≈ 24 cm
Step-by-step explanation:Hi there !
c = 2πr } => c = πd => d = c/π
2r = d
replace c ; π
π =3.14
d = 74cm/3.14
= 23.5668
≈ 24 cm
Good luck !
Using the Method of Undetermined Coefficients, write down the general solution to y(4) + 2y(³)+2y" = 8et +21te¯t +2e¯t sin (t). Do not evaluate the related undetermined coefficients.
The general solution will consist of the complementary solution, which satisfies the homogeneous equation, and the particular solution, which satisfies the non-homogeneous part of the equation.
First, we find the complementary solution by assuming y = e^(rt) and substituting it into the homogeneous equation. This leads to a characteristic equation r⁴ + 2r³ + 2r² = 0, which can be factored as r²(r² + 2r + 2) = 0. The roots of this equation are r = 0 (with multiplicity 2) and r = -1 ± i.
The complementary solution, y_c(t), is given by y_c(t) = c₁\(e^(0t)\) + c₂te^(0t) + c₃\(e^(-t)\)cos(t) + c₄\(e^(-t)\)sin(t), where c₁, c₂, c₃, and c₄ are constants determined by initial conditions.
Next, we find the particular solution using the Method of Undetermined Coefficients. We assume a form for the particular solution based on the form of the non-homogeneous terms. In this case, we assume a particular solution of the form y_p(t) = Aet + Bte^(-t) + Csin(t) + Dcos(t), where A, B, C, and D are undetermined coefficients.
Substituting this particular solution into the original equation, we can determine the values of the undetermined coefficients by comparing like terms. However, we are not asked to evaluate these coefficients in this problem.
Finally, the general solution is obtained by combining the complementary solution and the particular solution:
y(t) = y_c(t) + y_p(t).
The specific values of the undetermined coefficients can be determined by applying initial conditions or boundary conditions if provided.
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the total of two number is 146
one of the number is a multiple of 11
the other one is a multiple of 17, find the two numbers
The two amount of numbers are 11 and 135. 11 is a multiple of 11 and 135 is a multiple of 17. The sum of the two numbers is 146.
Step 1: One of the numbers is a multiple of 11
Let the number be 11x, where x is an integer
Step 2: The total of the two numbers is 146
Therefore, 11x + 17y = 146, where y is an integer
Step 3: Solve the equation
11x + 17y = 146
11x = 146 - 17y
x = (146 - 17y) / 11
Step 4: Find the two numbers
x = (146 - 17y) / 11
For y = 1, x = 11
Therefore, the two numbers are 11 and 17.
The two numbers that add up to 146 are 11 and 135. 11 is a multiple of 11, which means it is divisible by 11 without any remainder. 135 is a multiple of 17, which means it is divisible by 17 without any remainder. When these two numbers are added together, the sum is 146. This means that 11 and 135 are the two numbers that add up to 146. 11 is a multiple of 11 and 135 is a multiple of 17, which explains why the sum of the two numbers is 146. The two numbers together can be used to represent a variety of different mathematical equations, such as the addition of two integers or the multiplication of two fractions. Knowing the two numbers that add up to 146 can be useful in a variety of different scenarios, such as solving math problems or accounting for the total of two items.
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I WILL GIVE BRAINLIEST IF ANSWER CORRECT
Solve the following inequality: 3 < x/2 + 1 *
Answer: x>9
Step-by-step explanation:
3 < x/2+1
switch sides: x/2+1 > 3
Multiply sides by 3: 3x/2+1 > 3*3
Simplify: x>9
You need a piece of paper to measure 56.34 cm if you tape two together that each measure 35.87 cm, how much do you need to cut off?
Answer:You need to 56.34, by 35.87. And you get your answer. 20.47!
Step-by-step explanation:
PLEASE ANSWER MY QUESTION FROM MY PROFIL!
Have a great day!
Answer:
If
KM
and
NP
are parallel lines and mNOQ = 55°, what is mPOL?
97.8
Step-by-step explanation:
If f (x) = one-ninth x minus 2, what is f>1(x)
Answer: f-1(x) = 9x + 18.
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = x - 2 ( add 2 to both sides )
y + 2 = x
Multiply through by 9 to clear the fraction
9y + 18 = x
Change y back into terms of x
(x) = 9x + 18
Answer:
Answer: f-1(x) = 9x + 18.
Step-by-step explanation:
Is 1 1 2 3 5 8 an arithmetic sequence?
No, 1 1 2 3 5 8 is not an arithmetic sequence. An arithmetic sequence is a sequence of numbers in which each term is obtained by adding a constant to the previous term.
Thus, the difference between successive terms is the same. In the given sequence, the difference between terms 1 and 2 is 0, between terms 2 and 3 is 1, between terms 3 and 5 is 2, and between terms 5 and 8 is 3. Therefore, the difference between successive terms is not the same and hence, 1 1 2 3 5 8 is not an arithmetic sequence.
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Combine any like terms in the expression. If there are no like terms, rewrite the expression. 10f + 6 + 5-8
The expression when evaluated is 10f + 3
How to evaluate the expressionFrom the question, we have the following parameters that can be used in our computation:
10f + 6 + 5-8
Collect the like terms
So, we have the following representation
10f + 6 + 5-8 = 10f + 6 + 5-8
Evaluate the like terms in the expression
So, we have the following representation
10f + 6 + 5-8 = 10f + 3
Hence, teh expression is 10f + 3
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The Woodman Firewood Company delivers natural firewood to homes in Manhattan,
They charge a certain amount per cord for firewood and a fixed amount for each delivery,
no matter how many cords are delivered. My bill from WFC last winter was $155 for one
cord of wood, and my neighbor's bill was $215 for one and one-half cords. What is the
charge for each cord of wood and what is the delivery charge?
Answer:
step by step and the dog got 10 fire wood
If the values of the expressions below were plotted on a number line, which expression would be closest to -10? A. -15 B. -7 C. 1 D. 11
Answer:
-7
Step-by-step explanation:
Write an equation in point-slope form for the line that passes through the point with the given slope.
(–2,–4); m=3
Answer:
x + y = -6
Step-by-step explanation:
Just put x and y and add the number on the RHS
Its really not that hard
But i hope it helped
Which statement about the line 4x+y = -24 is true?
Answer:
(B) is true
4 x + y = 4 * (-6) + 0 = -24 and is on the line
Answer:
B. (-6, 0) is on the line
Step-by-step explanation:
The points of concern are those where y=0. Using that in the equation, we find the x-value to be ...
4x +0 = -24
x = -24/4 = -6
That is, the point (-6, 0) is on the line and is a solution to the equation.
__
Additional comment
Answer choices C and D can be rejected immediately, because they are nonsense. If a point is on the line, it IS a solution. It will not be on the line if it is not a solution.
you are driving on a hot day when your car overheats and stops running. the car overheats at 280°f and can be driven again at 230°f. when it is 80°f outside, the cooling rate of the car is r
To find the cooling rate of the car, we need to determine the temperature decrease per unit of time.
Given that the car overheats at 280°F and can be driven again at 230°F, we can calculate the temperature difference:
Temperature difference = overheating temperature - driving temperature
Temperature difference = 280°F - 230°F
Temperature difference = 50°F
Since the cooling rate of the car is not explicitly given, we cannot directly determine it. However, we can make some assumptions based on the information provided.
Assuming that the cooling rate is linear, we can calculate the temperature decrease per degree Fahrenheit.
Temperature decrease per degree Fahrenheit = temperature difference / (overheating temperature - outside temperature)
Temperature decrease per degree Fahrenheit = 50°F / (280°F - 80°F)
Temperature decrease per degree Fahrenheit = 50°F / 200°F
Temperature decrease per degree Fahrenheit = 0.25°F
Therefore, the cooling rate of the car would be 0.25°F per degree Fahrenheit.
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You earn $12.00 an hour working at a fast food restaurant. Your most recent paycheck
was for $564. How many hours did you work?
Answer:
47 hours
Step-by-step explanation:
564/12 = 47
Answer:
47 hours
Step-by-step explanation:
564÷12.00= 47
Marilou ,a buyer of a lot,pays Php10,000 every month for ten years. If money 0. 08 compounded annually,how much is a cash value of a lot?
If money 0.08 or 8% compound interest annually, then Marilou makes a lot of money of 834,323.90 annually.
Compound Interest rate:
Compound interest is interest on savings calculated on the original principal amount or money and accrued interest from previous periods.
The power of "interest plus interest" or compound interest is thought to have its origins in 17th century Italy. This will increase faster than simple interest, which is calculated on the principal only.
Capitalization increases capital at an accelerated rate, the more periods of capitalization, the greater the capitalization.
Because the payments are made monthly and the interest rate is compounded annually, we must convert the interest rate from annual compound to monthly compound.
Given that:
Php = 10000/ month
Duration 10 years.
Now,
If the interest rate is 8% annually then,
8% = 1 + 0.08 =1.08¹⁾¹²
= 1.00643403011 - 1 x 12 x 100=
7.720% compounded monthly.
And also,
PV = 0; P = 10000; R = 0.07720836132 / 12;
N = 10× 12; P× (1 + R)ⁿ⁻¹)× ((1 + R)⁻ⁿ)× R⁻¹)
And,
Present Value = 834,323.90.
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Find the value of x. (I really need help I will make it worth A LOT of points!)
Answer:
i'm going to say 12 if i'm wrong i'm sorry
Step-by-step explanation:
in attempting to forecast the future demand for its products using a time-series forecasting model where sales/ demand is dependent on the time-period (month), a manufacturing firm builds a simple linear regression model. the linear regression output is given below:
SUMMARY OUTPUT Regression Stas Multiple 0.942444261 R Square 0.64945812 Adjusted R Square 0.964261321 Standard Co 2.685037593 Obsero 24 ANOVA Regression Residus Total $ MS F Significancer 1 10377.01761 1037701701 149.567816 1,524436 21 22158.6073913 7 200428877 23 10515.25 Intercept X Variables Comce Standardmor Lower 09 Uper SS LOWESSOS 38076086 11315418943365568547 2,037402035707474042230444 35.72982747 00.42264 3.003013043 0070177439 37.93400239 1.5403212839708085 3.188117002 2039700011117002
What is the estimated simple linear regression equation? 1) Forecast demand (Y) - 3.004 + 38.076 X 2) Forecast demand (Y) - 38.076 +3.004 X 3) Forecast demand (Y) - 0.985 +3.004 X 4) Forecast demand (Y) - 3.004 +0.985 X
The estimated simple linear regression equation is:
Forecast demand (Y) = 0.985 + 3.004X
The estimated simple linear regression equation can be obtained from the given output. In the regression output, the intercept is represented as "Intercept" and the coefficient for the X variable is represented as "X Variables Coefficients".
From the output, we can see that the intercept value is 0.985 and the coefficient for the X variable is 3.004.
This equation represents the relationship between the time-period (X) and the forecasted demand (Y). The intercept value (0.985) represents the estimated demand when the time-period is zero, and the coefficient (3.004) represents the change in demand for each unit increase in the time-period.
It's important to note that the equation is estimated based on the given data, and its accuracy and reliability depend on the quality and representativeness of the data.
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If f(x)=(2x)^2, find f(-4).
Answer:
f(x)=64
Step-by-step explanation:
Simplify: 8 + 14 – 5 - 7 + 3 - 7 - 4
Answer:
2
Step-by-step explanation:
Answer:
\(2\)
Step-by-step explanation:
\(8+14-5-7+3-7-4\)
We'll Follow the PEMDAS order of operations:-
Add and subtract:-
8+14=22
\(22-5-7+3-7-4\)
22-5=17
\(17-7+3-7-4\)
17-7=10
\(10+3-7-4\)
10+3=13
\(13-7-4\)
13-7=6
\(6-4\)
\(2\)
OAmalOHopeO
In 2012 there were approximately 8,950 public libraries in the United States. A survey found that 76% of those libraries offered free access to electronic books. Based on this information, how many public libraries offered free access to electronic books in 2012?
Answer:
6,802
Step-by-step explanation:
76 6,802
-- = ---
100 8,950
Multiply 8950 times 76, then divide 680,200 by 100, which equals 6,802.
42 = -48 + 3r
This is some random stuff the teacher didn’t teach us about
Answer:
\(42 = - 48 + 3r\)
add 48 to either sides:
\(42 + 48 = ( - 48 + 3r) + 48 \\ 90 = 3r \\3r = 90\)
divide all sides by 3:
\( \frac{3r}{3} = \frac{90}{3} \\ \\ { \boxed{ \boxed{r = 30}}}\)
Answer:
r = 30
Step-by-step explanation:
42 = -48 + 3r
First, we will add 48 to both sides so that r can be isolated42 + 48 = -48 + 48 + 3r
Then, we will add90 = 3r
Then to isolate r, we have to get rid of the 3To get rid of the 3, we will divide by 3 on both sides\(\frac{90}{3} =\frac{3r}{3}\)
Then, divide30 = r
determine the value of y^12 when y= 10^ -1/6
Answer: \(\boxed{\frac{1}{100}\ or\ 0.01}\)
Step-by-step explanation:
Determine the value of \(y^{12} \ when\ y=10^{-\frac{1}{6}\)
\(=(10^{-\frac{1}{6} })^{12}\)
\(=\frac{1}{100}\ or\ 0.01\)
\(~\hspace{7em}\textit{negative exponents} \\\\ a^{-n} \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^{-n}} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^{-m}\implies a^{n-m} \\\\[-0.35em] ~\dotfill\\\\ y^{12}\hspace{5em}y=10^{-\frac{1}{6}}\qquad \implies \qquad \left( 10^{-\frac{1}{6}}\right)^{12}\implies 10^{-\frac{1}{6}\cdot 12} \\\\\\ 10^{-2}\implies \cfrac{1}{10^2}\implies \cfrac{1}{100}\)
why are circles so important to these constructions write out a concise explanation of the importance of circles in creating equilateral triangles why did euclid use circles to create his equilateral triangles in proposition 1 how does construction of a circle ensure that all relevant segments are of equal length
Answer:
A circle is the set of points at a certain distance from the center. Take the desired base. Put the points of the compass on each end. Leaving one point in place rotate the other to create an arc. Do the same with the other end. Where the arcs meet is the apex of the triangle. Connect two sides to the base. The sides are the desired length because they form a radius of a circle.
Step-by-step explanation:
X= -5 y=2 work out the VALUE if 3x + 4y
Answer:
I think the answer is -7
because : 3(-5) + 4(2)
-15 + 8
= -7
Netflix would like to estimate the proportion of their current subscribers who would pay extra for a premium membership including access to more movies and tv shows. To do this, they plan to calculate a 95% confidence interval to estimate the proportion. They would like a margin of error of. 5. How many subscribers must they sample to obtain this interval?.
The number of subscribers they must sample to obtain this interval is: b) 385.
How to find the sample?
95% confidence interval for z-score is 1.96
Using this formula to find the number of subscribers they must sample to obtain this interval
n≥ (zσ/2 ÷ 2ME)²
Where:
n= Sample
zσ = Z-score
ME = margin of error
Let plug in the formula
n≥ [1.96 / 2(0.05)]²
n≥ [1.96 / 0.1]²
= (19.6)²
= 384.16
=385 (Rounded)
Therefore the correct option is B.
The complete question is:
Netflix would like to estimate the proportion of their current subscribers who would pay extra for a premium membership including access to more movies and TV shows. To do this, they plan to calculate a 95% confidence interval to estimate the proportion. They would like a margin of error of .05. How many subscribers must they sample to obtain this interval?
a) 1537
b) 385
c) 192
d) 10
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what percentage of the variation in productivity is explained by the quadratic regression model?
Depends on the specific data and coefficients of the quadratic regression model used.
The coefficient of determination, denoted as R-squared (R2), is used to calculate the percentage of variation in productivity explained by the quadratic regression model. R-squared is a statistical measure that represents the proportion of the variance explained by an independent variable or variables in a regression model for a dependent variable.
R-squared is calculated by comparing the total sum of squares (TSS) and the residual sum of squares (RSS):
TSS = Σ(y - ȳ)^2
RSS = (y - - x - b*x2)2.
where y is the actual productivity value, is the mean of the productivity values, x is the independent variable, and b are the quadratic regression model coefficients.
R-squared can be calculated using the formula:
R2 = 1 minus (RSS/TSS)
We can then convert R-squared to a percentage to get the percentage of variation in productivity explained by the quadratic regression model.
As a result, the answer to this question is dependent on the specific data and quadratic regression model coefficients used.
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I NEED HELP PLEASEEEEE
The table shows the results of rolling a number cube 50 times. How does the experimental probability of rolling an even number compare with the theoretical probability?
The experimental probability of rolling an even number is __% which is a.close or b. not close to the theoretical probability of___% to get the experimental probability closer to the theoretical probability a. increase or b. decrease the number of trials.
i am the globglogabgalab The shwabble-dabble-wabble-gabble flibba blabba blab
Answer:
5 and 4
Step-by-step explanation:
please help me simplify this
Step-by-step explanation:
Given
sin(α+β) cos(α-β) +cos(α+β) sin(α -β)
We can see it is in the formula of
sin(A + B) = sinA cosB + cosA sinB
So now
Sin ( α + β + α - β)
= sin 2α
Or we can write sin2α as
= 2 sin α * cos α
Hope it will help :)❤
May 23, 8:49:32 PM
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In physics lab, Austin attaches a wireless sensor to one of the spokes of a bicycle
wheel spinning freely on its axle. The sensor's height above the ground, in
centimeters, is given by the function h(t) = 7.46 cos(2(t-0.25)) + 38.86,
where t is time measured in seconds.
What is the minimum and what does it represent in this
context?
The minimum is 29 cm and it represents the sensor's minimum height above the ground.
How to interpret the graph of a cosine function?In Mathematics and Geometry, the standard form of a cosine function can be represented or modeled by the following mathematical equation (formula):
y = Acos(Bx - C) + D
Where:
A represents the amplitude.B = 2π/P.P represents the period.C represents the phase shift.D represents the center line (midline).By critically observing the graph which models the sensor's height above the ground (in centimeters) shown in the image attached below, we can reasonably infer and logically deduce that it has a minimum height of 29 centimeters.
In conclusion, the sensor's minimum height above the ground cannot exceed 29 centimeters.
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
Passing through (2,-1) and (3, -3).
-2 is the slope if that's what's asked ?
Complete the statement. Round to the nearest hundredth if necessary.
6 lb =
oz
Answer: 96 oz
Step-by-step explanation: