The conditions required for a random variable X to follow a Poisson process. The probability of success is the sme for aany two intervals of equal length. The probability of two or more successes in any sufficiently small subinterval is 0.
Is the time required to upload a file to the Internet discrete or continuous?Is the length of time it takes to download a file from the Internet a random variable, a continuous random variable, or not at all? A continuous random variable, that is.Is the a discrete random variable a continuous random variable or not a random variable?A variable whose value is determined by counting is referred to as a discrete variable. A continuous variable is one whose value may be determined through measurement. A random variable is a variable whose value is the resultant number of an unpredictable event. There are a countable number of potential values for the discrete random variable X.How do you determine whether the random variable is discrete or continuous?A discrete variable is one that is random. if the number of possible values is either countable or finite. Continuous refers to a variable that is random. if the range of possible values includes all conceivable numbers.
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You must write your answer in fully simplified form.
2t= -12
Answer:
t=-6
Step-by-step explanation:
You have 17 photos.
You want to display as many photos as you can in 3 equal rows.
How many photos won't be displayed?
2 photos will not be displayed
How to determine the number of photos?The given parameters are:
Photos = 17
Rows = 3
Divide 17 by 3 and take note of the remainder
Photos left = 17/3
This gives
Photos left = 5 remainder 2
Hence, 2 photos will not be displayed
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The positive integers $1,$ $2,$ $3,$ $\dots$ are listed in order. What is the $1000^{\rm th}$ positive integer with an odd number of digits
There are 9 positive integers with 1 digit (1 - 9).
There are 90 integers with 2 digits (10 - 99).
There are 900 integers with 3 digits (100 - 999).
There are 9000 integers with 4 digits (1000 - 9999).
And so on. It stands to reason that there are [tex]9\times10^{n-1}[/tex] integers with [tex]n[/tex] digits.
Now,
1000 = 9 + 900 + 91
so the 1000th positive integer with an odd number of digits is the 91th number with 3 digits, which is 190.
If a car manufacturer purchases new labor saving technology for its assembly line we would not expect
If a car manufacturer purchases new labour saving technology for its assembly line then we would not expect the production to be declined,wastage of time and money.
Given that a car manufacturer purchases a new labour saving technology.
We have to write the expectation that the car manufacturer would not make after buying such a technology.
We know that improvement of technology means abolition old technology and adoption of new and improved technology.
The advantages of new technology is:
1) It provides a competitive advantage over the competitor,
2) It increases the production,
3) It saves cost of the company,
4) It saves time also.
If a car manufacturer purchases new labour saving technology for its assembly line then he would not expect the production to be declined, wastage of time and money.
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The ratio between Earth’s distance from the Sun and its scaled distance can be used to find the scaled distance for the other planets. Earth’s distance of 149.6 million kilometers to the Sun is scaled to 5.0 sheets of toilet paper as shown in the table. Now let’s find the scaled distance between Mars and the Sun as an example. Using the calculations shown, Mars’s distance to the Sun of 227.9 million kilometers would be scaled to 7.6 sheets of toilet paper.
d × 149.6 = 227.9 × 5.0
d = 7.6 sheets
Use this same process to complete the table with the scaled distances for the other planets. Round each answer to the tenths place. If you need additional math help, visit the Proportions section of the Math Review.
Using a proportional relationship, the scaled distances, in sheets of toilet paper, are given as follows:
Mercury: 1.9.Venus: 3.6.Jupiter: 26.Saturn: 47.8.Uranus: 95.8.Neptune: 149.9.What is the missing information?The real distances are missing, and they are given in the table at the end of the answer.
What is a proportional relationship?A proportional relationship is a function in which the output variable is given by the multiplication of the input variable and the constant of proportionality, in the case of a direct relationship, as follows:
y = kx
In the case of an inverse relationship, we have that:
y = k/x.
k is the constant of proportionality for both cases.
For this problem, the constant for the Scaled Distances as a function of the Real Distances is given as follows:
k = 5/149.6 = 7.6/227.9 = 0.03334795963.
Hence, the relationship for the Scaled Distances is given by:
S = 0.03334795963R
In which R is the real distance.
Then the scaled distances for the planets are given as follows:
Mercury: 0.03334795963 x 57.9 = 1.9 sheets of toilet paper.Venus: 0.03334795963 x 108.2 = 3.6 sheets of toilet paper.Jupiter: 0.03334795963 x 778.6 = 26 sheets of toilet paper.Saturn: 0.03334795963 x 1433.5 = 47.8 sheets of toilet paper.Uranus: 0.03334795963 x 2872.5 = 95.8 sheets of toilet paper.Neptune: 0.03334795963 x 4495.1 = 149.9 sheets of paper.More can be learned about proportional relationships at https://brainly.com/question/10424180
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Answer:
edmentum/plato hope this can help someone :)
Step-by-step explanation:
After a special medicine is introduced into a petri dish full of bacteria, the number of bacteria remaining in the dish decreases rapidly.
The relationship between the elapsed time ttt, in seconds, and the number of bacteria, B_{\text{second}}(t)B
second
(t)B, start subscript, start text, s, e, c, o, n, d, end text, end subscript, left parenthesis, t, right parenthesis, in the petri dish is modeled by the following function:
Bsecond(t)=6000⋅(1516)t
Complete the following sentence about the rate of change in the number of bacteria in minutes.
After a special medicine is introduced into a petri dish full of bacteria, Every second, the number of harmful bacteria remaining in the body decays by a factor of 0.97
What is bacteria?Generally, a kind of unicellular bacteria that has characteristics with many disease-causing organisms, such as having a cell wall but lacking organelles and an organized nucleus.
In conclusion, When a certain medication is put into a petri dish that is full of bacteria, the amount of pathogenic bacteria that are still present in the body decreases by a factor of 0.97 every single second.
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The supervisor of a fish hatchery measures the length of a particular species every week after hatching to track their growth. If their average length is too short or too long, they are not maturing properly and further tests must be done to determine the cause. She randomly selects 30 fish from among those that hatched five weeks ago and measures their individual lengths in inches to determine if they have grown to an average length of 9.7 inches. She observes an average length of 10.1 inches among the sample. What set of hypotheses is she interested in testing
The z-test score is used for this hypothesis test to decide whether to reject or not to reject the null hypothesis. The z-test score for the given sample is 1.22.
How to calculate z-score for the hypothesis test?The z-score for the hypothesis test is calculated by,
z-score = (X - μ)/(σ/√n)
Where X - sample mean, μ - population mean, σ - standard deviation, and n - sample size.
Calculation:It is given that,
Sample size n = 30
Population mean μ = 9.7
Sample mean X = 10.1
Standard deviation σ = 1.8
So, the z-score is
= (10.1 - 9.7)/(1.8/√30)
= 0.4/0.328
= 1.219 ≅ 1.22
Therefore, the p-value for this z-score is 0.22. This value decides whether to reject or not to reject the null hypothesis.
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A rectangular rug is 12.5 feet long and 10 feet wide. The rug needs to be reduced by a factor of One-fifth. What is the area of the reduced rug?
The area of the reduced rug is 25 square feet
How to determine the area?The dimensions are given as:
Length = 12.5 feet
Width = 10 feet
The area is calculated as:
Area = Length * Width
So, we have:
Area = 12.5 * 10
Evaluate
Area = 125
When reduced by one-fifth, we have:
Area =1/5 * 125
Evaluate
Area = 25
Hence, the area of the reduced rug is 25 square feet
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After working 80 hours at his job, Tyshawn earned a total of $1080. How much does Tyshawn earn
per hour?
The amount Tyshawn earn per hour is $13.5
Ratio and proportionFractions are written as a ratio of two integers
If after working 80 hours at his job, Tyshawn earned a total of $1080, then;
80 hrs = $1080
In order to calculate the amount earned per hour
Amount per hour = 1080/80
Amount per hour = $13.5
Hence the amount Tyshawn earn per hour is $13.5
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Please I’m giving away Brainly ASAP
Answer:
g and f are inverse functions because g(f(x)) = f(g(x)) = x
Step-by-step explanation:
Let's start by finding f(g(x)) and g(f(x)). As we discussed in another question, to find a composite function, apply the outer function to whatever the inner function evaluates to. We can start with f(g(x)):
[tex]f(g(x))=f(\frac{x+6}{7})=7(\frac{x+6}{7} )-6=x+6-6=x[/tex]
Now, let's find g(f(x)):
[tex]g(f(x))=g(7x-6)=\frac{(7x-6)+6}{7} =\frac{7x}{7}=x[/tex]
There is a property that says that if f(g(x)) = g(f(x)) = x, the two functions are inverse. This suggests that g and f are inverse functions. We can verify this by taking one function, switching y and x, and then solving for y. If we complete this process and find that we get the OTHER function, it means the two functions are inverse. Let's try that:
[tex]f(x)=y=7x-6[/tex]
Swap x and y:
[tex]x=7y-6[/tex]
Solve for y:
[tex]x+6=7y\\y=\frac{x+6}{7}[/tex]
Notice that we got g, which means f and g are inverse.
i need help with this page
The ratio of color paper to white is 3:8, if there is 48 white paper how many is colour
There might be 18 colored papers.
colored papers to white papers:
3:8
48 white papers
8x6 = 48
Then 3x6= 18
There might be 18 colored papers.
Ratios evaluate numbers, normally through dividing them. in case you are evaluating one facts factor (A) to another statistics factor (B), your formulation might be A/B. this indicates you are dividing data A by using information B. for example, if A is 5 and B is 10, your ratio will be 5/10.
In mathematics, a ratio indicates how many times one quantity incorporates some other. for instance, if there are 8 oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is 8 to 6. further, the ratio of lemons to oranges is 6:8 and the ratio of oranges to the full amount of fruit is 8:14.
Ratios can be absolutely simplified just like fractions. To simplify a ratio, divide all the numbers in the ratio through the same wide variety until they can not be divided anymore.
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c) 4x-9y = 17 6x - 5y = 17
Answer:
(2, - 1 )
Step-by-step explanation:
4x - 9y = 17 → (1)
6x - 5y = 17 → (2)
multiplying (1) by 6 and (2) by - 4 and adding will eliminate x
24x - 54y = 102 → (3)
- 24x + 20y = - 68 → (4)
add (3) and (4) term by term to eliminate x
0 - 34y = 34
- 34y = 34 ( divide both sides by - 34 )
y = - 1
substitute y = - 1 into either of the 2 equations and solve for x
substituting into (1)
4x - 9(- 1) = 17
4x + 9 = 17 ( subtract 9 from both sides )
4x = 8 ( divide both sides by 4 )
x = 2
solution is (2, - 1 )
2. Using the figure, find and y.
Answer: [tex]x=8, y=2\sqrt 2[/tex]
Step-by-step explanation:
By the Pythagorean theorem, x=8.
So, by the geometric mean theorem,
[tex]y^2 = (6)(2)=8\\\\y=2\sqrt{2}[/tex]
Find the nth term an of the geometric sequence described below, where r is the common ratio.
a4 = -8, r= -2
Answer:
[tex]a_n=(-2)^{n-1}[/tex]
Step-by-step explanation:
So a geometric sequence can be explicitly defined as: [tex]a_n = a_1(r)^{n-1}[/tex]. IN this case we're given r, but we don't know what a_1 is. We can find this by lugging in 4 as n, and -8 as a_n, since they're given values
Plug known values in:
[tex]-8 = a_1(-2)^{4-1}[/tex]
Subtract the values in the exponent
[tex]-8 = a_1(-2)^3[/tex]
Simplify the exponent
[tex]-8 = a_1 (-8)[/tex]
Divide both sides by -8
[tex]1=a_1[/tex]
So the nth term can be defined as: [tex]a_n = 1(-2)^{n-1}[/tex], and since the 1 is redundant, the equation can simply be defined as: [tex]a_n=(-2)^{n-1}[/tex]
Anna is reading a 300-page book. She can read a page in two minutes. If she has finished reading 75 percent of the pages, how many minutes of reading does she have left
Answer:
150 minutes
Step-by-step explanation:
If Anna read 75% of her 300-page book, then she has already read:
300 × 75%
= 300×0.75
= 225
225 pages.
If Anna has already read 225 pages, then she has:
300 - 225 = 75
75 pages left still to read.
If Anna reads 2 minutes per page, then she has
75 × 2 = 150 minutes.
She has 150 minutes of reading left to finish her book.
By the way, it's weird to say you have 150 minutes of something to do. In real life 150 minutes = 2 1/2 hours. jfyi. Have a great day!
How many triangles are there?
Answer:
15 triangles.
Step-by-step explanation:
just count them eventually you will reach there.
Suppose you start at the origin, move along the x-axis a distance of 6 units in the positive direction, and then move downward parallel to the z-axis a distance of 4 units. What are the coordinates of your position
The coordinates of your position are (6, 0, -4).
13. If 3x = xy - 5 and y = 6, what is the value of x? (A) (C) / (B) 3) - 5 (D) slas1 5 اقعا our win
Answer:
x = 5/3
Step-by-step explanation:
3x = xy - 55
3x = x*6 - 5
3x = 6x - 5
3x = 5
x = 5/3
How did the temperature change it increased by 50% and then it decreased by 33 1/3%
There is no change in the temperature.
What is temperature?A temperature is a physical number that describes how hot matter is, or it can be used to calculate the average translational kinetic energy per atom or molecule in a system. It is the measurable fraction of matter's molar thermal energy; a temperature difference allows heat transfer to take place, as energy transfers from a hotter body to a colder body.To find how much temperature is changed:
Let, 'F' be the temperature.
Temperature decreased by [tex]33\frac{1}{3}[/tex]%.
F × (1-.33333) = Temperature increases by 50%.
(F × (1-.33333)(1.50)) = F = No net change, right back to the original temperature F.
Therefore, there is no change in the temperature.
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Hurricane Andrew swept through southern Florida causing billions of dollars of damage. Because of the severity of the storm and the type of residential construction used in the semitropical area, there was some concern that the average claim size would be greater than the historical average hurricane claims of $24,000. Several insurance companies collaborated in a data gathering experiment. They randomly selected 84 homes and sent adjusters to settle the claims. In the sample of 84 homes, the average claim was $27,5000 with a population standard deviation of $2400. Is there sufficient evidence at a 0.02 significance level to support the claim that the home damage is greater than the historical average? Assume the population of insurance claims is approximately normally distributec. Compute the value of the test statistic.
The value of the t test is 13.36, we have to conclude that there is sufficient evidence that suggests that insurance adjustment was greater than $2400.
The hypothesis formulationH0: u = 24000
H1: u > 24000
This test is a right tailed testwe have n = 84 homes
bar x = 27500
s = 2400
Next we have to find the test statistic
The formula for this is given as
[tex]t = \frac{x-u}{s/\sqrt{n} }[/tex]
When we out in the values we would have
[tex]t = \frac{27500-24000}{2400/\sqrt{84} }[/tex]
This would give us the answeer of the t test as
t test = 13. 3658
We have alpha = 0.02
the degree of freedom = 84 - 1 = 83
we have to find tα/2, df
= ±2.0865
Given that the value of the test statistic is greater than critical value we would have to then reject the null hypothesis.
Hence the conclusion that we can make is that there is sufficient evidence that suggests that insurance adjustment was greater than $2400.
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ASAP PLEASEEEEE: The perimeter of a triangle is 44 inches.If one side is 5 inches longer than the smallest side and another side is 1 inch less than twice the smallest side, how many inches are there in the smallest side?
The measure of the smallest side of the triangle is 10 inches
Perimeter of a triangleA triangle is a shape that has 3 sides and angles. The perimeter of a shape is defined as the sum of the sides of the figure.
Let the length of the smallest side be x
If one side is 5 inches longer than the smallest side, then;
L1 = x + 5
If another side is 1 inch less than twice the smallest side, then;
L2 = 2x - 1
Take the sum to have:
x+x+5+2x-1 = 44
4x+4= 44
Subtract 4 from both sides
4x =44 - 4
4x = 40
Divide both sides by 4
x = 40/4
x = 10
Hence the measure of the smallest side of the triangle is 10 inches
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Common significance levels are 0.01 and 0.05. why would it be unwise to use a significance level with a number like 0.0483?
Common significance levels are 0.01 and 0.05. Because the observations in the sample do not come from a random pool, it is impossible to conduct a test based on a population percentage by utilizing the normal approximation approach. This is further explained below.
What is probability?Generally, The possibility of an occurrence may be quantified using the concept of probability. There are many occurrences that cannot be foreseen with complete accuracy.
In conclusion, Both 0.01 and 0.05 are considered to be significant values. It is not feasible to perform a test based on a population percentage using the normal approximation technique because the observations in the sample do not originate from a random pool. This makes it impossible to utilize the normal approximation approach.
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x + 6 x + 5
im trying to find the area of the rectangle in a polynomial standard form
Area of the entire rectangle is x² + 11x + 30. This can be obtained by adding area of each square.
Calculate the polynomial for area of the entire rectangle:Method 1
Area of rectangle = length × width
Area (blue) = length × width = (x) × (x) = x²Area (green) = length × width = (5) × (x) = 5xArea (pink) = length × width = (6) × (x) = 6xArea (orange) = length × width = (6) × (5) = 30Area of entire rectangle = x² + 5x + 6x + 30 = x² + 11x + 30
Method 2
Area of entire rectangle = length × width
= (x+6)×(x+5)
= x² + (6+5)x + (6×5) [∵(x+a)(x+b) =x² + (a+b)x + ab]
= x² + 11x + 30
Hence area of the entire rectangle is x² + 11x + 30.
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what is x and y? i’m having trouble finding what x and y are
Answer:
y is 7, x is 14
Step-by-step explanation:
This is a 30-60-90 triangle,
The hypotenuse, the side opposite of the 90 degree angle, is twice the length of the side opposite of the 30° angle,
The side opposite of the 60° degree angle, is root 3 times the side opposite of the 30° degree angle
So y is
[tex] \frac{7 \sqrt{3} }{ \sqrt{3} } = 7 = y[/tex]
Then, that means x is
[tex]7 \times 2 = 14[/tex]
Angle 0 intersects the unit circle at point (-0.9483, -0.3173). What is the value of tan(0)
The tangent in the unit circle is equal to 0.334.
How to calculate the value of the function tangent with the help of a unit circle
In trigonometry, unit circles are representations of a circle with radius 1 and centered at the origin of a Cartesian plane commonly use to estimate and understand angles and trigonometric functions related to them.
Angles are generated by line segments whose coordinates are of the form (x, y), where x is the position of the terminal point along the x-axis and y is the position of the terminal point along the y-axis.
In addition, the tangent of the angle generated in a unit angle is defined by the following equation:
tan θ = y / x (1)
If we know that x = - 0.9483 and y = - 0.3173, then the tangent of the angle generated in the unit circle is:
tan θ = (- 0.3173)/(- 0.9483)
tan θ = 0.334
The tangent in the unit circle is equal to 0.334.
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Which expressions represent rational numbers? Check all that apply
The expressions that represent rational numbers are; √64 + 6/11, √16 + √169 and 17.43 + √49.
What are the rational expressions?A rational number is simply any integer, terminating decimal/repeating decimal or fraction.
1) √6 + √9 = √6 + 3 → Not rational
2) √64 + 6/11 = 94/11 → Rational number
3) √36 + √21 = 6 + √21 → Not rational
4) √16 + √169 = 17 → Rational number
5) 17.4343434343434343 + √49 = 24.43434343 → Rational number
6) √44 + √25 = 2√11 + 5 → Not rational
Therefore, the expressions that represent rational numbers are; √64 + 6/11, √16 + √169 and 17.43 + √49.
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place 3 numbers between 12 and 60 to make a sequence of 5 numbers with a common difference
Answer:
12-24-36-48-60
if I'm wrong I will try to get back to you and right my wrong
20 PIONTSSS TO WHOEVER ANDWER THIS QUESTION !!! NEED HELP
The surface area of prism 1 is 36 cm²
Calculating surface areaFrom the question, we are to calculate the surface area of prism 1
From the given information, we have that the two hexagon-based prism are similar
Since the shapes are similar, we can write that
(Length of a side in prism 1)² / (Length of the similar side in prism 2)² =
Area of prism 1 / Area of prism 2
From the given information,
Length of a side in prism 1 = 3 cm
Length of the similar side in prism 2 = 8 cm
Area of prism 2 = 256 cm²
Thus,
3² / 8² = Area of prism 1 / 256
Area of prism 1 = (256 × 3²)/ 8²
Area of prism 1 = (256 × 9)/ 64
Area of prism 1 = (2304)/ 64
Area of prism 1 = 36 cm²
Hence, the surface area of prism 1 is 36 cm²
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Triangle RST has sides measuring 22 inches and 13 inches and a perimeter of 50 inches. What is the area of triangle RST? Round to the nearest square inch.
Heron’s formula: Area
19 square inches
37 square inches
60 square inches
95 square inches
Using the Heron's formula, the area of the triangle is: D. 95 square inches.
What is the Heron's Formula?Area = √[s(s - a)(s - b)(s - c)] where s is half the perimeter, or (a + b + c)/2.
Given the following:
s = semi-perimeter = 1/2(50) = 25 in.
a = length of side a = 22 in.
b = length of side b = 13 in.
c = length of side c = 50 - 22 - 13 = 15 in.
Plug in the values
Area = √[25(25 - 22)(25 - 13)(25 - 15)]
Area = √[25(3)(12)(10)]
Area ≈ 95 square inches.
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Answer:
d
Step-by-step explanation: