find the probability of getting both heads when a coin is thrown twice
Answer:
hi :]
Step-by-step explanation:
Please help this is not correct !
Answer:
(2,-1) and 5
Step-by-step explanation:
Like segment AB is divided by point C in the ratio of 1:3
Answer:
A
Step-by-step explanation:
Find the linearization of the function z = x squareroot y at the point (6, 1). L(x, y) = Find the linearization of the function f(x, y) = squareroot 36 - 4x^2 - 4y^2 at the point (-1, 2). L(x, y) = Use the linear approximation to estimate the value of f(-1.1, 2.1) =
Answer:
Step-by-step explanation:
Find the linearization of the function z = x squareroot y at the point (6, 1). L(x, y) = Find the linearization of the function f(x, y) = squareroot 36 - 4x^2 - 4y^2 at the point (-1, 2). L(x, y) = Use the linear approximation to estimate the value of f(-1.1, 2.1) =
simplify the expression 27^2/3 divided by 27^4/3
The simplified form of (27^(2/3)) / (27^(4/3)) is 1/9.
To simplify the expression (27^(2/3)) / (27^(4/3)), we can use the properties of exponents.
First, let's rewrite both terms with the same base, which is 27. Recall that when dividing two terms with the same base, we subtract the exponents:
27^((2/3) - (4/3))
Next, we can simplify the exponent by subtracting the fractions:
27^(-2/3)
To further simplify this expression, we can apply the property of negative exponents, which states that a^(-n) is equal to 1 / a^n:
1 / (27^(2/3))
Now, let's rewrite the exponent as a cube root:
1 / (cuberoot(27^2))
Since 27 is equal to 3^3, we can simplify further:
1 / (cuberoot((3^3)^2))
1 / (cuberoot(3^6))
Taking the cube root of 3^6:
1 / 3^2
Simplifying further:
1 / 9
Therefore, the simplified form of (27^(2/3)) / (27^(4/3)) is 1/9.
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Label the following on the coordinate plane below: quadrant I, II, III, and IV; the origin, the x‐axis, and
the y‐axis. Also, label the sign of the coordinate points found in each quadrant.
Answer:
Quadrant I is located on the top right of the graph (Positive x, Positive y)
Quadrant II is located on the top left of the graph (Negative x , Positive y)
Quadrant III is located on the bottom left of the graph (Negative x, Negative y)
Quadrant IIII is located on the bottom right of the graph (Positive x, Negative y)
The origin is at the center of the graph with (0,0) as its x and y components
Step-by-step explanation: ^^ Please give 5 star and thanks.
You would like to study all of the numbers that are at a distance 10 or less from a number -20. Write this using absolute value notation and use the variable x
Answer:
Step-by-step explanation:
dad hates me sorry bye
Checking for approximate normality in the population is essential for constructing a valid confidence interval, particularly when dealing with small sample sizes. This ensures the accuracy and reliability of the interval in estimating the true population parameter.
It's important to check whether the population is approximately normal before constructing a confidence interval because the accuracy and validity of the interval depend on the underlying distribution of the population. Here's a step-by-step explanation:
1. A confidence interval is a range of values within which the true population parameter (e.g., mean or proportion) is likely to fall, with a certain level of confidence (e.g., 95% or 99%).
2. The process of constructing a confidence interval relies on the Central Limit Theorem, which states that, for large sample sizes, the sampling distribution of the sample mean will be approximately normal, regardless of the population distribution.
3. However, for small sample sizes, the distribution of the population needs to be approximately normal in order to obtain an accurate confidence interval. This is because the normality assumption is crucial for the proper interpretation of the interval.
4. If the population is not approximately normal, the confidence interval may not provide a reliable estimate of the true population parameter, leading to incorrect conclusions and potentially invalid results.
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let a be a 8x5 matrix. suppose the homogeneous system ax = 0 has infinitely many solutions.
We have a homogeneous system represented by Ax = 0, where A is an 8x5 matrix.
Since this system has infinitely many solutions, it indicates that the system is underdetermined, meaning there are more equations than unknowns. In other words, the rank of matrix A is less than the number of columns (5).
To further explain, a homogeneous system Ax = 0 will always have at least one solution, the trivial solution (x = 0). However, if the system has infinitely many solutions, it means there are free variables, and these free variables lead to a nontrivial solution (x ≠ 0).
In summary, the given 8x5 matrix A in the homogeneous system Ax = 0 has a rank less than 5, resulting in infinitely many solutions due to the existence of free variables.
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#1 Solve the systems of equation "manually" using Gauss Elimination Jacobi Method with 10 iterations and Gauss-Seidel Method with 10 iterations Make sure to tabulate your results 10x1+2x2−x3=27 =27,,−3x1−6x2+2x3 =−61. 5,x1 +x2+5x3=27=−21. 5
After Gauss Elimination Jacobi Method with 10 iterations we get, x1 ≈ 1.944, x2 ≈ -4.768 and x3 ≈ -4.167. After Gauss-Seidel Method with 10 iterations we get, x1 ≈ 1.928, x2 ≈ -4.806 and x3 ≈ -4.120.
To solve the given system of equations manually using the Gauss Elimination Jacobi Method and Gauss-Seidel Method, we need to perform several iterations. Let's tabulate the results for both methods after 10 iterations.
Using the Gauss Elimination Jacobi Method:
We start by rearranging the equations to isolate the variables on one side:
Equation 1: 10x1 + 2x2 - x3 = 27
Equation 2: -3x1 - 6x2 + 2x3 = -61
Equation 3: 5x1 + x2 + 5x3 = -21.5
Next, we assume initial values for x1, x2, and x3 (typically 0), and then substitute them into each equation to solve for the new values of x1, x2, and x3. We repeat this process for 10 iterations.
After 10 iterations:
x1 ≈ 1.944
x2 ≈ -4.768
x3 ≈ -4.167
Using the Gauss-Seidel Method:
The Gauss-Seidel Method improves on the Jacobi Method by using the updated values of the variables as soon as they become available.
After 10 iterations:
x1 ≈ 1.928
x2 ≈ -4.806
x3 ≈ -4.120
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A bathroom in a dwelling unit has a counter space of seven feet including the sink. How many receptacles are required to serve this area
To determine the number of receptacles required for the bathroom counter space, we need to refer to the electrical code guidelines. The specific requirements may vary depending on the country or region, as well as the local electrical codes in place.
In the United States, according to the National Electrical Code (NEC), at least one 20-ampere-rated branch circuit is required to serve the bathroom receptacles. The code specifies that this circuit should be dedicated solely to the bathroom receptacles and should not serve any other areas.
The NEC also states that at least one receptacle outlet is required on the bathroom countertop. This receptacle should be located within 3 feet of the outer edge of the countertop and should be installed above the countertop surface. This means that a receptacle needs to be placed within reach of the bathroom counter space.
Considering the given information that the bathroom counter space is seven feet, including the sink, we need to install at least one receptacle outlet on the countertop within 3 feet of the outer edge. Depending on the specific layout and size of the counter space, additional receptacles may be required to meet the code's requirements for accessibility and convenience.
To ensure compliance with local electrical codes and safety standards, it is advisable to consult with a licensed electrician or refer to the specific electrical codes applicable in your area. They will be able to provide accurate guidance based on the local requirements and regulations.
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hey There! i need ur help Please!!!!
Answer:
35 5x7=35
Step-by-step explanation:)
35 \(hope you love it\)
What i 464 divided by 60 with a remainder?
(trying to figure out how many hour i 464 minute)
When we divide the 464 by 60 we get the following remainder in our answer that is 44.
What do math remainders mean?The Remainder is the name for the value that is left behind after division. If an amount (reward) cannot be divided completely with another number, we are left with only a meaning (divisor). The remaining is the name for this amount. For instance, 10 is not precisely divisible by 3. We can calculate 3 x 3 = 9 because that is the closest value.
Briefing :7.733333333333333
=7 44/60 ⇔ 7 R 44
464 divided by 60
=7 with a remainder of 44
Here, we provide you the outcome of the dividing with remainder, often known as the Euclidean division, along with a brief explanation of the following terms:
464 divide by 60 yields a quotient and residual of 7 R 44.
464 is the dividend & 60 is the divisor; the division (numeric division) of 464/60 is 7; the remainder ("left over") is 44.
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while traveling across flat land, you notice a mountain directly in front of you. its angle of elevation (to the peak) is 2.5°. after you drive 15 miles closer to the mountain, the angle of elevation is 7°. approximate the height of the mountain. (round your answer to three decimal places.
The height of the mountain is 1.011 miles when the angle of elevation changes from 2.5° to 7° after driving 15 miles closer to the mountain.
Approximate the height of the mountain, we can use the concept of trigonometry and set up a proportion.
Denote the height of the mountain as h (in miles). The initial distance from the observer to the mountain is d (in miles), and after driving closer, the new distance is d - 15 (in miles).
Using the tangent function, we can set up the following proportion:
tan(2.5°) = h / d (1)
tan(7°) = h / (d - 15) (2)
The value of h, we can solve equations (1) and (2) simultaneously.
Using a scientific calculator or trigonometric tables, we find that:
tan(2.5°) ≈ 0.0436
tan(7°) ≈ 0.1228
Substituting these values into equations (1) and (2), we get:
0.0436 = h / d (1)
0.1228 = h / (d - 15) (2)
Now we can solve this system of equations to find the value of h.
From equation (1), we have h = 0.0436d.
Substituting this expression for h into equation (2), we get:
0.1228 = (0.0436d) / (d - 15)
To solve for d, we can cross-multiply:
0.1228(d - 15) = 0.0436d
0.1228d - 1.842 = 0.0436d
0.1228d - 0.0436d = 1.842
0.0792d = 1.842
d = 1.842 / 0.0792
d ≈ 23.248
Substituting this value of d back into equation (1), we can find h:
h = 0.0436 * 23.248
h ≈ 1.011
Therefore, the approximate height of the mountain is 1.011 miles (rounded to three decimal places).
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The numbers of carrot muffins and walnut muffins sold at a cafeteria yesterday are
represented below.
Answer:
36%
Step-by-step explanation:
9÷25
Answer:
36%
Step-by-step explanation:
Good luck kiddos :)
I honestly don’t understand can some please help?
Answer:
400$
Step-by-step explanation:
since he receives 20 percent of the sales and he receives 80 dollars. Then 80 dollars is 20 percent of the sales. Now, we can change 20 percent into a fraction, 20 percent is 20/100 or 2/10, now there are 5 twos in a ten so we multiply 2/10 by 5, since 2/10 right now is 80 dollars you multiply 80 by 5
80*5=400, so the sales of the week was 400 dollars
Hope this helps :)
Answer:
Thus, the sales of the week were $400
Step-by-step explanation:
Percentages
The salesman receives a 20% commission on all his sales.
One week the company pays $80 as commission.
This means that $80 corresponds to 20% of the sales.
To find the sales, we just divide the commission by the percentage (expressed as a decimal) as follows:
Sales = $80 / (20/100)
Sales = $80 / 0.20
Sales = $400
Thus, the sales of the week were $400
Five years ago, someone used her $40,000 saving to make a down payment for a townhouse in RTP. The house is a three-bedroom townhouse and sold for $200,000 when she bought it. After paying down payment, she financed the house by borrowing a 30-year mortgage. Mortgage interest rate is 4.25%. Right after closing, she rent out the house for $1,800 per month. In addition to mortgage payment and rent revenue, she listed the following information so as to figure out investment return: 1. HOA fee is $75 per month and due at end of each year 2. Property tax and insurance together are 3% of house value 3. She has to pay 10% of rent revenue for an agent who manages her renting regularly 4. Her personal income tax rate is 20%. While rent revenue is taxable, the mortgage interest is tax deductible. She has to make the mortgage amortization table to figure out how much interest she paid each year 5. In last five years, the market value of the house has increased by 4.8% per year 6. If she wants to sell the house today, the total transaction cost will be 5% of selling price Given the above information, please calculate the internal rate of return (IRR) of this investment in house
Can you show the math as far as formulas go?
Given the following information: Five years ago, someone used her $40,000 saving to make a down payment for a townhouse in RTP. The house is a three-bedroom townhouse and sold for $200,000 when she bought it. After paying down payment, she financed the house by borrowing a 30-year mortgage.
Mortgage interest rate is 4.25%. Right after closing, she rent out the house for $1,800 per month. In addition to mortgage payment and rent revenue, she listed the following information so as to figure out investment return: 1. HOA fee is $75 per month and due at end of each year 2. Property tax and insurance together are 3% of house value 3. She has to pay 10% of rent revenue for an agent who manages her renting regularly 4. Her personal income tax rate is 20%. While rent revenue is taxable, the mortgage interest is tax deductible. She has to make the mortgage amortization table to figure out how much interest she paid each year 5. In the last five years, the market value of the house has increased by 4.8% per year 6.
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There is a bag filled with 3 blue and 4 red marbles.
A marble is taken at random from the bag, the colour is noted and then it is replaced.
Another marble is taken at random.
What is the probability of getting 2 that are different in colour?
Answer:
24/49
Step-by-step explanation:
The options to get 2 of different color is picking blue then red or red then blue.
Starting with picking blue then red.
The chance to pull blue first is 3/7. Then since the marble is replaced the chance to pull red next is 4/7.
The chance to get those in that specific order is the product of the two fractions. (3/7) * (4/7) = 12 / 49
The second option of getting red then blue will be the same as above but 4/7 then 3/7 with the same result of 12/49.
To finish, add the two probabilities together 12/49 + 12/49 = 24/49.
2y−3x=4 write this equation is slope intercept form
Answer:
\(y = \frac{3}{2} x + 2\)
Step-by-step explanation:
\(2y - 3x = 4\)
\(y - \frac{3}{2} x = 2\)
\(y = \frac{3}{2} x + 2\)
A = 2^3 x 3 x 5
B = 22 x 3 x 52
(b) Write down the highest common factor (HCF) of A and B.
Answer:
Step-by-step explanation:
B = 22 × 3 × 52?—or is it supposed to be
B = 2² × 3 × 5² ?
A = 2² × 3 × 5
B = 2² × 3 × 5²
GCF = 2² × 3 × 5 = 60
A = 2² × 3 × 5
B = 22 × 3 × 52 = 2³ × 3 × 5 × 11 × 13
GCF = 2² × 3 × 5 = 60
A jet airplane reaches ( )/(h) on a certain flight. What distance does it cover in 10.0min ?
The distance covered by the jet airplane in 10.0 minutes is ( )/(h) * 1/6 hours.
We need to find the distance covered by the jet airplane in 10.0 minutes. To do this, we can use the formula:
Distance = Speed * Time
Given that the airplane reaches ( )/(h) speed, we can substitute the given speed and time into the formula:
Distance = ( )/(h) * 10.0 minutes
Since the unit of speed is ( )/(h) and the unit of time is minutes, we need to make sure the units are consistent. We can convert the time to hours:
10.0 minutes = 10.0/60 hours
Now we can calculate the distance:
Distance = ( )/(h) * 10.0/60 hours
Simplifying the expression, we get:
Distance = ( )/(h) * 1/6 hours
Therefore, the distance covered by the jet airplane in 10.0 minutes is ( )/(h) * 1/6 hours.
The distance covered by the jet airplane in 10.0 minutes is ( )/(h) * 1/6 hours.
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The area of a circle is A = 625. What is the
circumference?
if the observed t value exceeds the critical t value, then the difference between the sample means is most likely ____.
If the observed t-value exceeds the critical t-value, then the difference between the sample means is most likely statistically significant.
In other words, the difference between the sample means is unlikely to have occurred by chance and is likely due to a real difference in the population means. The direction and magnitude of the difference must be further examined using effect size measures and confidence intervals.
Therefore, the most suitable value to be fit in the blank space of the given incomplete statement is, statistically significant.
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Find the midpoint between the pair of points.
(7,-2) and (-4, 2)
(1.5, 0)
(12,0)
(0, 1.5)
137
Answer:
(1.5,0)
Step-by-step explanation:
midpoint coordinate (x+x1/2 , y+y1/2)
x+x1=7-4/2=3/2=1.5
y+y1/2 = 2-2/2=0
Fix a prime and let R=
{m/n∈Q:m,n∈Z
},where p
does not divide n
. Show that R
is local.
The ring R is considered, where R consists of rational numbers of the form m/n, where m and n are integers and the prime number p does not divide n. It is claimed that R is a local ring.
A local ring is a commutative ring with a unique maximal ideal. To show that R is a local ring, we need to prove that R has a unique maximal ideal.Consider the ideal I in R defined as I = {m/n ∈ R: p divides m}. To show that I is the unique maximal ideal of R, we need to demonstrate two things: (1) I is an ideal of R, and (2) there are no other maximal ideals in R except I.
For (1), we can verify that I is an ideal by checking the two conditions: closure under addition and closure under multiplication. Let x, y ∈ I and a ∈ R. Then, x = m/n and y = k/n for some integers m, n, and k, where p divides both m and k. Now, x + y = (m + k)/n, where p divides m + k, showing closure under addition. Similarly, ax = (am)/n, where p divides am, demonstrating closure under multiplication.
For (2), we assume the existence of another maximal ideal J in R. Since I is a proper subset of R and I is maximal, J must be different from I. Let z ∈ J, z ≠ 0. Then z = l/r for some integers l and r, where p does not divide r. Since J is an ideal, rz ∈ J for any r ∈ R. However, if we consider the rational number (1/r)z = (l/r^2), we find that p does not divide l/r^2, contradicting the assumption that J is a maximal ideal. Therefore, there can be no other maximal ideal in R besides I.Hence, we have shown that the ideal I is the unique maximal ideal of the ring R, proving that R is a local ring.
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select whether the following statement is always true, sometimes true, or never true. a proof should have more steps in the reason column than steps in the statement column. sometimes always never
The statement is sometimes true. The number of steps in the reason column can vary depending on the complexity of the proof and the level of detail required to explain each step
The statement that a proof should have more steps in the reason column than steps in the statement column is sometimes true. This is because the number of steps in the reason column depends on the complexity of the proof and the level of detail required to fully explain each step.
Sometimes a proof may have many steps in the statement column but only a few in the reason column if the steps are straightforward and do not require much explanation. On the other hand, some proofs may have fewer steps in the statement column but more in the reason column if the proof involves complex calculations or requires a detailed explanation of each step to fully understand.
Therefore, the number of steps in the reason column cannot always be predicted based on the number of steps in the statement column and can vary depending on the nature of the proof being presented.
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Amy cut 32 feet of chain into pieces that were each ¼ ft long. How many of these pieces did Amy have after cutting the chain? Record your answer and be sure to use the correct place value.
Amy would have 128 pieces
3. (30 pts) The equations for the orbit-plane motion of a satellite in orbit are r
ˉ
− θ
˙
2
r=− r 2
μ
+Δ 1
r θ
ˉ
+2 r
ˉ
=Δ 2
,
where u 1
and u 2
are control inputs for the satellite. Answer the following questions. A) Obtain a state-space model of the nonlinear system dynamies for the state vector defined by x=[x 1
,x 2
,x 3
,x 4
] T
= [r,θ, r
, θ
˙
] T
. B) Find out equilibrium points. You can assume that x 1c
=R, which is the nominal point for r in orbit. You need to obtain x 2e
,x 3es
and x 4k−
C) What is the linearized state-spane representation of this system? (Determine the system matrices A and B for x
˙
=Ax+Bu. You don't need to have an expression for y=Cx+Du here.)
A. State-space model of the nonlinear system dynamics, and it is valid only in the vicinity of the equilibrium points.
The state-space model of the nonlinear system dynamics is given by the following equations:
X1 = x3x2 = x4x3 = -x1^2 μ + Δ1x1x2 + 2x1 - u1x4 = -2x1θ^2 + Δ2 - uwhere
x1 = r x2 = θ x3 = r x4 = θ˙B. Equilibrium points
The equilibrium points of the system are given by the solutions to the system of equations x = 0. These equations are:
x3 = 0x4 = 0-x1^2 μ + Δ1x1x2 + 2x1 - u1 = 0-2x1θ^2 + Δ2 - u2 = 0```
Assuming that x1c = R, which is the nominal point for r in orbit, we can solve for the equilibrium points as follows:
x2e = -2Rμ/Δ1x3e = 0x4k = -2Rθ^2/Δ2C. Linearized state-space representation of the system
The linearized state-space representation of the system is given by the following equations: x = Ax + Bu
where
A = [0 1 0 0] B = [0 0 -μR/Δ1 2R/Δ2]This is a simplified version of the nonlinear system dynamics, and it is valid only in the vicinity of the equilibrium points.
The state-space model of a dynamical system is a mathematical representation of the system that uses state variables to describe the system's behavior.
The state variables are a set of variables that completely describe the system's state at a given time. The state-space model is typically used to analyze the stability and controllability of dynamical systems.
In the case of the satellite orbit-plane motion system, the state variables are r, θ, r, and θ˙. The state-space model of the system describes how these state variables evolve over time.
The equations of the state-space model can be used to analyze the stability of the system's equilibrium points. They can also be used to design controllers for the system.
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