Answer:
triangel, hexagon, square
Step-by-step explanation:
because thy are just better then the oters and hexagons are more famous
Q5. The volume of a cone is 128 cm³. The height of the cone is three time the length of the diameter of its base. Calculate the height of the cone.
The height of the cone in discuss as required to be determined is; 16.38 cm.
What is the height of the cone as described?Since the height of the cone is three times the length of the diameter of its base;
h = 3d;
d = h/3
Therefore, radius,
r = d/2
r = h/3 ÷ 2
multiply by the reciprocal of 2
r = h/3 × 1/2
r = h / 6.
Volume of a cone, V = (1/3) πr²h
128 = (1/3) × (22/7) × (h³/36)
h³ = 4398.55
h = 16.38 cm.
Ultimately, the height of the cone is; 16.38 cm.
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help plz ill give u BRAINEST
Answer:
First option, relation 1 and relation 4
Step-by-step explanation:
Because they both cross one of the two axes once, which from what I remember, makes it a function.
Hope this makes sense, and please correct me if I'm wrong :)
choose the term described. a variable in a program that represents a class and is created by an assignment statement a function created within a class definition
The terms that describe, a variable in a program that represents a class and is created by an assignment statement a function created within a class definition are:
instance - a variable in a program that represents a class and is created by an assignment statement
method - function created within a class definition
Here, we have,
given that,
we have to find the terms that describe, a variable in a program that represents a class and is created by an assignment statement a function created within a class definition.
now, we know that,
A class is made up of the members fields and methods.
Fields are variables in the class and methods are functions in the class.
An instance is a copy of the class also called an object.
so, we get,
The term described as "a variable in a program that represents a class and is created by an assignment statement" is:
Object i.e. instance.
The term described as "a function created within a class definition" is:
Method.
Hence, The terms that describe, a variable in a program that represents a class and is created by an assignment statement a function created within a class definition are:
instance - a variable in a program that represents a class and is created by an assignment statement
method - function created within a class definition
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One week, Gerard wrote a check for $8.75, deposited $4.50, and wrote another check for $2.50. What was the change to Gerard's bank account that week?
Answer:you have to subtract first and then add the 2.50 and that’s your answer
Step-by-step explanation:
Maria plans to make a triangular center island along the road. The said plan is illustrated at the image attached. She was able to put a fence around the lot which measures LT = 3m and OL = 3m. The said land area is an example of an oblique triangle which does not contain any right angle. If m∠T = 70 and m∠L = 65, what could be the measurement of ∠O and TO (round off to the nearest whole number)?
WITH SOLUTION!!!
The sum of interior angles of triangle sum up to 180°
Hence,
∠O + 70° + 65° = 180°
∠O = 180° - 65° - 70°
∠O = 45°
∴ The angle ∠O is 45 degrees.
To find length of TOUse cosine rule: a² = b² + c² - 2bc cos(A)
Hence,
TO² = 3² + 3² - 2(3)(3) cos(65)
TO² = 10.39287129
To = √10.4
TO = 3.22 ≈ 3 meters (rounded to nearest whole number)
∴ The length of TO is 3 meters.
1. If m varies directly as v2 and m = 3, when v =2, calculate the value of m when v =9.
(3marks)
Answer:
m = 2/3\(2 \frac{3 \\ }{?} \)© In a class full of men and women,4/9 of the class are women.
What is the ratio of men to women in its simplest form?
Answer:
4:9
Step-by-step explanation:
what spreads and becomes very annoying
Answer:
itchiness, rash,corona virus, rumors
Step-by-step explanation:
Answer:
\(coronavirus\)
Solve: 5/6 × 2/3 Simplify your answer.
Answer:
5/9 or 0. 5 repeating
Step-by-step explanation:
Hope this helps!
Answer:
0.55555555555
Step-by-step explanation
Can some one help me please?? x+7 1/3=18 2/3
Answer:
Solve for x by simplifying both sides of the equation, then isolating the variable.
Exact Form: x = 34 /3
Decimal Form: x = 11. ¯ 3
Mixed Number Form: x = 11 1 /3
Step-by-step explanation:
hope this helps!
you are testing the claim that the mean gpa of night students is greater than the mean gpa of day students. you sample 30 night students, and the sample mean gpa is 2.11 with a standard deviation of 0.78 you sample 55 day students, and the sample mean gpa is 1.98 with a standard deviation of 0.71 calculate the test statistic, rounded to 3 decimal places
The test statistic is 0.764
Given that,
You are evaluating the claim that night students have higher average grades than day pupils. You take a sample of 30 night students, and their mean grade point average is 2.11 with a 0.78 standard deviation. You take a sample of 55 day students, and their average grade point average is 1.98 with a 0.71 standard deviation.
H₀ : u1 <= u2
Ha : u1 > u2
n1 =30 ,n2 =55
s1 = 0.78, s2 =0.71
x1 = 2.11, x2= 1.98
t = x1 -x2 /√s1²/n1 + s2²/n2
t = 2.11 - 1.98 / √0.60/30 + 0.50/55
t = 0.13/√0.02+0.009
t =0.13 / 0.17 = 0.764.
Therefore, the test statistic is 0.764
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Need help asap.
Calculate the residuals for the scatterplot.
The residuals of the regression are 0.05, -0.5, 0.15, 0.07, 0.35, -0.15, -0.5, -0.15, 0.03 and 0.61
How to determine the residuals?The regression equation is given as:
y = 0.138x + 1.166
Next, we calculate the predicted values (y) at the corresponding x values.
So, we have:
y = 0.138 * 18 + 1.166 = 3.65
y = 0.138 * 21.9 + 1.166 = 4.19
y = 0.138 * 18 + 1.166 = 3.65
y = 0.138 * 20 + 1.166 = 3.93
y = 0.138 * 18 + 1.166 = 3.65
y = 0.138 * 0.7 + 1.166 = 1.26
y = 0.138 * 21.9 + 1.166 = 4.19
y = 0.138 * 0.7 + 1.166 = 1.26
y = 0.138 * 16.7 + 1.166 = 3.47
y = 0.138 * 15.5 + 1.166 = 3.31
The residuals are then calculated using:
Residual = Actual value - Predicted value
So, we have:
Residual = 3.7 - 3.65 = 0.05
Residual = 3.69 - 4.19 = -0.5
Residual = 3.8 - 3.65= 0.15
Residual = 4 - 3.93 = 0.07
Residual = 4 - 3.65= 0.35
Residual = 1.11 - 1.26 = -0.15
Residual = 3.69 - 4.19 = -0.5
Residual = 1.11 - 1.26 = -0.15
Residual = 3.5 - 3.47 = 0.03
Residual = 3.92 - 3.31 = 0.61
Hence, the residuals are 0.05, -0.5, 0.15, 0.07, 0.35, -0.15, -0.5, -0.15, 0.03 and 0.61
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Answer:
The residuals of the regression are 0.05, -0.5, 0.15, 0.07, 0.35, -0.15, -0.5, -0.15, 0.03 and 0.61
How to determine the residuals?
The regression equation is given as:
y = 0.138x + 1.166
Next, we calculate the predicted values (y) at the corresponding x values.
So, we have:
y = 0.138 * 18 + 1.166 = 3.65
y = 0.138 * 21.9 + 1.166 = 4.19
y = 0.138 * 18 + 1.166 = 3.65
y = 0.138 * 20 + 1.166 = 3.93
y = 0.138 * 18 + 1.166 = 3.65
y = 0.138 * 0.7 + 1.166 = 1.26
y = 0.138 * 21.9 + 1.166 = 4.19
y = 0.138 * 0.7 + 1.166 = 1.26
y = 0.138 * 16.7 + 1.166 = 3.47
y = 0.138 * 15.5 + 1.166 = 3.31
The residuals are then calculated using:
Residual = Actual value - Predicted value
So, we have:
Residual = 3.7 - 3.65 = 0.05
Residual = 3.69 - 4.19 = -0.5
Residual = 3.8 - 3.65= 0.15
Residual = 4 - 3.93 = 0.07
Residual = 4 - 3.65= 0.35
Residual = 1.11 - 1.26 = -0.15
Residual = 3.69 - 4.19 = -0.5
Residual = 1.11 - 1.26 = -0.15
Residual = 3.5 - 3.47 = 0.03
Residual = 3.92 - 3.31 = 0.61
Hence, the residuals are 0.05, -0.5, 0.15, 0.07, 0.35, -0.15, -0.5, -0.15, 0.03 and 0.61
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Step-by-step explanation:
Find the output when the input is n input 1,2,3,4,n output
-6,-8,-10,-12
The expression that represents the output value when the input is n is -4 - 2n
How to determine the output value for the input n?From the question, the input parameters are given as
Input 1,2,3,4,n
Similarly, the output parameters are given as
output: -6,-8,-10,-12
So, we have the following table of values
1,2,3,4,n
-6,-8,-10,-12
From the above table of values, we have the following parameters
Sequence type = arithmetic sequenceFirst term, a = -6Common difference, d = -2The output value for the input n is then calculated as
Tn = a + (n - 1) * d
So, we have
Tn = -6 + (n - 1) * -2
Open brackets
Tn = -6 - 2n + 2
Evaluate the like terms
Tn = -4 - 2n
Hence, the output value for the input n is -4 - 2n
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use the circle unit to evaluate cos(23/6)
Given
\(\begin{gathered} \cos \text{ }\frac{23\pi}{6} \\ A\text{ complete revolution in a circle is 2}\pi \\ We\text{ have to re-write }\frac{23\pi}{6}\text{ in such a way that it will not be more than 2}\pi\text{ } \\ \text{Hence, } \\ cos\frac{23\pi}{6}\text{ = cos(}\frac{23\pi}{6}-\frac{24\pi}{6}) \\ \cos \text{(}\frac{23\pi}{6})\text{ = cos(}\frac{-\pi}{6}) \end{gathered}\)The representation on the unit circle is shown below
Going round the circle in the negative direction, we realize
\(\cos (\frac{-\pi}{6})\text{ = cos(}\frac{11\pi}{6})\text{ = }\frac{\sqrt[]{3}}{2}\)\(\text{The answer is }\frac{\sqrt[]{3}}{2}\)Which model shows two equal expressions when the value of x is 4?
Sorry if the picture is dark
3a. The average for the statistics exam was 75 and the standard deviation was 8.
Andrey was told by the instructor that she scored 1.5 standard deviations below
the mean. What was Andrey's exam score?
Answer:
63
Step-by-step explanation:
The formula to when given the number of standard deviations below the mean x =μ - nσ
Where:
x = raw score
μ is the population mean = 75
σ is the population standard deviation = 8.
n = number of standard deviations below the mean
Hence
x = 75 - 1.5 × 8
x = 75 - 12
x = 63
Therefore, Andrey's exam score is 63
The volume V of an ideal gas varies directly with the temperature T and inversely with the pressure P. cylinder 50 liters contains oxygen at a temperature of 200 K and a pressure of 6 atmospheres , what would the gas pressure be if the volume was changed to 25 liters and the temperature raised to 250 K?
Answer:
15 atm
Step-by-step explanation:
V varies directly with T and inversely with P.
V = kT/P
When T = 200 and P = 6, V = 50.
50 = k (200) / (6)
k = 1.5
When V = 25 and T = 250:
25 = 1.5 (250) / P
P = 15
Given that we know the relation between volume, pressure and temperature (given for the ideal gas), we want to find the change in pressure associated to the given change in volume and temperature.
We will see that the pressure after the change is 15 atm.
Let's see how to solve this problem:
So we start by knowing that the volume depends directly on the temperature and inversely on the pressure, then the relation is something like:
V = k*(T/P)
Where k is a constant.
We know that a cylinder of 50lt is at a temperature of 200K and with a pressure of 6 atm, replacing that in the above equation we get:
50lt = k*(200K/6atm)
With this we can find the value of k:
50lt*(6atm/200K) = k = 1.5 lt*atm/K
Then the equation is just:
V = (1.5 lt*atm/K)*(T/P)
Now the problem says that the volume is 25lt and the temperature is 250K, replacing that in the equation we get:
25lt = (1.5 lt*atm/K)*(250K/P)
Solving for P we have:
P = (1.5 lt*atm/K)*(250K/25lt) = 15atm
Concluding, the pressure is after the change is 15 atm
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Which one of the following statements is false?
A. To compute r, the form of the relationship should be linear.
B. If you correlate two quantitative variables, called "x" and "y," changing the units of measurement for "x" and "y" will not change the correlation between "x" and "y."
C. If you correlate two quantitative variables, called "x" and "y," the correlation will not change if you switch which variable is "x" and which is "y."
D. The correlation coefficient is affected by outliers.
E. If two quantitative variables are strongly correlated, we should conclude that one variable causes the other.
A. To compute r, the form of the relationship should be linear: This statement is true.
The correlation coefficient (r) measures the strength and direction of the linear relationship between two quantitative variables. If the relationship is not linear, the correlation coefficient may not accurately represent the relationship between the two variables.
B. If you correlate two quantitative variables, called "x" and "y," changing the units of measurement for "x" and "y" will not change the correlation between "x" and "y": This statement is true.
Changing the units of measurement for the variables will only change the scale of the data but will not affect the relationship between the variables. Therefore, the correlation coefficient remains the same.
C. If you correlate two quantitative variables, called "x" and "y," the correlation will not change if you switch which variable is "x" and which is "y": This statement is true.
The correlation coefficient measures the relationship between two variables, regardless of which variable is labeled "x" and which is labeled "y." Switching the labels will only affect the interpretation of the relationship, not the correlation coefficient itself.
D. The correlation coefficient is affected by outliers: This statement is true.
Outliers are extreme values that do not follow the general pattern of the data. They can significantly affect the correlation coefficient, making it appear stronger or weaker than it actually is.
Therefore, it is important to examine the data for outliers before interpreting the correlation coefficient.
E. If two quantitative variables are strongly correlated, we should conclude that one variable causes the other: This statement is false.
Correlation does not imply causation. Just because two variables are strongly correlated, it does not mean that one variable causes the other. There could be other variables or factors that influence the relationship between the two variables.
Therefore, it is important to consider other evidence and conduct further research before making causal claims.
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Describe the method used to integrate sin °x
Choose the correct answer below.
O A. Rewrite sin °> as tan x cos 3x, then use the substitution u = cos x.
O B. Rewrite sin °x as (1 - cos 2x) sinx, then use the substitution u = cos x.
O C. Rewrite sin °x as ( sin ?x) sin x, then use a half-angle formula to rewrite the sin ? term.
O D. Rewrite sin °x as (1 - cos 2x) sinx, then use a half-angle formula to rewrite the cos ^x term.
The correct answer is option B. Rewrite sin °x as (1 - cos 2x) sinx, then use the substitution u = cos x.
What is sine?
Sine is a trigonometric function that relates the ratio of the length of the side opposite an angle in a right triangle to the length of the hypotenuse. In a right triangle, the sine of an angle is defined as the ratio of the length of the side opposite the angle to the length of the hypotenuse.
Mathematically, the sine function is denoted as sin(x), where x is the angle. The sine function takes an angle in radians as its input and returns the corresponding sine value.
By using the identity \(sin^2(x) + cos^2(x) = 1\), we can rewrite sin °x as (1 - cos 2x) sinx.
Then, we can make the substitution u = cos x, which allows us to express the integral in terms of u. This substitution simplifies the integral and makes it easier to evaluate.
Therefore, the correct method to integrate sin °x is to rewrite it as (1 - cos 2x) sinx and then use the substitution u = cos x.
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Suppose Ruth Ann has 4 routes she can choose from to get from school to the library and 6 routes from the library to her home. How many routes are there from Ruth Ann's school to her home with a stop at the library?
Answer:
ok i will help
Step-by-step explanation:
so she has 4 choices the first time. And each of those four branches off to 5 possibilities. so the answer is 4*5=20
Answer:
10 routes to her home with a stop at the library
find the gradient and y intercept of 3x+4y=5
Answer:
gradient = - \(\frac{3}{4}\) , y- intercept = \(\frac{5}{4}\)
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Given
3x + 4y = 5 ( subtract 3x from both sides )
4y = - 3x + 5 ( divide terms by 4 )
y = - \(\frac{3}{4}\) x + \(\frac{5}{4}\) ← in slope- intercept form
with slope m = - \(\frac{3}{4}\) and y- intercept c = \(\frac{5}{4}\)
A line contains the points (4, 2) and (0, -1). What is the equation of the line?
D
y = 2x - 6
B
3
y = = X - 1
4
С
1
y = =X+ 1
4
D
4
-X
3
10
Answer:
y=3/4x-1 or 4y+-3x=-4
Step-by-step explanation:
If the line is (4,2) and (0,-1) then you have to first find the slope (rise-over-run) which is 3/4. The y-intercept is -1.
y=mx+b
Slope-Intercept Form:
y=(slope)x+(y-intercept)
so,
y=(3/4)x-1
Standard Form:
4y+-3x=-4
if a figure has all points the same distance from the center then the figure is a circle if a figure does not have all the points the same distance from the center then the figure is not a circle is it a counterexample b law of inverse see the law of syllogism or d the law of contrapositive
EXPLANATION
Let's see the facts:
We have the same distance from the center, we can assevere that the picture is a circle.
We can see that this is a the Law of Inverse because it says that if the conditional statement:
Conditional Statement--> If p (Hypothesis), then q (Conclusion)
Inverse ---------------------> If ~p, then ~q(Conclusion) [Negation]
Hence, the answer is the option b--> Law of Inverse
Using an example, outline the steps involved in performing a
Wald test to test significance of a sub-group of coefficients in a
multiple regression model.
The Wald test is a statistical test that can be used to test the significance of a group of coefficients in a multiple regression model.
The test statistic is calculated as the ratio of the estimated coefficient to its standard error. If the test statistic is significant, then the null hypothesis that the coefficient is equal to zero can be rejected.
Suppose we have a multiple regression model with three independent variables: age, gender, and education. We want to test the hypothesis that the coefficients for age and education are both equal to zero. The Wald test statistic would be calculated as follows:
Test statistic = (Estimated coefficient for age) / (Standard error of estimated coefficient for age) + (Estimated coefficient for education) / (Standard error of estimated coefficient for education)
If the test statistic is significant, then we can reject the null hypothesis that the coefficients for age and education are both equal to zero. This would mean that there is evidence that age and education are both associated with the dependent variable.
The Wald test is a powerful tool that can be used to test the significance of a group of coefficients in a multiple regression model. However, it is important to note that the test statistic is only valid if the assumptions of the multiple regression model are met. If the assumptions are not met, then the p-value of the Wald test may be inaccurate.
Here are some of the assumptions of the multiple regression model:
* The independent variables are independent of each other.
* The dependent variable is normally distributed.
* The errors are normally distributed.
* The errors have constant variance.
If any of these assumptions are not met, then the Wald test may not be accurate.
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find 5 irrational number between 1/7 and 1/4
Five irrational number between 1/7 and 1/4 are 0.142857142857..., √2/5, π/10, e/8, √3/7.
To find five irrational numbers between 1/7 and 1/4, we can utilize the fact that between any two rational numbers, there are infinitely many irrational numbers. Here are five examples:
0.142857142857...
This is an example of an irrational number that can be expressed as an infinite repeating decimal. The decimal representation of 1/7 is 0.142857142857..., which repeats indefinitely.
√2/5
The square root of 2 (√2) is an irrational number, and dividing it by 5 gives us another irrational number between 1/7 and 1/4.
π/10
π (pi) is another well-known irrational number. Dividing π by 10 gives us an irrational number between 1/7 and 1/4.
e/8
The mathematical constant e is also irrational. Dividing e by 8 gives us an irrational number within the desired range.
√3/7
The square root of 3 (√3) is another irrational number. Dividing it by 7 provides us with an additional irrational number between 1/7 and 1/4.
These are just a few examples of irrational numbers between 1/7 and 1/4. In reality, there are infinitely many irrational numbers in this range, but the examples provided should give you a good starting point.
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What is the solution to the system of equations graphed below? Pls Quick
what are the minimum and maximum temperatures in the house ?
Answer:
I mean, I think it varies by house and by location but a general range would be:
Min: 64 *F
Max: 74 *F
An equivalent expression for 16x − 8
Answer:
2x-1
Step-by-step explanation:
Someone be generous & help me please I’ll return the favor
Answer:
Step-by-step explanation:
help ASAP and SHOW YOUR WORK i’ll mark brainliest!
Answer:
x = 4
Step-by-step explanation:
4x-7y=37 (1)
2x+7y=-13 (2)
(1)+(2)
6x=24
6x=24 (divide both sides by 6)
x = 4