Answers
Answer:
14.88m²
if you need the solution tell me
Related Questions
The density of water is 1 gram per cubic centimeter. An object floats in the water if its density is less than water's density, and it sinks if its density is great than water's.
Suppose a ball with mass 90 grams is in the shape of a sphere with radius 4 centimeters. Will the ball sink or float in the water?
ROUND YOUR ANSWERS TO THE NEAREST HUNDRETH AND USE THE π BUTTON WHEN CALCULATING.
Answers
The sphere ball will not sink because it has a density of 0.34 g/cm³ which is lesser than density of water
What is density?Density is the substance's mass per unit of volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume.
Density = mass/volume
volume of the sphere = 4/3 πr³
= 4/3 × 3.14 ×4³
= 803.84/3
= 267.95 cm³
Density of the sphere = 90/267.95
= 0.34 g/cm³( nearest hundredth)
Therefore the sphere will not sink because it's density is lesser than that of water.
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Assume that the recovery time for an individual from an infectious disease can be modeled as a normal distribution. (a) Calculate the time, d, in days for an individual to recover from being initially infected, with a 95% confidence level, assuming that the likelihood of recovering at any time is modeled as a normal distribution with a mean of 5 days and a standard deviation of 0.5 days. (b) Use the SIR model that you constructed previously. Assume that a city of 10 million people is confronted with a potential infectious epidemic. A ship arrives at the international airport carrying 100 individuals who are infected, but are unaware that they are infected. While contagious, infected individuals come into transmission contact with another individual once every 2 days. The recovery process is modeled using the Poisson process from Part (a). Assume that recovered individuals that survive develop immunity to the disease. Plot the fraction of susceptible individuals, infected individuals, and recovered individuals as a function of time throughout the epidemic. (c) What fraction of the total population will have ultimately come down with the infectious disease once the epidemic is over? How many days after the ship docking did this number finally reach steady state (i.e.,the epidemic is completely over). (d) What is the basis for this structured model (i.e.,scale, time, etc.)? What is/are the major assumptions associated with the structure?
Answers
Upper
daysThe(a) The time for an individual to recover from an infectious disease, is estimated to be between 4.02 and 5.98 days. (d) The structured SIR model assumes homogeneous mixing, constant population, recovered immunity.
(a) To calculate the time for an individual to recover with a 95% confidence level, we can use the properties of the normal distribution. The 95% confidence interval corresponds to approximately 1.96 standard deviations from the mean in both directions.
Given:
Mean (μ) = 5 days
Standard deviation (σ) = 0.5 days
The confidence interval can be calculated as follows:
Lower limit = Mean - (1.96 * Standard deviation)
Upper limit = Mean + (1.96 * Standard deviation)
Lower limit = 5 - (1.96 * 0.5)
= 5 - 0.98
= 4.02 days
Upper limit = 5 + (1.96 * 0.5)
= 5 + 0.98
= 5.98 days
Therefore, the time for an individual to recover from the infectious disease with a 95% confidence level is between approximately 4.02 and 5.98 days.
(b) To simulate the epidemic using the SIR model, we need additional information about the transmission rate and the duration of infectivity.
(c) Without the transmission rate and duration of infectivity, we cannot determine the fraction of the total population that will have come down with the infectious disease once the epidemic is over.
(d) The structured model in this case is the SIR (Susceptible-Infectious-Recovered) model, which is commonly used to study the dynamics of infectious diseases. The major assumptions associated with the SIR model include:
Homogeneous mixing: The model assumes that individuals in the population mix randomly, and each individual has an equal probability of coming into contact with any other individual.
Constant population: The model assumes a constant population size, without accounting for birth, death, or migration rates.
Recovered individuals develop immunity: The model assumes that individuals who recover from the infectious disease gain permanent immunity and cannot be reinfected.
No vaccination or intervention: The basic SIR model does not incorporate vaccination or other intervention measures.
These assumptions simplify the model and allow for mathematical analysis of disease spread dynamics. However, they may not fully capture the complexities of real-world scenarios, and more sophisticated models can be developed to address specific contexts and factors.
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in a test of the hypotheses, , the calculated p-value is 0.03. what is the decision at the 2% level of significance?
Answers
The term "content loaded in a test of the hypotheses" refers to the data and information used to perform the hypothesis test, which in this case resulted in a calculated p-value of 0.03.
Based on the information provided, the calculated p-value of 0.03 is less than the level of significance of 2%. This means that the null hypothesis can be rejected and the alternative hypothesis can be accepted.
Therefore, the decision is to reject the null hypothesis and conclude that there is sufficient evidence to support the alternative hypothesis.
The term "content loaded in a test of the hypotheses" refers to the data and information used to perform the hypothesis test, which in this case resulted in a calculated p-value of 0.03.
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In a circle, what is the ratio of the circumference to its diameter?
A area
B radius
C volume
D Pi
Answers
Answer:
the answer is D
Step-by-step explanation:
A car dealer offers a discount of 15% off the normal price of a car for cash.
Emma pays £6120 cash for a car.
Calculate the normal price of the car.
Answers
Answer:
7200
Step-by-step explanation:
100/(100-15) * 6120 = 7200
Given the function f(x,y) = 4xy^2 - x^2y^2 - xy^3 (a) Find and classify all the critical points (b) Find the absolute maximum and minimum values of f(x,y) on D, where D is the closed triangular region in the xy plane with vertices (0,0) (0,6) and (6,0) .
Answers
The absolute maximum value of f(x, y) on D is 0, and the absolute minimum value is -64.
(a) To find the critical points of the function f(x, y) = 4xy^2 - x^2y^2 - xy^3, we need to find the values of x and y where the partial derivatives with respect to x and y are equal to zero.
Taking the partial derivative with respect to x:
∂f/∂x = 4y^2 - 2xy^2 - y^3
Taking the partial derivative with respect to y:
∂f/∂y = 8xy - 2x^2y - 3xy^2
Setting both partial derivatives equal to zero and solving the resulting system of equations will give us the critical points.
4y^2 - 2xy^2 - y^3 = 0 ...(1)
8xy - 2x^2y - 3xy^2 = 0 ...(2)
From equation (1), we can factor out y^2:
y^2(4 - 2x - y) = 0
This gives us two possibilities: y = 0 or 4 - 2x - y = 0, which simplifies to y = 4 - 2x.
Substituting y = 0 into equation (2), we get:
8xy = 0
This implies that either x = 0 or y = 0.
So, we have three possible cases for the critical points:
Case 1: y = 0, which implies x = 0 from equation (2).
Case 2: x = 0, which implies y = 4 from the equation y = 4 - 2x.
Case 3: Solving the equations 4 - 2x - y = 0 and 8xy - 2x^2y - 3xy^2 = 0 simultaneously will give us additional critical points.
(b) To find the absolute maximum and minimum values of f(x, y) on the closed triangular region D, we need to evaluate the function at the vertices of the triangle and at the critical points found in part (a).
The vertices of the triangle D are (0, 0), (0, 6), and (6, 0).
Evaluate f(x, y) at the vertices:
f(0, 0) = 0
f(0, 6) = 0 - 0 - 0 = 0
f(6, 0) = 4(6)(0)^2 - (6)^2(0)^2 - (6)(0)^3 = 0
Evaluate f(x, y) at the critical points:
f(0, 0) = 0
f(0, 4) = 4(0)(4)^2 - (0)^2(4)^2 - (0)(4)^3 = -64
f(2, 2) = 4(2)(2)^2 - (2)^2(2)^2 - (2)(2)^3 = 8 - 8 - 16 = -16
Therefore, the absolute maximum value of f(x, y) on D is 0, and the absolute minimum value is -64.
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Which expression is equivalent to 9x + 4x ?
Answers
In a recent baseball season, Bob hit a home run approximately once every 18.38 plate appearances. Assume that this probability did not change going into the next season. What is the probability that Bob hits his first home run before his 25th plate appearance of the season
Answers
The probability that Bob hits his first home run before his 25th plate appearance of the season is 0.3511, which is approximately 35.11%.
The probability that Bob hits his first home run before his 25th plate appearance of the season, denoted as P, can be expressed mathematically as:
P = 1 - P(X ≥ 25)
where P(X ≥ 25) is the probability that Bob hits his first home run on or after his 25th plate appearance.
Given that
\(\[ P(X \geq 25) = \left(1 - p\right)^{25-1} \]\)
, where p = 1/18.38 = 0.0544, we can substitute the values:
\(\[ P = 1 - \left(1 - 0.0544\right)^{25-1} \]\)
Simplifying further:
P = 1 - 0.6489
Hence, the mathematical expression for the probability that Bob hits his first home run before his 25th plate appearance is:
P = 0.3511
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The probability that Bob hits his first home run before his 25th plate appearance of the season is \(1 - (1 - (1/18.38))^{24}\).
To find the probability that Bob hits his first home run before his 25th plate appearance of the season, we can use the concept of geometric probability. Geometric probability is used to calculate the probability of a specific event occurring within a sequence of independent trials.
In this case, Bob hitting a home run is the event we are interested in, and each plate appearance represents an independent trial. We are given that Bob hits a home run once every 18.38 plate appearances.
To calculate the probability, we need to find the complement of the event (the probability of not hitting a home run in the first 24 plate appearances) and subtract it from 1.
The probability of not hitting a home run in one plate appearance is 1 minus the probability of hitting a home run, which is 1 - (1/18.38).
To find the probability of not hitting a home run in the first 24 plate appearances, we raise this probability to the power of 24, since each plate appearance is an independent trial.
So, the probability of not hitting a home run in the first 24 plate appearances is ( \(1 - (1 - (1/18.38))^{24}\).
To find the probability of hitting the first home run before the 25th plate appearance, we subtract the probability of not hitting a home run in the first 24 plate appearances from 1.
Calculating this probability, we find that Bob has approximately a 49.2% chance of hitting his first home run before his 25th plate appearance of the season.
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Find the greatest common divisor of 6, 14, and 21, and write it in the form 6r 14s 21t, for appropriate r, s and t.
Answers
The greatest common divisor of 6, 14, and 21 is 1, and it can be written as 6(0) 14(0) 21(1).
To find the greatest common divisor (GCD) of 6, 14, and 21 and write it in the form 6r 14s 21t, we can use the Euclidean algorithm.
Step 1: Find the GCD of 6 and 14.
- Divide 14 by 6: 14 ÷ 6 = 2 remainder 2
- Replace 14 with 6 and 6 with 2: Now we have 6 and 2.
- Divide 6 by 2: 6 ÷ 2 = 3 remainder 0
- Since the remainder is 0, the GCD of 6 and 14 is 2.
Step 2: Find the GCD of the result from step 1 (2) and 21.
- Divide 21 by 2: 21 ÷ 2 = 10 remainder 1
- Replace 21 with 2 and 2 with 1: Now we have 2 and 1.
- Divide 2 by 1: 2 ÷ 1 = 2 remainder 0
- Since the remainder is 0, the GCD of 2 and 21 is 1.
Therefore, the GCD of 6, 14, and 21 is 1. In the given form 6r 14s 21t, r would be 0, s would be 0, and t would be 1.
So, the GCD of 6, 14, and 21 is 1, and it can be written as 6(0) 14(0) 21(1).
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what is the answer of typing at an average rate of 42 words per minute?
Answers
Answer:
Typing of 28 words in 2/3 of a minute.
Explanation:
If one can type and average rate of 42 words per minute, let's confirm how many words one can type in 2/3 and 3/2 of a minute;
\(\begin{gathered} 42words\Rightarrow1\text{minute} \\ x\Rightarrow\frac{2}{3}of\text{ a minute} \\ x=42\ast\frac{2}{3}=14\ast2=28\text{ words} \end{gathered}\)Therefore, 28 words can be typed in 2/3 of a minute.
Find the values of x, y, and z in the figure
Answers
The values of x, y, and z in a rectangle with area 24 cm² is 3.6 cm, 6.67 cm, and 14.2 cm, use the fact that the area of a rectangle is the product of its length and width and with the Pythagorean theorem
Area = x * y = 24
Next, we can use the Pythagorean Theorem to relate x, y, and z
z² = x² + y²
We can substitute the value of y from the first equation into the second equation
z² = x² + (24/x)²
Simplifying
z² = x² + 576/x²
We can solve for x by finding the value that makes the derivative of the right-hand side of this equation equal to zero
d/dx (x² + 576/x^2) = 2x - 1152/x³ = 0
Solving for x
2x = 1152/x³
x⁴ = 576
x = 3.6 cm
Now that we know x, we can find y from the first equation:
y = 24/x = 6.67 cm
Finally, we can use the Pythagorean Theorem to find z:
z² = x² + y² = 14.2 cm
Therefore, the values of x, y, and z are approximately 3.6 cm, 6.67 cm, and 14.2 cm, respectively.
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--The given question is incomplete, the complete question is given
" Find the values of x, y, and z in the figure "--
Which statement is true of an appropriate sample of a population? A sample must be a group of people who are the target of the survey question. A sample should have different characteristics than the population. O Asample must be very small. A sample should include only boys or only girls. THE ANSWER IS A
Answers
Answer:
The answer is A simple must be a group of people who are the target of the survey question
Step-by-step explanation:
Which equation best represents the relationship between x and y in the graph? A) y = - 3 4 x - 3 B) y = - 4 3 x - 3 C) y = - 3 4 x - 4 D) y = - 4 3 x - 4
Answers
=
14
,
⇒
the length of each leg
=
14
√
2
=
7
√
2
Check :
(
7
√
2
)
2
+
(
7
√
2
)
2
=
196
=
14
2
(OK)
Use the distributive property to multiply (2 w + 7)(2 w - 7).
Answers
Answer:
\(4w^{2} -49\)
Step-by-step explanation:
Expand (2w+7)(2w−7)
2w(2w-7)+7(2w-7)
2w(2w)+2w*-7+7(2w-7)
2w(2w)+2w*-7+7(2w)+7*-7
HELP PLEASEEEE With a weight of approximately 6.6 x 10^6 tons, Hoover Dam spans the Colorado River between Nevada and Arizona. What is its weight in pounds? (Express your result in scientific notation.)
Answers
Answer: I need the answer also
Step-by-step explanation:
A quarterback throws an incomplete pass. The height of the football at time t is modeled by the equation h(t) = –16t2 + 40t + 7. Rounded to the nearest tenth, the solutions to the equation when h(t) = 0 feet are –0.2 s and 2.7 s. Which solution can be eliminated and why?
The solution –0.2 s can be eliminated because time cannot be a negative value.
The solution –0.2 s can be eliminated because the pass was not thrown backward.
The solution 2.7 s can be eliminated because the pass was thrown backward.
The solution 2.7 s can be eliminated because a ball cannot be in the air for that long due to gravity.
Answers
The solution that will be eliminated when a quarterback throws an incomplete pass is –0.2 s can be eliminated because time cannot be a negative value
What is parabolic equation?This is the equation used to trace the path made by a parabola. It is another name for quadratic equation.
We can say that the football traced a parabolic path represented by the equation h(t) = –16t2 + 40t + 7.
Parabolic equation will always produce two solutions then depending on the applicability of the solution the best option will be picked.
In this case time, which cannot be a negative value hence option A is the correct answer
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It says Find out the value of x
Answers
34) 31
35) 21
Check the last one to make sure it’s right . The first 2 I’m 100% sure they are correct
Answer:
x=31, x=31, x=21.
Step-by-step explanation:
So for number 33, we see that 2x+28=90 degrees so you just simplify the equation to 2x=62, x=31.
For number 34, we see that 4x+56=180 (flat line), so we simplify the equation again and get 4x=124, x=31 degrees.
For number 35, according to the vertical angle theorem, 43=2x+1, so we simplify that too and we get 42=2x, 21=x, x=21.
A
1
-4
-3
-2
-1
0
00
-1
-2.
The distance AB rounded to the
nearest tenth = [?]
Hint: d = V(x2 – x1)2 + (y2 - yı)2
![A1-4-3-2-1000-1-2.The distance AB rounded to thenearest tenth = [?]Hint: d = V(x2 x1)2 + (y2 - y)2](https://i5t5.c14.e2-1.dev/c-qa-images/contents/attachments/4uSWhTV59PGeJxz2h8JAqwgjcIsail9a.png)
Answers
Answer:
2.8
Step-by-step explanation:
use the distance formula in the picture:
\(\sqrt{(-1-(-3))^2+((-1)-1)^2} = \sqrt{2^2+(-2)^2} = \sqrt{4+4} = \sqrt{8} = 2\sqrt{2} = 2.8284\)
Answer:
AB ≈ 2.8
Step-by-step explanation:
Calculate the distance d using the distance formula
d = \(\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }\)
with (x₁, y₁ ) = A (- 3, 1) and (x₂, y₂ ) = B (- 1, - 1)
d = \(\sqrt{(-1-(-3))^2+(-1-1)^2}\)
= \(\sqrt{(-1+3)^2+(-2)^2}\)
= \(\sqrt{2^2+4}\)
= \(\sqrt{4+4}\)
= \(\sqrt{8}\)
≈ 2.8 ( to the nearest tenth )
Rewrite
-30-(-24)+20-7
Answers
Answer:
Answer ; -41#Brainlyfast
Carry_On_learning
Answer:
7
Step-by-step explanation:
-30 - (-24) + 20 -7
-30 - (-24) = - 6
-6 + 20 -7 = 7
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need help or one of my answers are wrong dm me reseller#0001
Didn't understand
Rewrite it as what help me im lost?
8(3x-6)=6(4x+8) help please with step by step thanks
Answers
Answer:
Your answer is: No solution
Step-by-step explanation:
Hope this helped : )
Find the distance between 2-4i and 6+i
Answers
Answer:
22
Step-by-step explanation:
2-4i and i=6
2-4(6)
=22
Colin plans to order three types of skateboard parts. He plans to order a total of ten parts. He can order online from Tony's
Skateboard Shop.
Colin's online order from Tony's Skateboard Shop is shown in the order form below.
The subtotal amount is the total cost of all ten parts before any discount or tax. What is the "Subtotal amount for the ten parts
that Colin plans to order before the discount is applied?
Tony's Skateboard Shop Order Form
Type of Part
Truck
Wheel
Package of Bearings
Price per Unit Units Ordered Cost
$8.95
$6.95
$2.45
2
4
4
Subtotal
Online Discount -$2.00
Subtotal After Discount
Sales Tax (5% of the Subtotal After Discount)
Total Payment Due
Answers
The subtotal amount before any discount would be $55.5.
What is a discount?
A discount is a reduction in the price of a product or service. It can be expressed as a fixed amount or as a percentage of the original price. Discounts can be offered for a variety of reasons, such as to encourage customers to buy a product or service, to reward loyal customers, or to clear out inventory. Discounts can be offered to all customers or only to certain groups, such as students or senior citizens.
Type of part Price per unit Units ordered Cost
Truck $8.95 2 17.9
Wheel $6.95 4 27.8
Package of Bearings $2.45 4 9.8
Subtotal $55.5
Online discount -$2.00
Subtotal After Discount $53.5
Sales Tax
(5% of the Subtotal After Discount) $56.175
Total Payment Due $56.175
Hence, the subtotal amount before any discount would be $55.5.
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The number of observations in a complete data set having 10 elements and 5 variables is _____ ... a. data b. variables c. elements d. variables and elements.
Answers
The number of observations in a complete data set with 10 elements and 5 variables is a. data.
In the context of data analysis, a complete data set refers to a collection of data that includes all the required observations or cases. In this scenario, the data set consists of 10 elements, which represent the individual observations or data points. Each element is associated with 5 variables, which are the characteristics or attributes being measured or observed.
Therefore, the number of observations in this data set is determined by the number of elements, which is 10. The term "observations" refers to the individual data points or cases in the data set. The other options, such as "variables" and "elements," do not accurately represent the count of observations in this context.
Hence, the correct answer is a. data, indicating that the number of observations in the complete data set is determined by the number of elements, which in this case is 10
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is this answer correct?
(angel sums triangle)
Answers
Answer:
No, I got 18
Step-by-step explanation:
180-78=102
180-11-49=120
180-120=60
x=180-102-60=18
which expression is equivalent tofor all values of m , p , and v where the expression is defined? Which expression is equivalent to45m^-6p^2v^12/15m^-2p^8v^-4a) 3v^8/m^8p^6b.)3v^16/m^4p^6c. 30m^3/p^4v^3d. 30v^3/m^3p^4
Answers
The expression is equivalent to 45m^-6p^2v^12/15m^-2p^8v^-4 is Option b 3v^16/m^4p^6 .
Given :
expression is equivalent to for all values of m , p , and v where the expression is defined
= ( 45m^-6 ) * p^2 * v^12 / 15m^-2 * p^8 * v^-4
= ( 45 / 15 ) ( m^-6 / m^-2 ) ( p^2 / p^8 ) ( v^12 / v^-4 )
= 3 ( m^-6 - ( -2 ) ( p^2 - 8 ) ( v^12 - ( - 4 )
= 3 ( m^-6 + 2 ) ( p^-6 ) ( v^12 + 4 )
= 3 ( m^-4 ) ( p^-6 ) ( v^16)
= 3 * v^16 / m^4 * p^6
= 3v^16 / m^4p^6
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whats 34* 12 i have no idea I'm only 9
Answers
Multiply 1 & 2 from 3 and 4 respectively and add to get product.
- BRAINLIEST answerer
Answer:
\(408\)
Step-by-step explanation:
Hey there,
\(34 \\ \times 12 \\ ................. \\ \: \: \: \: \: \: \: 6 8 \\ + 34 0 \\ ............. ... \\ = 40 8\)
Hope this helps you.
Let me know if you have any other questions:-):-)
g a simple undirected graph has 10 edges. 2 of the vertices are of degree 4, and the rest of the vertices are of degree 3. how many vertices are in this graph?
Answers
Therefore, there are 4 vertices in this graph.
Let V be the number of vertices in the graph. The sum of the degrees of all vertices in an undirected graph is twice the number of edges, so in this case, the sum of degrees is 2 * 10 = 20.
We know that two vertices have degree 4, so the degrees of the remaining vertices must add up to 20 - 2 * 4 = 12.
If there are v vertices of degree 3, then the total degree contributed by those vertices is 3v, so we have:
3v + 2 * 4 = 20
3v = 12
v = 4
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I need help ASAP ???
Answers
The following system of linear equations is shown in the graph.
y=1/4x+5
x-4y=4
How many solutions does the system of linear equations have?
A. No solution
B. Infinitely many solutions
C. One solution at (4,0)
D. One solution at (0,-1)
Answers
Answer:
Step-by-step explanation:
The slopes of both those lines are the same so there is no solution. Use slope triangles to find out the slope. They are both 1/4.
A. No solution
y = 1/4x+5
x - 4y = 4
You can simplify the second equation into y = 1/4x - 1
Since these equations both have the same slope, they are parallel. When two lines are parallel, they have no solutions.
A high school choir is holding a fundraiser for its spring contest trip. the amount each student needs to raise varies as the number of students who participate in the fundraiser. if 50 students participate in the fundraiser, each student needs to raise $275. use this information to complete the statements.
Answers
If 100 students participate in the fundraiser, each student needs to raise $137.50.If 25 students participate in the fundraiser, each student needs to raise amount $550.
Amount = (Total Amount Needed) ÷ (Number of Students)
For 60 students:
Amount = $275 ÷ 60 = $4.58
For 75 students:
Amount = $275 ÷ 75 = $3.67
For 40 students:
Amount = $275 ÷ 40 = $6.88
To solve this problem, we need to use a simple equation: Amount = (Total Amount Needed) ÷ (Number of Students). We can then plug in the given information to calculate the amount each student needs to raise. For example, if 50 students participate in the fundraiser, we can calculate that each student needs to raise $275 ÷ 50 = $5.50. We can then use this equation to calculate the amount that each student needs to raise if there are different numbers of students participating in the fundraiser. For example, if there are 100 students participating in the fundraiser, each student needs to raise $275 ÷ 100 = $2.75. Similarly, if there are 25 students participating in the fundraiser, each student needs to raise $275 ÷ 25 = $11.00.
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