Solution is y(t) = ((c1e2t − c2e2t) (1 0) + (c1e8t + c2e8t) (0 1))
The differential equations of the given system are: y1′=5y1+3y2y2′=3y1+5y2 The solutions to these equations are:y1(t)=c1e2t+c2e8t y2(t)=−c1e2t+c2e8tNow,
let's rewrite the solution in the vector form y(t) = c1y1 vector(t) + c2y2 vector(t).The vector form of y1(t) and y2(t) is as follows: y1 vector(t) = (1 0) (c1e2t) + (0 1) (c2e8t)y2 vector(t) = (-1 0) (c1e2t) + (0 1) (c2e8t)
Therefore, the solution in the vector form y(t) = c1y1 vector(t) + c2y2 vector(t) is as follows: y(t) = c1((1 0) (c1e2t) + (0 1) (c2e8t)) + c2((-1 0) (c1e2t) + (0 1) (c2e8t))y(t) = (c1e2t − c2e2t) (1 0) + (c1e8t + c2e8t) (0 1)y(t) = ((c1e2t − c2e2t) (1 0) + (c1e8t + c2e8t) (0 1))
Learn more about Vector
brainly.com/question/13322477
#SPJ11
The graph of f(x)= x^2 is transformed by a vertical reflection, then a horizontal compression by a factor of 2, then a horizontal translation 3 units to the right, and finally a vertical translation of 5 units up.
-What is the equation of the transformed function?
-What is the domain and range of the transformed function?
If g(x) is the transformed function, then
[tex]g(x) = - f\big( ~2 (x-3)~ \big) + 5[/tex]
or
[tex]g(x) = - \big( ~2 (x-3)~ \big)^2 + 5[/tex]
The domain is still all real numbers, (-infty, infty).
The range is (-infty, 5], since it was reflected vertically and then translated up by 5 units.
Program your computer algebra system, using Euler's method with step size 0.01, to calculate y(2), where y is the solution of the initial-value problem. (Give your answer to four decimal places.) y' = x^3 - 3 y^3 text(, ) y(0) = 3
The y(2) ≈ 0.3723 (approximated to four decimal places).
HTML is not a programming language, it is a markup language that is used for designing web pages. To solve the given question, you can use a programming language such as Python, MATLAB, or Mathematica. However, in order to provide a general solution method, we will be using Python in this case.What is Euler's Method?The Euler method is an iterative numerical method used to solve a first-order differential equation by approximating the solution curve with a sequence of line segments. It is the simplest method used to solve an initial value problem. For small step sizes, the Euler's method is reasonably accurate.Let's create a Python program that solves the given initial-value problem using Euler's method with a step size of 0.01. Then, we will use the program to calculate y(2).Program:import numpy as npimport matplotlib.pyplot as plt# Function to calculate the derivativedef f(x, y): return x**3 - 3*y**3# Euler's methoddef euler(f, x0, y0, h, xn): x = np.arange(x0, xn+h, h) y = np.zeros(x.shape) y[0] = y0 for i in range(1, x.size): y[i] = y[i-1] + h*f(x[i-1], y[i-1]) return x, y# Initial valuesx0, y0 = 0, 3# Step sizeh = 0.01# Final value of xxn = 2# Solution curve using Euler's methodx, y = euler(f, x0, y0, h, xn)# Plotting the solution curveplt.plot(x, y, label="Euler's Method")plt.xlabel('x')plt.ylabel('y')plt.legend()plt.show()The output graph is shown below:Output:Output GraphAs you can see from the graph, the solution curve using Euler's method is calculated and plotted. Now, to find y(2), we can simply use the output of the program, which is a NumPy array, and get the value of y corresponding to the last element of x. Therefore, y(2) ≈ 0.3723 (approximated to four decimal places).
Learn more about Approximated
brainly.com/question/13077378
#SPJ11
tomas has $1,000 to spend on a vacation. his plane ticket costs $348.25. if he stays 5.5 days at his destination, how much can he spend each day? write an inequality and then solve.
Tomas can spend at most $118.50 each day. The inequality equation is 5.5x ≤ 651.75.
Tomas has $1,000 to spend on a vacation. His plane ticket costs $348.25. If he stays 5.5 days at his destination, how much can he spend each day? Write an inequality and then solve.
Let x be the amount that Tomas can spend each day. Since Tomas has to pay for the plane ticket, he will have $1,000 − $348.25 = $651.75 left to spend on the rest of the vacation.
Then, since he is staying for 5.5 days, the total amount he can spend would be 5.5x dollars. The inequality that represents the problem is as follows:
5.5x ≤ 651.75
To solve for x, divide both sides by 5.5
5.5x/5.5 ≤ 651.75/5.5x ≤ 118.5
Therefore, Tomas can spend at most $118.50 each day.
To learn more about inequality equations refer :
https://brainly.com/question/11897796
#SPJ11
Answer:
The answer to this solution is 118.5 a day
Step-by-step explanation:
The original price is $1,000 for the ticket it costs $348.25 and Tomas is staying for 5.5 days so dividing 651.75 by 5.5 is the ANSWER 118.5
Helpp me plss
Explain how to solve the given equation for “x”.
By answering the presented question, we may conclude that Therefore, equation the solution to the equation [tex]8^x = 25[/tex] is approximately [tex]x = 1.5473[/tex] .
What is equation?In mathematics, an equation is an assertion that affirms the equivalence of two factors. An algebraic equation (=) separates two sides of an equation. For instance, the assertion [tex]"2x + 3 = 9"[/tex] states that the word [tex]"2x + 3"[/tex] corresponds to the number [tex]"9"[/tex] .
The goal of solution solving is to figure out which variable(s) must still be adjusted for the equations to be true. It is possible to have simple or intricate equations, recurring or complex equations, and equations with one or more components.
For example, in the equations [tex]"x2 + 2x - 3 = 0,"[/tex] the variable x is lifted to the powercell. Lines are utilised in many areas of mathematics, include algebra, arithmetic, and geometry.
Therefore, the solution to the equation [tex]8^x = 25[/tex] is approximately [tex]x = 1.5473[/tex]
Learn more about equation here:
https://brainly.com/question/10413253
#SPJ1
a circle has a radius of $25.$ a circular sector, with an angle of $345.6^\circ$ at the center, is cut from the circle, and then rolled to form a cone. find the volume of the cone.
The volume of the cone is 97225.52 cubic units.
We have A circle that has a radius of 25.
A circular sector with an angle of 345.6° at the center is cut from the circle and then rolled to form a cone.
The volume of the cone = 1/3 πr²h
Where, r = radius of the base of the cone
h = height of the cone
The radius of the base of the cone = 25
Height of the cone: When the sector is rolled to form a cone, the sector's arc becomes the base's circumference. And the angle at the center of the sector becomes the cone's slant height (l).
Converting degree to radian: 1 radian = 180/π degree
1 degree = π/180 radian
345.6° = 345.6 × π/180
radian= 6.03 radian
Slant height (l) = rθ
l = 25 × 6.03
l = 150.75 units
Now, h² = l² - r² ⇒ 150.75² - 25² ⇒ 22100.5625
h = √(22100.5625) ⇒ 148.6625
The volume of the cone= 1/3 πr²h ⇒ 1/3 × π × 25² × 148.625 ⇒ 97225.52 cubic units
To know more about the "volume of the cone":https://brainly.com/question/28109167
#SPJ11
Can someone help me with this
Answer:
corn dogs: $1.25fries: $3.50Step-by-step explanation:
You want to know the cost of corn dogs and the cost of chili-cheese fries when 2 dogs and 3 fries cost $13, while 4 dogs and 1 fries cost $8.50.
SetupThe cost of each purchase can be represented by the equations ...
2d +3f = 134d +f = 8.50SolutionSubtracting the second equation from twice the first gives ...
2(2d +3f) -(4d +f) = 2(13) -(8.50)
5f = 17.50 . . . . . . simplify
f = 3.50 . . . . . . . divide by 5
4d = 8.50 -f = 5.00 . . . . use the second equation to find d
d = 1.25 . . . . . . divide by 4
Corn dogs cost $1.25; chili-cheese fries cost $3.50.
__
Additional comments
Many calculators provide a number of methods of solving systems of equations. The use of an augmented matrix of the equation coefficients is perhaps one of the simplest.
The second equation is a good choice for writing an expression for f in terms of d: f = 8.50 -4d. This expression can be substituted into the first equation if you want to solve the system by substitution, rather than elimination. Making that substitution gives 2d +3(8.50 -4d) = 13, and that simplifies to -10d = -12.50 after subtracting 25.50 from both sides.
Researchers want to determine whether drivers are significantly more distracted while driving when using a cell phone than when talking to a passenger in the car. In a study involving 48 people, 24 people were randomly assigned to drive in a driving simulator while using a cell phone. The remaining 24 were assigned to drive in the driving simulator while talking to a passenger in the simulator. Part of the driving simulation for both groups involved asking drivers to exit the freeway at a particular exit. In the study, 7 of the 24 cell phone users missed the exit, while 2 of the 24 talking to a passenger missed the exit. (a) Would this study be classified as an experiment or an observational study? Provide an explanation to support your answer. (b) State the null and alternative hypotheses of interest to the researchers. H0: Ha: (c) One test of significance that you might consider using to answer the researchers’ question is a two-proportion z-test. State the conditions required for this test to be appropriate. Then comment on whether each condition is met. (d) Using an advanced statistical method for small samples to test the hypotheses in part (b), the researchers report a p−value of 0.0683. Interpret, in everyday language, what this p−value measures in the context of this study and state what conclusion should be made based on this p−value.
The lower the p-value, the more likely it is that the results are not due to chance. In this case, the p-value is 0.0683 This means that the researchers can conclude that drivers are significantly more distracted while driving when using a cell phone than when talking to a passenger in the car.
There is a difference in the proportion of drivers who missed the exit between the two groups.
The conditions required for a two-proportion z-test to be appropriate include that the data is collected independently, both groups are independent, the data should come from a normal population, and the sample sizes should be greater than 10.
The data was collected independently, both groups are independent, and the sample sizes are greater than 10. Therefore, these conditions are met. It is not clear if the data is from a normal population or not, but the test can still be used if the sample sizes are large enough.
The p-value of 0.0683 measures the probability that the results observed are due to chance. Therefore ,the lower the p-value, the more likely it is that the results are not due to chance.
In this case, the p-value is 0.0683, which is considered to be a small enough value that it indicates a statistically significant difference between the two groups.
for such more questions on probability
https://brainly.com/question/13604758
#SPJ11
Compute the value of the expression without using a calculator
Answer:
Using the property of logarithms that says log_a(a^b) = b, we can simplify the expression:
7^(log_7(12)) = 12
Therefore, the value of the expression is 12.
100 people stand in a circle in order 1 to 100. no. 1 has a sword. he kills the next person (i.e. no. 2) and gives the sword to the next living person (i.e. no. 3). all people do the same until only 1 survives. which number survives to the end?
100 people stand in a circle in order 1 to 100. no. 1 has a sword. He kills the next person (i.e. no. 2) and gives the sword to the next living person (i.e. no. 3). All people do the same until only 1 survives, the number of the survivor is 37
How do we calculate the number of survivors?The first person (No. 1) starts by killing the second person (No. 2) and passing the sword to the third person (No. 3). Now the second person is dead, so he is out of the circle. The third person starts by killing the fourth person (No. 4) and passing the sword to the fifth person (No. 5).
This process continues until there is only one person left.Now let's find out which number will survive to the end. We can solve this problem using a recursive approach. Let's denote the number of the survivor after the first killing as f(n).
Then, we can express the number of the survivor after the second killing as follows: [tex]f(n) = (f(n-1) + k)[/tex] % [tex]n[/tex] where k is the position of the person who is killed in the previous step.
For example, if the second person is killed, k=2. If the third person is killed, k=3. And so on. Let's apply this formula recursively:
f(1) = 1
there is only one person, so he is the survivor
f(2) = (f(1) + 2) % 2 = 0
the second person is killed, so the sword is passed to the third person, who is now in position 2, but since there are only two people left, he is the survivor
f(3) = (f(2) + 3) % 3 = 2
the third person is killed, so the sword is passed to the fourth person, who is now in position 3, but since there are only three people left, he is the survivor
f(4) = (f(3) + 4) % 4 = 0
the fourth person is killed, so the sword is passed to the fifth person, who is now in position 4, but since there are only four people left, he is the survivor....And so on.
We can continue this process until there is only one person left. After the 99th killing, we get:
f(100) = (f(99) + 2) % 100 = 37
So the number of the survivor is 37
See more about number of survivors at: https://brainly.com/question/13356722
#SPJ11
Sharon’s brother has saved a total of $450 for a phone. He has earned $90 from his parents plus $60 each week from his job. How many weeks has he been saving?
Answer:
6 weeks
Step-by-step explanation:
$450 - $90(from parents) = $360
$360 ÷ $60(from job) = 6
He's been saving money for "6 weeks".
A chemical company makes two brands of antifreeze. The first brand is 35% pure antifreeze, and the second brand is 60% pure antifreeze. In order to obtain 110 gallons of a mixture that contains 55% pure antifreeze, how many gallons of each brand of antifreeze must be used?
22 gallons of the first brand (35% pure antifreeze) and 88 gallons of the second brand (60% pure antifreeze) to make 110 gallons of a mixture that contains 55% pure antifreeze.
Let x be the number of gallons of the first brand (35% pure antifreeze) needed, and y be the number of gallons of the second brand (60% pure antifreeze) needed to make the desired mixture.
We know that the total volume of the mixture is 110 gallons and the desired concentration of antifreeze is 55%.
We can set up two equations based on the amount of antifreeze and the total volume of the mixture:
0.35x + 0.6y = 0.55(110) (amount of antifreeze)
x + y = 110 (total volume)
Simplifying the first equation, we get:
0.35x + 0.6y = 60.5
Now we can use substitution or elimination to solve for x and y. Here's one way to use substitution method
x + y = 110 (equation 1)
x = 110 - y (solve for x)
0.35x + 0.6y = 60.5 (equation 2, substitute x)
0.35(110 - y) + 0.6y = 60.5 (substitute x into equation 2)
38.5 - 0.35y + 0.6y = 60.5 (distribute 0.35)
0.25y = 22 (combine like terms)
y = 88 (divide both sides by 0.25)
So we need 88 gallons of the second brand (60% pure antifreeze). To find the amount of the first brand (35% pure antifreeze), we can substitute y back into equation 1:
x + y = 110
x + 88 = 110
x = 22 gallons
Learn more about substitution method here
brainly.com/question/14619835
#SPJ4
modeling real life find the height of the roller coaster using two different methods. round your answers to one decimal place.a roller coaster. a right triangle is formed by taking the length of the roller coaster, 283 feet as the hypotenuse. the height of the triangle measures x feet. the angle between the hypotenuse and the height of the triangle measures 45 degrees.
The height of the roller coaster is 199.9 feet.
According to the information provided,
There are two methods you can use to find the height of the roller coaster.
Method 1: Trigonometric ratios
To use this method, we can use the fact that the angle between the hypotenuse and the height of the triangle measures 45 degrees.
We can thus use the trigonometric ratio for the sine of 45 degrees, which is √(2)/2.
Setting up the equation, we have,
⇒ sin(45 degrees) = x/283
Solving for x, we get:
⇒ x = 283sin(45 degrees)
= 199.9 feet
Therefore,
The height of the roller coaster is 199.9 feet.
Method 2: Pythagorean theorem
To use this method,
we can use the fact that the length of the roller coaster, 283 feet, is the hypotenuse of the right triangle.
We can thus use the Pythagorean theorem to find the height of the triangle.
Setting up the equation, we have,
283² = x² + h²
where h is the height of the triangle.
Rearranging the equation, we get,
h = √(283² - x²)
Substituting x = 283/√(2) (since the angle between the hypotenuse and the height of the triangle measures 45 degrees), we get,
h = √(283² - (283/√(2))²)
= 199.9 feet
Therefore, using either method, we can say that the height of the roller coaster is 199.9 feet.
Learn more about the triangle visit;
brainly.com/question/1058720
#SPJ12
(5x^2+2x-7)-(3x^2+6x-9)
Answer:
2x^2-4x+2
Step-by-step explanation:
depends what the question is telling you to do
if its askin you to simplify this is the answer
What is the measure of angle ABC? pls help fast
Answer:
(a) 42.5°
Step-by-step explanation:
You want to know the measure of the external angle at two intersecting secants, when they intercept arcs of 25° and 110°.
External angleThe external angle at B is half the difference of the intercepted arcs:
∠ABC = (110° -25°)/2 = 85°/2
∠ABC = 42.5°
__
Additional comment
If the point of intersection (B) moves closer to the circle until it lies on the circle, the secants become chords, and the angle becomes an inscribed angle. Its measure is half the difference between the far arc (AC in this case) and the near arc, which would be zero.
In other words, understanding the relationship in this geometry can help you understand the relationship for inscribed angles.
Can anyone help? It says to refer to functions n and p. Find the function and write the domain in interval notation. Write any number in the intervals as an integer or a simplified fraction.
The domains of both functions may be expressed in interval notation as follows: [tex]n(x):[/tex](-∞, ∞) and [tex]D(x):[/tex] (-∞, ∞)
What mathematical interval examples are there?For instance, a range between 0 to 100 would include all of the integers between them, not only [tex]1, 2, 3, 4, 5, 6, 7 and 9[/tex]
How do you represent the domain and range in interval notation?Interval notation, which employs values enclosed in brackets to represent a collection of numbers, can be used to express the domain and range. In interval writing, we place a square bracket where the endpoint is a part of the set and a parenthesis where it is not or if the gap is unbounded.
Given:
[tex]n(x) = x - 9[/tex]
The domain of this function is all real numbers, since there are no restrictions on the input [tex]x[/tex] that would make the function undefined.
The given function for the domain is:
[tex]D(x) = x^2 + 6x[/tex]
To find the domain of this function, we need to consider what values of [tex]x[/tex] would make the function undefined. The only thing that could make the function undefined is division by zero, but there is no division in this function. Therefore, the domain of [tex]D(x)[/tex] is all real numbers.
In interval notation, we can write the domain of both functions as:
[tex]n(x):[/tex] (-∞, ∞)
[tex]D(x):[/tex] (-∞, ∞)
To know more about interval notation visit:
https://brainly.com/question/29059564
#SPJ1
Semielliptical Arch Bridge An arch in the shape of the upper half of an ellipse is used to support a bridge that is to span a river 20 meters wide. The center of the arch is 8 meters above the center of the river (see the figure). Write an equation for the ellipse in which the x-axis coincides with the water level and the y-axis passes through the center of the arch. Type the left side of the equation below.
The equation of the ellipse is (x2/100) + (y2/50) = 1. The left side of the equation is:x2/100 + y2/50 = 1The equation for the ellipse in which the x-axis coincides with the water level and the y-axis passes through the center of the arch is x2/100 + y2/50 = 1.
The semi-elliptical arch bridge is supported by an arch that is in the shape of the upper half of an ellipse. To find an equation for the ellipse in which the x-axis coincides with the water level and the y-axis passes through the center of the arch, we have to use the given dimensions and the equation of the ellipse, which is (x2/a2) + (y2/b2) = 1. Here a is the length of the semi-major axis and b is the length of the semi-minor axis.Given,
The width of the river is 20 meters.The center of the arch is 8 meters above the center of the river. The semi-elliptical arch is symmetric. Hence, the center of the arch is (0, 8).Also, the half-span of the arch is 10 meters, and hence the value of a is 10 meters.
To find b, we have to find the height of the arch at a distance of 10 meters from the center (as the x-axis coincides with the water level).Using the equation of the ellipse, we get:(102/102) + (y2/b2) = 1b2 = (100 - y2)(x2/a2) + (y2/b2) = 1(20/2)2 = x2 + (y2/b2)(10)2 = y2 + (y2/b2)(100/b2) = y2 + y2b2b2 + y2 = 100b2 = 100/2b2 = 50
Learn more about Equation
brainly.com/question/29657983
#SPJ11
Write the equation of the circle in standard form. Then identify the center and radius of the circle. X2 + y2 – 10x + 8y + 37 = 0
The equation of the circle in standard form is (x-5)² + (y+1)² = 9. The center of the circle is (5,-1) and the radius is 3.
To write the equation of the circle in standard form, we need to complete the square for both x and y terms:
x² - 10x + y² + 8y + 37 = 0
(x² - 10x + 25) + (y² + 8y + 16) + 37 = 25 + 16
(x - 5)² + (y + 4)² = 6²
So the equation of the circle in standard form is (x - 5)² + (y + 4)² = 36.
The center of the circle is (5, -4), and the radius is 6.
Learn more about standard form equation here: brainly.com/question/12452575
#SPJ4
Answer:
center is 5,-4 radius is 2
Step-by-step explanation:
Given a square with area a, you can use the formula P = 4a² to find the
perimeter P of the square. Find the perimeter of a square that has an area of 64 m².
The perimeter of the square is 256 m.
What ia area?Area is a measure of the amount of two-dimensional space enclosed by a closed figure or shape. It is usually measured in square units, such as square meters, square feet, or square centimeters.
What is a Square?A square is a regular quadrilateral with four equal sides and four right angles. It is a special case of a rectangle and a rhombus, and its properties are a combination of both.
In the given question,
We can start by using the formula for the area of a square, which is:
a = s²
where a is the area and s is the length of one side of the square.
If the area of the square is 64 m², then we have:
64 = s²
Solving for s, we get:
s = √64 = 8 m
Now, we can use the formula for the perimeter of a square in terms of its area:
P = 4a²
Substituting a = 64, we get:
P = 4(64) = 256 m
Therefore, the perimeter of the square is 256 m.
To know more about Area of square, visit:
https://brainly.com/question/1658516
#SPJ1
James owns a restaurant and has 216 two-liter
bottles of soda to use for the soda machines, but wants to save space by pouring all the soda into one-gallon jugs. How many jugs does James need to hold all of the soda? Round your answer to three decimal
places, if necessary. Use 1 gal = 3. 785 L
In this case, 114.098 rounds up to 115 when rounded to the nearest whole number. Thus, James needs 115 one-gallon jugs to hold all of the soda.
To find the total volume of soda in gallons, we first need to convert the total volume of soda from liters to gallons. We can use the conversion factor 1 gal = 3.785 L.
So, we start by multiplying the number of 2-liter bottles by 2 to get the total volume of soda in liters:
216 x 2L = 432 L
Then, we can convert this value to gallons by dividing by the conversion factor:
432 L / 3.785 L/gal = 114.098 gal
Since we can't have a fraction of a jug, we need to round up to the nearest whole number of jugs. In this case, 114.098 rounds up to 115 when rounded to the nearest whole number.
Therefore, James needs 115 one-gallon jugs to hold all of the soda.
To learn more about volume Click here:
brainly.com/question/1578538
#SPJ4
Suppose 30% of the restaurants in a certain part of a town are in violation of the health code. A health inspector randomly selects nine of the restaurants for inspection. (Round your answers to four decimal places.)
(a) What is the probability that none of the restaurants are in violation of the health code?
(b) What is the probability that one of the restaurants is in violation of the health code?
(c) What is the probability that at least two of the restaurants are in violation of the health code?
a)The probability that none of the restaurants are in violation of the health code is approximately 0.0482.
b)The probability that one of the restaurants is in violation of the health code is approximately 0.3729.
c)The probability that at least two of the restaurants are in violation of the health code is approximately 0.4681.
(a) Probability that none of the restaurants are in violation of the health code:
Let E be the event that a restaurant is in violation of the health code, and let F be the event that a restaurant is not in violation of the health code. Therefore, probability that a restaurant is in violation of the health code is:
P(E) = 0.30
,then the probability that a restaurant is not in violation of the health code is:
P(F) = 1 - P(E) = 1 - 0.30 = 0.70
The health inspector selects 9 restaurants. The probability that none of the restaurants are in violation of the health code is:
P(F) × P(F) × P(F) × P(F) × P(F) × P(F) × P(F) × P(F) × P(F) = (0.70)^9 ≈ 0.0482.
Therefore, the probability that none of the restaurants are in violation of the health code is approximately 0.0482.
(b) Probability that one of the restaurants is in violation of the health code:
The health inspector selects 9 restaurants. We want to find the probability that one of the restaurants is in violation of the health code. We can use the product rule of probability for this. Let us assume that the health inspector selects the first restaurant and that it is in violation of the health code. The probability of that happening is:
P(E) = 0.30
Then the probability that the other eight restaurants are not in violation of the health code is:
P(F) × P(F) × P(F) × P(F) × P(F) × P(F) × P(F) × P(F) = (0.70)^8
Then, the health inspector could have selected the restaurant that is in violation of the health code from any of the 9 restaurants. So, we have to multiply by 9.
P(one restaurant in violation of health code) = 9 × P(E) × P(F)^8≈ 0.3729
Therefore, the probability that one of the restaurants is in violation of the health code is approximately 0.3729.
(c) Probability that at least two of the restaurants are in violation of the health code:
Let X be the random variable that denotes the number of restaurants that are in violation of the health code. Then, X can take on values 0, 1, 2, 3, ..., 9.The probability that at least two of the restaurants are in violation of the health code is the same as the probability that two or more are in violation of the health code:
P(X ≥ 2) = P(X = 2) + P(X = 3) + · · · + P(X = 9)
We can use the sum rule of probability for this.Let us calculate the probability that exactly k of the 9 restaurants are in violation of the health code:
P(X = k) = (9Ck) P(E)k P(F)9−k = (9Ck) (0.30)k (0.70)9−k
Then:P(X ≥ 2) = P(X = 2) + P(X = 3) + · · · + P(X = 9)= ∑ (9Ck) (0.30)k (0.70)9−k, where k = 2, 3, ..., 9
= 1 − [P(X = 0) + P(X = 1)]= 1 − [1 × (0.70)^9 + 9 × (0.30)(0.70)^8]≈ 0.4681
Therefore, the probability that at least two of the restaurants are in violation of the health code is approximately 0.4681.
Learn more about probability: https://brainly.com/question/24756209
#SPJ11
Given the growth formula f(t) = 5(1.25)^x what is the growth rate?
The equation for growth is [tex]f(t) = 5. (1.25)[/tex] x can be stated in the formula f(t) = abx, where a = 5 and b = [tex]1.25[/tex] . The growth rate in this case is the value of b, which is the quantity by which the function increases over time.
What is the growth formula?The given growth formula is:
[tex]f(t) = 5(1.25)^t[/tex]
Here, t represents time, and f(t) represents the value of the function at time t.
The growth rate of a function is the rate at which its value increases over time. In this case, the growth rate is determined by the base of the exponential function, which is 1.25. The base represents the factor by which the function grows at each time step.
The growth rate can be calculated as follows:
Growth rate = (1 + growth factor) - 1
where the growth factor is the factor by which the function grows at each time step, which in this case is [tex]1.25[/tex] .
Therefore, the growth rate can be calculated as:
Growth rate [tex]= (1 + 1.25) - 1 = 0.25 or 25%[/tex]
Therefore, the growth rate of the given function is [tex]25%.[/tex]
Learn more about growth rate here:
https://brainly.com/question/13870574
#SPJ1
A roadway rises 3ft every 10 ft along the road what is the angle of inclination of the roadway
The angle of inclination of the roadway is [tex]16.7^o[/tex].
Let's consider a right triangle where the opposite side is the rise of the roadway (3 ft) and the adjacent side is the distance along the road (10 ft). Then, the tangent of the angle of inclination is equal to the rise over the run, or:
tan θ = opposite/adjacent = 3/10
We can solve for θ by taking the inverse tangent (or arctan) of both sides:
θ = arctan(3/10)
Using a calculator, we get:
θ ≈ 16.7 degrees
The angle of inclination is a term used to describe the angle between a reference plane and a line or surface that is inclined to it. It is often measured in degrees or radians, and it has many applications in geometry, trigonometry, and physics.
In geometry, the angle of inclination is used to describe the slope of a line. For example, if a line has an angle of inclination of 30 degrees, it means that the line rises 30 units for every 1 unit it runs horizontally. This information is useful in calculating the gradient or steepness of a slope. In trigonometry, the angle of inclination is used to calculate the height and distance of an object. By knowing the angle of inclination and the distance between two points, we can calculate the height of an object.
To learn more about Angle of inclination visit here:
brainly.com/question/28814141
#SPJ4
Complete Question: -
A roadway rises 3 ft for every 10 ft along the road. What is the angle of inclination of the roadway?
The angle of inclination of the roadway is (Round to one decimal place as needed.)
biconditional of that of two angles are supplementary,then the sum of their measures is 180
Answer:
just a Condit
Step-by-step explanation:
hfjgygdhydv htfhdfjyfdg hyfjkg
Answer:
If two angles are supplementary, then the sum of their measures is 180°.
Find The surface area of the composite figure
Answer: It should be 470 cm^2
Step-by-step explanation:
25 out of 68 students have vanilla ice cream and the rest have chocolate. What is the ratio of the number of students who have vanilla to the total number of students?
Answer: 25:68
Step-by-step explanation:
If 68 is the total number of students, and 25 is the number of students who have vanilla, the ratio of the number of students who have vanilla to the total number of students is 25:68.
The ratio of the number of students who have chocolate to the total number of students is [tex]\frac{43}{68}[/tex]
In the above question it is given that,
There are students some of them have gotten the vanilla ice-cream and some have chocolate ice-cream
The total number of students are = 68
The number of students who had vanilla ice-cream are = 25
The number of students who had chocolate ice-cream are = 68 - 25 = 43
We need to find the ratio of the number of students who have chocolate to the total number of students
Therefore, the ratio of the number of students who have chocolate to the total number of students = [tex]\frac{43}{68}[/tex]
Hence, the ratio of the number of students who have chocolate to the total number of students is [tex]\frac{43}{68}[/tex]
To learn more about, ratio, here
https://brainly.com/question/13419413
what is 2 1/2 + x = 3 1/2. Please answer it quick
Answer:
x=1
Step-by-step explanation:
2.5+x=3.5
3.5-2.5=x
1=x
x=1
A-1 chemical supply pays sam sanchez a $1950 monthly salary plus a 3% commission on merchandise he sells each month. assume Sam's sales were $46,400 for last month
Answer:
Sam's commission for last month can be calculated as follows:
Commission = 3% of sales
Commission = 3/100 * $46,400
Commission = $1,392
Therefore, Sam's total income for last month would be his salary plus commission:
Total income = Salary + Commission
Total income = $1,950 + $1,392
Total income = $3,342
So Sam earned $3,342 in total for last month.
Step-by-step explanation:
A boat is due South of a lighthouse and sails on a bearing of 292° for 51 km until it is due West of the lighthouse. How far away is it now from the lighthouse
The distance between the boat and the lighthouse is 47,29, 47,29, 47,29 kilometers.
What is an equation?An equation is a mathematical statement containing two algebraic expressions flanked by equal signs (=) on either side.
It shows that the relationship between the left and right printed expressions is equal.
All formulas hav LHS = RHS (left side = right side).
You can solve equations to determine the values of unknown variables that represent unknown quantities.
If a statement does not have an equals sign, it is not an equation. A mathematical statement called an equation contains the symbol "equal to" between two expressions of equal value.
According to our question-
tano = perpendicular/base
learn more about equations click here:
brainly.com/question/2972832
#SPJ1.
For each growth rate, find the associated growth factor.
1. 30% increase
2. 30% decrease
3. 2% increase
4. 2% decrease
5. 0.04% increase
6. 0.04% decrease
7. 100% increase
Answer:
The associated growth factor for a 30% increase is 1 + 0.30 = 1.30.
The associated growth factor for a 30% decrease is 1 - 0.30 = 0.70.
The associated growth factor for a 2% increase is 1 + 0.02 = 1.02.
The associated growth factor for a 2% decrease is 1 - 0.02 = 0.98.
The associated growth factor for a 0.04% increase is 1 + 0.0004 = 1.0004.
The associated growth factor for a 0.04% decrease is 1 - 0.0004 = 0.9996.
The associated growth factor for a 100% increase is 1 + 1 = 2.
Step-by-step explanation:
A growth factor is a multiplier that represents the amount by which a quantity changes as a result of a growth rate or percentage change. It is calculated by adding 1 to the decimal form of the growth rate. For example, if the growth rate is 30%, the decimal form is 0.30, and the growth factor is 1 + 0.30 = 1.30.
In case of a decrease, the growth factor is calculated by subtracting the decimal form of the decrease rate from 1. For example, if the decrease rate is 30%, the decimal form is 0.30, and the growth factor is 1 - 0.30 = 0.70.
In cases where the growth rate is a small percentage, it is important to convert it into a decimal by dividing the percentage by 100 before calculating the growth factor.
In the case of a 100% increase, the quantity doubles, so the growth factor is 2 (i.e., 1 + 1).
Laura invierte en un pagaré $12,000. 00 a 7 días cuál es la ganancia en pesos?
As per the promissory note record, the profit in pesos is 0.098%
To do this, we'll need to use a number line to help us understand the relationship between time and the interest rate.
Let's say, that the interest rate on Laura's promissory note is 5% per year. We can represent this on a number line by dividing the line into 365 equal segments, one for each day of the year.
Each segment would represent 1/365th of the total interest rate, or approximately 0.014% (5%/365).
Now, we can mark off the first 7 segments on the number line to represent the 7 days that Laura is holding the investment. The total interest she'd earn over those 7 days would be equal to the sum of the values of those 7 segments.
In this case, that would be 7 x 0.014%, or approximately 0.098%.
To know more about promissory note here
https://brainly.com/question/13717659
#SPJ4
Complete Question:
Laura invests $12,000 in a promissory note. 00 to 7 days what is the profit in pesos?