Answer:
B. (x − 4) and (x + 8)
Step-by-step explanation:
ok nice :0
need help finding area TuT
State three "real-world" variables X, Y, and Z for which you expect a marginal association between X and Y but conditional independence controlling for Z.
Three "real-world" variables for which you expect a marginal association between X and Y but conditional independence controlling for Z are:
- X = Hours spent studying
- Y = Grades in school
- Z = Intelligence
In this scenario, there is a marginal association between the hours spent studying (X) and the grades in school (Y), as it is expected that the more time a student spends studying, the better their grades will be.
However, when controlling for intelligence (Z), the association between X and Y becomes conditional independence, as intelligence can also affect grades in school.
In other words, the relationship between X and Y is no longer significant when controlling for Z.
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someone pls help me out..
Based on the function given, the slope of the function can be found to be 1.25.
How to find the slope?The slope of a function refers to the value that the dependent variable, x, changes by as a result of a unit change in the independent variable, y.
In a linear function, the slope is m as shown below:
y = mx + b
y = dependent variable
m = slope
x = independent variable
b = y- intercept
As seen above, the slope multiplies the independent variable which means that in the function, y = 5x + 3, the slope is 5.
Question is:
What is the slope of the function?
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Yohan Blake ran the 2012 Olympic 200-meter race in 19.44 seconds. Compare his speed in that race to his speed in the 100-meter race, which he finished in 9.75 seconds. Round to the nearest hundredth.
A. 10.29 meters per second and 10.26 meters per second
B. 10.49 meters per second and 10.36 meters per second
C. 10.59 meters per second and 10.46 meters per second
D. 10.69 meters per second and 10.56 meters per second
Answer:
the answer is c btw ndnsh DC d
What are three numbers that are greater than 1/3 but less than 1/2
Answer:
11/30, 2/5, 7/15
Step-by-step explanation:
Stanley has $13,800 in a savings account that earns 14% annually. The interest is not
compounded. How much will he have in total in 6 months?
Answer:
$14,766.00
Step-by-step explanation:
Interest = principle x rate x time
I = 13800 (.14)(.5)
I = 966
Total:
Principle plus interest
13800 + 966 = 14,766
Helping in the name of Jesus.
peter drove a total of 1000 km and used 100 litre of prtrol calculate the rate of which the petrol was in kilometers per litre??
Answer:
The petrol used was 0.1 litre for every 1 kilometre.
What is the value of x?
Answer:
x = 55 degrees
Step-by-step explanation:
Angles of a triangle add up to 180 degree so we'll simply subtract the rest of the angles from 180 to get the value of x.
=> x = 180-75-50
=> x = 55 degrees
Answer:
55
Step-by-step explanation:
The sum of angles triangles will always be 180
75 + 50 is 135
180-35 = 55
The measure of AOC is 90. Find the value of x.
Answer:
x = 10 degr
Step-by-step explanation:
3x + 46 + 14 = 90
3x + 60 = 90
3x + 60 - 60 = 90 - 60
3x = 30
x = 10 deg
Answer:
Step-by-step explanation:10
32÷(14-6)+9-7x3
Ayuda porfa, con procedimiento
We discovered that the number is \(-8\) by solving the \(32/(14-6)+9-7*3\) above equation.
How then do you construct a two-point equation?Finding a slope between two points along a line and then solving again for y-intercept inside the slope-intercept formula \(y=mx+b\) allow us to build an equation for the that line. The line passing between the coordinates \((-1,6)\) and is represented by an equation in this example \((5,-4)\).
How is an equation written in standard form?\(Ax+By=C\) is the usual form for two-variable linear equations. A typical form linear equation is, for instance, \(2x+3y=5\). When a solution is provided in this format, finding both intercepts is rather simple (x and y).
\(32/(14-6)+9-7*3\)
\(= 32/ 8 + 9 - 21\)
\(= 4 +9 -21\)
\(= 13 - 21\)
\(=-8\)
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The complete and the correct form of question is:
\(32/(14-6)+9-7*3\) solve the given equation?
Kent has a collection of pennies and nickels with a value of $1.98. thenumber of pennies he has is five less than twice of nicleks. how many of each coin does kent have?
No. of pennies and nickels are 53 and 29 respectively
Let the number of pennies be x
Let the number of nickels be y
Value of pennies = $0.01x
Value of nickels = $0.05y
It is given that value of pennies and nickels = $1.98
Therefore the equation will be,
0.01x + 0.05y = 1.98
x + 5y = 198------(1)
Also, the number of pennies is five less than twice of nickels
x = 2y - 5
2y - x = 5 -------(2)
Adding equations (1) and (2) we get,
(x + 5y) + (2y - x) = 203
7y = 203
y = 29
Substituting the value of y in equation (1) we get,
x = 53
Therefore, the no. of pennies is 53 and the no. of nickels is 29
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Write the equation in standard form.
5−3(x−2y)=1−5x
Answer:
2x+6y=-4
Step-by-step explanation:
explain mathematically how you know 5y+4=10 and 5y=6 are equivalent
Answer:
see explanation
Step-by-step explanation:
Given
5y + 4 = 10 ( subtract 4 from both sides )
5y = 10 - 4 , that is
5y = 6
Thus 5y + 4 = 10 is equivalent to 5y = 6
Answer: y= 9x+6y=15
Step-by-step explanation:
If a sample mean is 92, which of the following is most likely the range of possible values that best describes an estimate for the population mean?
A. (80, 112)
B. (82, 114)
C. (76, 108)
D. (78, 110)
Answer:
I think it's c. (76,108)
Step-by-step explanation:
because 76+108 = 184 - half of which is the mean
so c. is more likely
(76, 108) is the range of possible values that best describes an estimate for the population mean.
The given sample mean is 92.
(80, 112)= 80+112/2
=96 which is not equal to 92.
(82, 114)=82+114/2
=98 which is not equal to 92.
(76, 108)= 76+108/2=92
The value 92 which is equal to 92.
(78, 110) = 78+110/2
=94 which is not equal to 92.
(76, 108) is the range of possible values that best describes an estimate for the population mean.
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please help sjsjsjsj
The area of the blue triangle is 320 square meters.
How to find the area of the blue triangle?If the scale factor between the two triangles is K, then the scale factor between the areas is K².
To find K, we can write:
11*K = 44
Solving for K
K = 44/11 = 4
Now, the area of the blue triangle will be:
area = 20*K²
area = 20*(4)² = 320
The area is 320 square meters.
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evaluate the integral by reversing the order of integration. 4 0 12 11ex2 dx dy 3y
To evaluate the integral by reversing the order of integration, we first need to draw the region of integration. From the given limits of integration, we can see that the region is a rectangle with vertices at (0,4), (0,12), (11,4), and (11,12).
Now, we can reverse the order of integration by integrating with respect to y first, and then x. The new limits of integration will be y = 4 to y = 12 and x = 0 to x = 11e^(2y/3).
So, the new integral will be:
∫(0 to 11) ∫(4 to 12) 3y e^(2x/3) dy dx
We can evaluate this integral using integration by parts. Integrating with respect to y gives us:
∫(0 to 11) [3y^2/2 e^(2x/3)] from y = 4 to y = 12
Simplifying this expression gives us:
∫(0 to 11) [36e^(2x/3) - 6e^(8x/3)]/2 dx
Now, integrating with respect to x gives us:
[27e^(2x/3) - 9e^(8x/3)] from x = 0 to x = 11
Substituting these values and simplifying gives us the final answer:
(27e^22/3 - 9e^88/3) - (27 - 9) = 27e^22/3 - 9e^88/3 - 18
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The work shows how to use long division to find (x²+
3x-9)+(x-2).
X+5
x-2x+3x-9
-(x²-2x)
5x-9
−(5x10)
The division of (x²+3x-9) by (x-2) using long division is:
Quotient: x
Remainder: 1
To divide the polynomial (x²+3x-9) by (x-2) using long division, follow these steps:
Step 1: Set up the division with the dividend (x²+3x-9) as the numerator and the divisor (x-2) as the denominator.
Write them in the long division format:
___________________
x - 2 | x² + 3x - 9
Step 2: Divide the first term of the dividend (x²) by the first term of the divisor (x). Place the result on top:
___________________
x - 2 | x² + 3x - 9
x
Step 3: Multiply the divisor (x-2) by the quotient obtained in Step 2 (x) and write the result below the dividend. Subtract this result from the dividend:
___________________
x - 2 | x² + 3x - 9
x² - 2x
____________
5x - 9
Step 4: Bring down the next term from the dividend (-9):
___________________
x - 2 | x² + 3x - 9
x² - 2x
____________
5x - 9
- 5x + 10
_______________
1
Step 5: Since there are no more terms in the dividend, the remainder is 1.
Therefore, the division of (x²+3x-9) by (x-2) using long division is:
Quotient: x
Remainder: 1
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Which angle has the greatest measure?
Answer:
It's G
Step-by-step explanation:
It has an acute angle while two of the other answers are vertical angles & the other answer choice is obtuse
The angle 12 has the greatest measure than the angle 5,7 and angle 8 option (F) ∠12 is correct.
What is an angle?When two lines or rays converge at the same point, the measurement between them is called a "Angle."
From the figure
The angle 5 and angle 7 are vertically opposite angles.
The angle 8 is an acute angle which is less than 90 degree.
The angle 12 is an obtuse angle which is greater than 90 degree.
Thus, the angle 12 has the greatest measure than the angle 5,7 and angle 8 option (F) ∠12 is correct.
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The time required to play a certain board game is uniformly distributed between 15 and 60 minutes. Use the formula U = a +(b-a) RAND() for a uniform distribution between a and b to obtain a sample of 50 outcomes and compute the mean, minimum, maximum, and standard deviation. Determine the appropriate formula. U=15+(60-15) Fifty random values generated using the formula are now provided in the problem statement. Compute the mean.
The mean when the time required to play a certain board game is uniformly distributed between 15 and 60 minute is 35.6.
What is the mean?In statistics, the mean is a measure of central tendency that is calculated by summing up a set of numerical values and dividing by the number of values in the set. The mean is also known as the arithmetic mean or the average.
For example, suppose we have the following set of numbers: 3, 5, 7, 10, and 12. To find the mean, we add up these numbers (3 + 5 + 7 + 10 + 12 = 37) and divide by the number of values in the set (5). The mean of this set of numbers is 7.4, which represents the typical or average value of the set.
The formula for the mean is:
mean = (sum of values) / (number of values)
By using the Excel formula= AVERAGE (data), sample mean will be 35.6.
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4ny = b
make y subject
y = b/4n
\(\\\\\)
Step-by-step explanation:
Given Equation : : 4ny = b for making 'y' subject→ y = b/4nperform a rotation of axes to eliminate the xy-term. (use x2 and y2 for the rotated coordinates.)6x2 − 43xy 2y2 4x 43y = 0
The rotated equation for the given function is 6\(y^2\) + 4√3xy + 2\(x^2\) - 4y + 4√x = 0.
To eliminate the xy-term in the equation 6\(x^2\) - 4√3xy + 2\(y^2\) + 4x + 4√y = 0, we can perform a rotation of axes.
Let's assume that the new coordinates after the rotation are \(x_2\) and \(y_2\). To eliminate the xy-term, we need to choose an angle of rotation that satisfies the equation:
tan(2θ) = -2√3
To find θ, we can solve for it using the inverse tangent function:
2θ = atan(-2√3)
θ = atan(-2√3) / 2
Once we have the angle of rotation \(\alpha\), we can perform the rotation by substituting the following expressions:
x = \(x_2\)cos\(\alpha\) - \(y_2\)sin\(\alpha\)
y = \(x_2\)sin\(\alpha\) + \(y_2\)cos\(\alpha\)
Now, let's substitute these expressions into the original equation and simplify:
6\((x_2cos(\alpha ) - y_2sin(\alpha ))^2\) - 4√3(\(x_2\)cos\(\alpha\) - \(y_2\)sin\(\alpha\) )(\(x_2\)sin\(\alpha\) + \(y_2\)cos\(\alpha\) )
2\((x_2sin(\alpha ) + y_2cos(\alpha ))^2\) + 4(\(x_2\)cos\(\alpha\) - \(y_2\)sin\(\alpha\) ) + 4√(\(x_2\)sin\(\alpha\) + \(y_2\)cos\(\alpha\) ) = 0
Expanding and combining like terms, we have:
6\(x_2^2\)\(cos^2\alpha\) - 12\(x_2\)\(y_2\)cos\(\alpha\) sin\(\alpha\) + 6\(y_2^2\)\(sin^2\alpha\)
4√3\(x_2^2\)cos\(\alpha\) sin\(\alpha\) - 4√3\(y_2^2\)cos\(\alpha\) sin\(\alpha\)
2\(x_2^2\)\(sin^2\alpha\) + 4\(x_2\)\(y_2\)cos\(\alpha\) sin\(\alpha\) + 2\(y_2^2\)\(cos^2\alpha\)
4\(x_2\)cos\(\alpha\) - 4\(y_2\)sin\(\alpha\) + 4√(\(x_2\)sin\(\alpha\) + \(y_2\)cos\(\alpha\) ) = 0
Next, we need to choose \(\alpha\) such that the coefficients of the cross terms (\(x_2y_2\) terms) become zero. In this case, the coefficient of \(x_2y_2\) is:
-12cos\(\alpha\) sin\(\alpha\) - 4√3cos\(\alpha\) sin\(\alpha\)
We set this equal to zero and solve for \(\alpha\) :
-12cos\(\alpha\) sin\(\alpha\) - 4√3cos\(\alpha\) sin\(\alpha\) = 0
-16cos\(\alpha\) sin\(\alpha\) = 0
cos\(\alpha\) sin\(\alpha\) = 0
This equation holds true for two cases:
cos\(\alpha\) = 0, which gives \(\alpha\) = π/2
sin\(\alpha\) = 0, which gives \(\alpha\) = 0
So, we have two possible angles of rotation: θ = 0 and θ = π/2.
Now, let's analyze both cases:
Case 1: θ = 0
If θ = 0, then the new coordinates become \(x_2\) = x and \(y_2\) = y.
Substituting this back into the original equation, we get:
6\(x^2\) - 4√3xy + 2\(y^2\) + 4x + 4√y = 0
This is the original equation without the xy-term, so no further rotation is necessary.
Case 2: θ = π/2
If θ = π/2, then the new coordinates become \(x_2\) = -y and \(y_2\) = x.
Substituting this into the original equation, we get:
6\((-y)^2\) - 4√3(-y)(x) + 2\((x)^2\) + 4(-y) + 4√(x) = 0
Simplifying, we have:
6\(y^2\) + 4√3xy + 2\(x^2\) - 4y + 4√x = 0
This is the rotated equation with the xy-term eliminated.
To summarize:
After performing the rotation of axes, we have two possible cases:
θ = 0: No further rotation is needed.
θ = π/2: The rotated equation is 6\(y_2\) + 4√3xy + 2\(x^2\) - 4y + 4√x = 0.
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(-5) x (+8)
integers
Answer:
-40
Step-by-step explanation:
Just multiple the 2 numbers like usual than add the negative to your answer
What is 0. 5¯7 expressed as a fraction in simplest form?
Answer:
5/7 cannot be simplified any further
Step-by-step explanation:
A cylinder has radius 4 inches and height 5 inches. A cone has the same radius and height.
Round Volume answers to the nearest hundredth
Cylinder
I
15
Find the volume of the cylinder. V=
Cone
B
Find the volume of the cone. V=
Answer:As it is given that, a cylinder has radius 3 inches and height 5 inches and we are to find the volume of the cylinder, also a extra information is given that is a cone has the same radius and height.
We know,
Where,
r is the radius of the cylinder.
h is the height of the cylinder.
Here, we will take the value of π as 3.14 approximately .
Now, we will substitute the given values in the formula :
Note :
Answer might be different if we take the value of π as 22/7 .
Step-by-step explanation:
Answer:
volume of cylinder= πr²h
22. ×4²×5
7
22 × 16×5
7
251.43 inches³
volume of cone=1 × πr²×h
3
1×22×4²×5
3. 7
83.81 inches ³
A circle has the equation x + y + 18x-22y = -153. What is the length of the diameter of the circle?
Answer:
777y us or do we will miss because
The length of the diameter of the circle which the equation x + y + 18x-22y = -153 is 3.5 units long.
What is the equation of circle?The equation of the circle is the equation which is used to represent the circle in the algebraic equation form with the value of center point in the coordinate plane and measure of radius.
The standard form of the equation of the circle can be given as,
\((x-h)^2+(y-k)^2=r^2\)
Here (h,k) is the center of the circle and (r) is the radius of the circle.
The equation of the circle given as,
\(x^2 + y^2 + 18x-22y = -153\)
Rearrange the equation to make it as standard form,
\(x^2 + y^2 + 18x-22y = -153\\x^2 + 18x+ y^2-22y = -153\)
Add 121 and 81 both side of the equation,
\(x^2 + 18x+81+ y^2-22y+121 = -153+81+121\\x^2 + 18x+9^2+ y^2-22y+11^2 =41\)
Using the formula of whole square,
\((x+9)^2+(x-11)^2=7^2\\(x-(-9))^2+(x-11)^2=7^2\)
Compare it with standard equation, we get the radius of the circle r is 7.
As the radius is half of the diameter. Thus, the diameter of the circle is,
\(d=\dfrac{7}{2}\\d=3.5\rm\; units\)
Thus, the length of the diameter of the circle which the equation x + y + 18x-22y = -153 is 3.5 units long.
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what is the answer!
Answer:
scatter pattern
Step-by-step explanation:
Please show work on how to get these answers
The surface area and the volume of each solid are listed below:
Case 23
A = 216 + 153√3 cm² = 481 cm², V = 324√3 cm³ = 561.18 cm³
Case 13
A = 575π m² = 1806.42 m², V = 4000π / 3 m³ = 4188.79 m³
How to determine the surface area and the volume of a solid
In this problem we must determine the surface area and the volume of each of the two solids, the following area and volume formulas are listed below:
Triangles
A = 0.5 · w · h
Rectangle
A = w · h
Circle
A = π · r²
Surface of a hemisphere
A = 2π · r²
Surface of the inclined section of a cone
A = π · r · l
Lateral surface of a cylinder
A = 2π · r · l
Volume of a prism
V = A' · l
Volume of a hemisphere
V = (2π / 3) · r³
Volume of a pyramid
V = (1 / 3) · A' · l
Where:
w - Widthh - Heightr - Radiusl - LengthA' - Base areaNow we proceed to determine the surface area and the volume of each solid:
Case 23
Surface area
A = (9 cm) · (8 cm) + (9√3 cm) · (8 cm) + (18 cm) · (8 cm) + (9 cm) · (9√3 cm)
A = 72 cm² + 72√3 cm² + 144 cm² + 81√3 cm²
A = 216 + 153√3 cm²
A = 481 cm²
V = 0.5 · (9 cm) · (9√3 cm) · (8 cm)
V = 324√3 cm³
V = 561.18 cm³
Case 13
Surface area
A = 2π · (5 m)² + 2π · (5 m) · (45 m) + π · (5 m) · (15 m)
A = 575π m²
A = 1806.42 m²
Volume
V = (2π / 3) · (5 m)³ + π · (5 m)² · (45 m) + (π / 3) · (5 m)² · (15 m)
V = 4000π / 3 m³
V = 4188.79 m³
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How do you do multiple long?
Main answer:Long multiplication is a method of multiplying two difficult-to-multiply numbers.
supporting answer:
what is multiple long?
Finding the product is not always this simple. In such cases, the long method of multiplication is used.
body of the answer:
let us understand long multiplication by taking an example
Write the two numbers one beneath the other in the order of their digits. On top, write the larger number, and on the left, a multiplication sign.Multiply the top number's one digit by the bottom number's one digit.Put a 0 below the ones digit,Multiply the top number's ones digit by the bottom number's tens digit.Multiply the top number's tens digit by the bottom number's tens digit.6.Add the two partial products
final answer: by following above steps we can perform long multiplication
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Long multiplication is a method of multiplying two difficult-to-multiply numbers.
What is multiple long?
Finding the product is not always this simple. In such cases, the long method of multiplication is used.
Let us understand long multiplication by taking an example
1. Write the two numbers one beneath the other in the order of their digits. On top, write the larger number, and on the left, a multiplication sign.
2. Multiply the top number's one digit by the bottom number's one digit.
3. Put a 0 below the one's digit,
4. Multiply the top number's ones digit by the bottom number's tens digit.
5. Multiply the top number's tens digit by the bottom number's tens digit.
6. Add the two partial products
By following the above steps we can perform long multiplication
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A scuba diver dives in a straight line from a boat to a coral reef, as shown below.
Before the dive, the diver has 2200 litres of gas in his dive tank.
When diving from the boat to the reef, he uses an average of 4.6 litres of gas
per metre travelled.
How much gas does the diver have in his tank when he reaches the coral reef?
Give your answer to the nearest litre.
34 m
123 m
Not drawn accurately
Answer:
A department has five employees with five jobs to be performed . the time in hours each man will take to perform each jobs is given the effectiveness matrix .
A drawer contains black socks and white socks. 70% of the socks are black socks. A
number generator simulates randomly selecting 10 socks from the drawer. The
number generator is used 10 times and the number of black socks in each trial is
shown in the dot plot.
0 1 2 3 4 5 6 7 8 9 10
Which description is correct about the number generator being fair or not?
The number generator is not fair.
The correct percentage of black socks was not
chosen at all.
The number generator is fair. It picked the approximate percentage of black
socks most of the time.
The number generator is not fair. In three experiments, it picked black socks less
than 50% of the time.
The number generator is fair. It only picked black socks half of the time.
Answer:
Based on the given information, it is not possible to definitively determine whether the number generator is fair or not. However, we can make some observations and inferences:
We know that 70% of the socks in the drawer are black, which means that in a random selection of 10 socks, we would expect to see around 7 black socks on average.
The dot plot shows the number of black socks in 10 trials of the number generator. We can see that the number of black socks varies from 0 to 10, with some frequencies being higher than others.
Without knowing the exact frequencies or probabilities, we can see that the dot plot does not appear to be centered around 7 black socks, which is what we would expect from a fair number generator. However, it is difficult to determine whether the deviations from 7 are statistically significant or not, without more information.
Therefore, based on the given information, the most accurate statement is:
The number generator's fairness cannot be determined with certainty from the given data, but there are indications that it may not be perfectly fair.
Step-by-step explanation: