The conditions does the function f(x) to meet in order to be able to use the integral test to verify convergence or divergence is
1) f(x) must be continuous, positive, and decreasing for all x greater than some fixed value N.
2) The series to be tested must have non-negative terms.
3) The integral of f(x) from N to infinity must converge or diverge.
To use the integral test to verify the convergence or divergence of an infinite series, the following conditions must be met for the function f(x)
1) f(x) must be continuous, positive, and decreasing for all x greater than some fixed value N.
2) The series to be tested must have non-negative terms.
3) The integral of f(x) from N to infinity must converge or diverge.
If these conditions are met, then the integral test can be used to determine whether the series converges or diverges. Specifically, if the integral of f(x) converges, then the series converges. On the other hand, if the integral of f(x) diverges, then the series also diverges.
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Question 17
USE A MODEL It takes one fuel line 3 hours to fill an oil tanker. How fast must a second fuel line be able to fill the oil tanker so that, when
used together, the two lines will fill the tanker in 45 minutes?
It must be able to fill the tanker in
hour(s).
The second fuel line must be able to fill the oil tanker at a rate of 2.67 tanks per hour in order to fill the tanker in 45 minutes when used together with the first fuel line.
Let's first find the rate of the first fuel line, which can fill the oil tanker in 3 hours. The rate is calculated as follows:Rate of the first fuel line = 1 tank / 3 hours = 1/3 tanks per hour
Let's assume that the rate of the second fuel line is x tanks per hour. When both fuel lines are used together, their combined rate is the sum of their individual rates:
Combined rate = Rate of the first fuel line + Rate of the second fuel line
We need to fill the tanker in 45 minutes, which is 0.75 hours. So, we can set up the equation:1 tank / 0.75 hours = (1/3) tank per hour + x tanks per hour
Simplifying the equation, we get:
1 tank / 0.75 hours - 1/3 tank per hour = x tanks per hour
x = (1 tank / 0.75 hours - 1/3 tank per hour)
x = 2.67 tanks per hour
Therefore, the second fuel line must be able to fill the oil tanker at a rate of 2.67 tanks per hour in order to fill the tanker in 45 minutes when used together with the first fuel line.
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explain what the p-value means in the given context. a state university wants to increase its retention rate of 4% for graduating students from the previous year. after implementing several new programs during the last two years, the university reevaluates its retention rate and comes up with a p-value of 0.075. using , what can we conclude?
In this context, the p-value represents the probability of observing the data or a more extreme result, assuming that the null hypothesis (the retention rate is still 4%) is true.
In other words, it measures the strength of evidence against the null hypothesis. A small p-value indicates that the observed result is unlikely to have occurred by chance alone, while a large p-value suggests that the null hypothesis cannot be rejected.
In this case, the calculated p-value of 0.075 suggests that there is some evidence to reject the null hypothesis that the retention rate is still 4%.
However, since the p-value is above the conventional threshold of 0.05, we cannot conclude with certainty that the new programs have significantly increased the retention rate. Instead, we can say that there is some indication that the programs may have been effective, but further investigation is needed to determine if this is true.
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An office building casts a shadow that is 15 feet long. A nearby tree casts a showdown that is 2/5 feet long. If the tree is 5 feet tall how tall is the office building.
The height of the office building is 187.5 feet.
What are some other names for height?It is typically measured horizontally along the X-axis. Height is defined as the distance between the bottom and top of an object. In Geometry, it is sometimes referred to as altitude.
Let's call the office building's height h. We can use a proportion to find h:
height of office building / length of shadow cast by office building = height of tree / length of shadow cast by tree
h / 15 = 5 / (2/5)
The right side of the equation can be simplified as follows:
5/(2/5) = 5 * 5/2 = 12.5
When we plug this into the proportion and solve for h, we get:
h / 15 = 5 / (2/5)
h / 15 = 12.5 \sh = 15 * 12.5 \sh = 187.5
As a result, the office building's height is 187.5 feet.
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-1/5+2/15 what is the answer the answer to that
Answer:
-0.06666666666
hope it helps :)
if 2400 dollars is invested in an account for 10 years. find the value of the investment at the end of 10 years if the interest is:
The value of the investment at the end of 10 years would be $3,905.76 if the interest rate is 5% per year and compounds annually.
The value of an investment after a certain number of years depends on several factors, including the initial amount invested, the interest rate, and the compounding frequency.
Assuming a fixed interest rate and compounding frequency, we can use the formula for compound interest to calculate the value of the investment after 10 years.
For example, if the interest rate is 5% per year and the investment compounds annually, the formula would be:
A = P(1 + r/n)^(nt)
Where:
A = the final amount
P = the principal (initial investment)
r = the annual interest rate (as a decimal)
n = the number of times interest is compounded per year
t = the number of years
Plugging in the given values, we get:
A = 2400(1 + 0.05/1)^(1*10)
A = 2400(1.05)^10
A = 2400(1.6289)
A = $3,905.76
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Help please it’s urgent
By function, The fact that this number is 1/2 indicates the half-life of the substance is 1 year.
How would you define a function in plain English?
A function is described as a relationship between a set of inputs and one output for every one of them. Simply described, a function is an association of inputs where each input is coupled to a single, distinct output.
Every function has an associated domain, codomain, or range. A mathematical function is a rule that, given the values of one or more independent variables and the dependent variable, determines the value of the dependent variable.
300 represents the initial amount of the substance, the amount present at t=0.
0.5 is the fraction of substance remaining at the end of each year. The fact that this number is 1/2 indicates the half-life of the substance is 1 year.
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what are the appropriate measures of relative standing for ordinal data? percentiles and quartiles quartiles none
The appropriate measures of relative standing for ordinal data are percentiles and quartiles.
What is ordinal data?Ordinal data is a type of categorical data in which the categories are ordered, as in the case of survey data in which respondents are given the option of selecting "poor," "fair," "good," or "excellent" to describe a product, service, or other object. The ordering of the data allows for comparisons between the data sets to be made with greater accuracy than with nominal data, which simply labels data points without any order or ranking.
What are the appropriate measures of relative standing for ordinal data?Percentiles and quartiles are appropriate measures of relative standing for ordinal data. The percentile is a measure of location that specifies the percentage of observations in the distribution that fall below the value. Quartiles are measures of location that divide a dataset into four equal parts. The first quartile (Q1) represents the 25th percentile of the distribution, the second quartile (Q2) represents the 50th percentile, and the third quartile (Q3) represents the 75th percentile.
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Which formula would you use to calculate the total enclosed space of firm’s 3 structure?
To calculate the total enclosed space of a firm's 3 structures, you would need to measure the interior space of each structure and then add the three values together.
Why it is?
Assuming that each structure is a simple rectangular prism, the formula to calculate the volume (enclosed space) of a rectangular prism is:
Volume = Length x Width x Height
Therefore, to calculate the total enclosed space of the three structures, you would use the following formula:
Total Enclosed Space = Volume of Structure 1 + Volume of Structure 2 + Volume of Structure 3
where the volume of each structure would be calculated using the formula:
Volume of Structure = Length x Width x Height
Make sure to use the same unit of measurement for all three dimensions (length, width, and height) for each structure to ensure accurate calculations.
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Complete Question:
What formula would you use to calculate the total enclosed space of a firm's three structures? Please provide the necessary information such as the dimensions or measurements of each structure and the units used, if available, to accurately calculate the total enclosed space.
Can y answer this question please in which number does the digit 3 have a value that is 10 times as great as the value of the digit 3 in 143,728
The answer of the given question based on the greatest value is One such number is 3,043,728.
What is Number System?A number system is a system of representing and expressing numbers in a clear, concise, and organized way. The most commonly used number system is the decimal system, which is based on the numbers 0 through 9. However, there are many other number systems, including binary, octal, hexadecimal, and more.
Each number system has a set of rules and conventions for representing numbers. For example, in the decimal system, each digit can represent a value from 0 to 9, and the position of each digit determines its value.
The digit 3 in 143,728 has a value of 3 x 1000 = 3000. To find a number in which the digit 3 has a value that is 10 times as great as this, we need to find a number in which the digit 3 has a value of 10 x 3000 = 30,000.
One such number is 3,043,728. In this number, the digit 3 appears in the hundred thousands place, which means its value is 3 x 100,000 = 300,000. This is indeed 10 times as great as the value of the digit 3 in 143,728.
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The number 137 has the same relationship to the number 143 as the numbers 398,389,392, which have a digit 3 that is 10 times greater than the number 137.
What is face and place value?A number's face value is the digit itself, while its place value is determined by its placement.
In order to answer the question, we must determine which of the following integers has a value for the digit 3 that is 10 times greater:
If we pay close attention, we can see that the number 137 has a third digit in its tens place while the number 143 has a third digit in its unit place. Additionally, there are 398,389,392, which has a digit 3 and is ten times bigger than the number 137.
These numbers will be written as follows if we now express their location and value in words:
143 = 1 × 100 + 4 × 10 + 3 × 1.
137 = 1 × 100 + 3 × 10 + 7 × 1.
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The complete question is:
In which number does the digit 3 have a value that is 10 times as great as the value of the digit 3 in 143,728? 137,982 142,398 292,389 392,097.
Describe a series of transformations that moves the blue figure to the red figure. If there is a : Translation - show number and direction Reflection - give axis of reflection
Rotation - give direction (clockwise or counterclockwise) and degree amount
Translation: The blue figure can be moved to the red figure by a translation of three units to the right and one unit down.
Reflection: The blue figure can be moved to the red figure by a reflection over the x-axis.
Rotation: The blue figure can also be moved to the red figure by a rotation of 90 degrees counterclockwise.
What is transformation?Transformation in mathematics is the process of changing an object or figure in some way. This includes changing the size, position, rotation or reflection of an object. Transformations can also be used to move a figure from one coordinate system to another. Common transformations include translation, rotation, reflection and scaling.
To demonstrate this transformation, imagine the blue figure being shifted three units to the right and one unit down, such that it is now completely overlapping the red figure.
This transformation can be visualized by imagining the figure being flipped along the x-axis, so that the right side of the figure is now on the left side and vice versa.
To demonstrate this transformation, imagine the blue figure being spun 90 degrees counterclockwise, so that the top of the figure is now on the left side and the bottom is on the right side. This rotation will align the figure with the red figure.
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PLS HELP! WILL MAKE U BRAINLIST!
Find the point of intersection using substitution. DO NOT USE ANOTHER METHOD. Show all your thinking.
Answer:
(-2,-3)
Step-by-step explanation:
3x+y=-9
-3x -3x
y=-3x-9
5x-3(-3x-9)=-1
14x+ 27= -1
-27 -27
14x= -28
/14 /14
x=-2
plug in x
3(-2)+y=-9
-6+y=-9
+6 +6
y=-3
Polygon ABCD with vertices at A(−4, 6), B(−2, 2), C(4, −2), and D(4, 4) is dilated using a scale factor of one eighth to create polygon A′B′C′D′. If the dilation is centered at the origin, determine the vertices of polygon A′B′C′D′.
A′(3.5, −5.25), B′(1.75, −1.75), C′(−3.5, 1.75), D′(−3.5, −3.5)
A′(3.2, −4.8), B′(1.6, −1.6), C′(−3.2, 1.6), D′(3.2, 3.2)
A′(−0.5, 0.75), B′(−0.25, 0.25), C′(0.5, −0.25), D′(0.5, 0.5)
A′(−12, 14), B′(−10, 10), C′(12, −14), D′(12, 12)
The vertices of polygon A'B'C'D' are A′(−0.5, 0.75), B′(−0.25, 0.25), C′(0.5, −0.25), D′(0.5, 0.5).
What is Dilation:In geometry, dilation is a transformation that changes the size of a figure but not its shape. It is a type of similarity transformation.
When a figure is dilated, each point of the figure moves away or towards the center of dilation by a certain scale factor.
Here we have
Polygon ABCD with vertices at A(−4, 6), B(−2, 2), C(4, −2), and D(4, 4) is dilated using a scale factor of one-eighth to create polygon A′B′C′D′.
To dilate polygon ABCD using a scale factor of one-eighth i.e 1/8 multiply the coordinates of each vertex by the scale factor of 1/8.
The coordinates of A are (-4, 6), multiply each coordinate by 1/8
A' = (-4/8, 6/8) = (-1/2, 3/4) = (-0.5, 0.75)
The coordinates of B are (-2, 2), multiplying each coordinate by 1/8
B' = (-2/8, 2/8) = (-1/4, 1/4) = (-0.25, 0.25)
The coordinates of C are (4, -2), multiplying each coordinate by 1/8
C' = (4/8, -2/8) = (1/2, -1/4) = (0.5, - 0.25)
The coordinates of D are (4, 4). Multiplying each coordinate by 1/8
D' = (4/8, 4/8) = (1/2, 1/2) = (0.5, 0.5)
Therefore,
The vertices of polygon A'B'C'D' are A′(−0.5, 0.75), B′(−0.25, 0.25), C′(0.5, −0.25), D′(0.5, 0.5).
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The circumference of circle A is 21.99 cm. The circumference of circle B is 51.52 cm. What is the difference between the lengths of the radii to the nearest hundredth? Show all your work and circle your answer.
The difference between the lengths of the radii is approximately 4.70 cm.
What is circle ?
A circle is a two-dimensional geometric shape that is defined as the set of all points in a plane that are at a given distance (called the radius) from a given point (called the center). It can also be defined as the locus of all points that are equidistant from a given point. A circle is a closed curve and its circumference is the distance around the circle.
We know that the formula for the circumference of a circle is:
C = 2πr
Where C is the circumference and r is the radius.
For circle A, we have:
21.99 = 2πr
Dividing both sides by 2π, we get:
r = 3.5
For circle B, we have:
51.52 = 2πr
Dividing both sides by 2π, we get:
r = 8.2
The difference between the radii is:
8.2 - 3.5 = 4.7
Rounding to the nearest hundredth, we get:
4.7 ≈ 4.70
Therefore, the difference between the lengths of the radii is approximately 4.70 cm.
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The expression the quantity cosecant squared of theta minus 1 end quantity over cotangent of theta simplifies to which of the following?
The quantity cosecant squared of theta minus 1 can be simplified as 1/(cosecθ)² - 1. So, the correct answer is -1/tanθ.
What is cosecant?Cosecant, denoted as csc, is a trigonometric function that is the reciprocal of the sine function. It is the ratio of the side opposite the angle over the hypotenuse in a right triangle.
This can be further simplified by multiplying the numerator and denominator of the fraction by the cosecant of theta to get the expression 1 - cosec²θ/cosecθ.
Rearranging this expression gives -cosec²θ/cosecθ.
The cosecant of theta can be further simplified by using the identity cosecθ = 1/sinθ.
Substituting this into the expression gives -1/sin2θ.
The sine of theta can then be further simplified by using the identity
sinθ = 1/tanθ.
Substituting this into the expression gives -1/tan²θ.
Finally, using the identity tan²θ = tanθ/1 simplifies the expression to -1/tanθ.
Therefore, the correct answer is -1/tanθ.
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Question:
The expression the quantity cosecant squared of theta minus 1 end quantity over cotangent of theta simplifies to which of the following?
A. 1
B. 0
C. -cotθ
D. -1/tanθ
You are offered a job that pays $34,000 during the first year, with an annual increase of 6% per year beginning in the second year. That is, beginning in year 2, your salary will be 1.06 times what it was in the previous year. What can you expect to earn in your fourth year on the job? Round your answer to the nearest dollar.
H + i3 where i = 1 and h = 19 caculate please
Answer: 22
Step-by-step explanation:
Substitude 1 for i and 19 for H.
19+1(3) = 19+3 = 22
A 13 ft ladder is leaning against a building. The top of the ladder is 6 ft above the ground.
How far from the building is the ladder?
Enter your answer, rounded to the nearest tenth of a ft,
Thus, the distance of ladder from the building is found to be 11.53 ft.
Explain about the Pythagorean theorem?Exactly single right angle measure 90 degrees characterises a right triangle.
The hypotenuse of the a right triangle's square is equal to the sum of its other two sides, according to the Pythagorean Theorem. It is written as a²+b²=c² in equation form.
Pythagoras is in the form of;
a²+b²=c²
Let the distance of ladder from the building be 'x'.
Height of ladder from ground h = 6 ft.
Length of ladder l = 13 ft.
Here, using the Pythagorean theorem;
x² + 6² = 13²
x² = 13² - 6²
x² = 169 - 36
x² = 133
x = √133
x = 11.53
Thus, the distance of ladder from the building is found to be 11.53 ft.
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four times the sum of a number and four is 136. translate into an equation and then solve for the number?
Answer: y-98
Step-by-step explanation:
The amount A, in milligrams, of a 10-milligram dose of a drug remaining in the body after t hours
is given by the formula A = 10(08)t Find, to the nearest tenth of an hour, how long it takes for half
of the drug dose to be left in the body.
It takes 3.1 hour for half of the drug dose to be left in the body.
MilligramIn the metric system the unit measurement of mass is known as mg .
mg is equal to one thousandth of a gram ie.1/1000. The unit is often used in medical field for weighing out small quantities of ingredients.
prons
it is precise and it can be used to measure small quantities of items.
It is easy to convert mg to other units of measure.
cons:
It is a very small unit of measurement, it is difficult to measure the values accurately.
It is also a very commonly used unit of measurement, it get easily confuse with other units
10*1/2=10(0.8)^t
0.8^t=1/2
t=log0.8*1/2
t=3.1
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a car starts off 186 miles directly south from the city of hartville. it travels due east at a speed of 48 miles per hour. after travelling 111 miles, how fast is the distance between the car and hartville changing?
the rate of change of the distance between the car and Hartville is:
dd/dt = (111*48)/sqrt(48477) ≈ 25.63 mph
We can use the Pythagorean theorem to determine the distance between the car and Hartville at any time. Let's call this distance "d".
At the start of the trip, d = [tex]\sqrt{(186^2 + 0^2) }[/tex]= 186 miles.
After traveling 111 miles due east, the car will have traveled for t = 111/48 = 2.3125 hours. During this time, the car will have moved north by a distance of 2.3125 * 0 = 0 miles, and east by a distance of 2.3125 * 48 = 111 miles.
Now, we can use the chain rule to find the rate of change of d with respect to time:
[tex]d^2 = x^2 + y^2[/tex]
Differentiating both sides with respect to time, we get:
2d(dd/dt) = 2x(dx/dt) + 2y(dy/dt)
where x and y are the east and north distances traveled by the car, respectively.
Since the car is traveling due east, dy/dt = 0. Also, at the instant when the car is 111 miles east of Hartville, x = 111 and y = 186.
Substituting these values, we get:
2d(dd/dt) = 2111(48) + 2186(0)
Simplifying:
dd/dt = (111*48)/d
At the instant when the car is 111 miles east of Hartville, we have:
d = [tex]\sqrt{(48477)}[/tex]
So the rate of change of the distance between the car and Hartville is:
dd/dt = (111*48)/[tex]\sqrt(48477)[/tex] ≈ 25.63 mph
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Need the answer to this ASAP!!
The distance between points F and G is 12.806 units. The coordinates of F are (6,6) and the coordinates of G are (16,14).
What is distance?Distance in a graph is a measure of the difference between two points. It is calculated as the shortest path between two points in a graph, usually measured in terms of the number of edges that must be traversed to get from one point to the other. Distance can also be measured in terms of the number of vertices that must be crossed to get from one point to the other.
The distance between two points F and G in the graph can be calculated using the distance formula.
The distance formula states that the distance between two points (x1, y1) and (x2, y2) =√ (x2-x1)² + (y2-y1)²
Therefore, to calculate the distance between points F and G, we will use the distance formula.
The coordinates of F are (6,6) and the coordinates of G are (16,14).
Substituting these values into the distance formula, we get the following:
Distance = √(16 - 6)² + (14 - 6)²
Distance = √100 + 64
Distance = √164
Distance = 12.806
The distance between points F and G is 12.806 units.
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What is the value of 2(÷)3+if x = 72, y = 24, and z=12?
the value of the expression 2 ÷ 3 + (x / y) - z, where x = 72, y = 24, and
z = 12, is approximately -8.33.
However, assuming that the intended expression is 2 ÷ 3, we can evaluate it using the rules of arithmetic. Division is performed before addition, so the expression can be rewritten as:
2 ÷ 3 + (x / y) - z
Substituting the given values of x, y, and z, we get:
2 ÷ 3 + (72 / 24) - 12
To evaluate this expression, we need to perform the division first:
2 ÷ 3 + 3 - 12
Next, we can simplify by combining like terms:
2 ÷ 3 - 9
To evaluate this expression, we need to perform the division first:
0.666666... - 9
Finally, we can simplify by subtracting:
-8.333333...
Therefore, the value of the expression 2 ÷ 3 + (x / y) - z, where x = 72, y = 24, and z = 12, is approximately -8.33.
It's important to note that if the intended expression was not 2 ÷ 3, the answer may be different. Additionally, it's important to be clear and precise when writing mathematical expressions to avoid ambiguity and confusion.
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Acellus; Perimeter, Circumference, and Area II
Based on the information, the area of the figure would be: 86.13 units ²
How to find the area of the figure?To find the area of the figure we must perform the following procedure:
1. Find the area of the triangle with the following formula:
height * base / 2 = area of the triangle
6 * 6 / 2 = area of the triangle
18 = area of the triangle
2. Find the area of the rectangle with the following formula:
height * base = area of rectangle
6 * 9 = area of the rectangle
54 = area of rectangle
3. Find the area of the semicircle with the following formula:
[tex]\pi[/tex] * r² / 2 = area of the semicircle
[tex]\pi[/tex] * 3² / 2 = area of the semicircle
[tex]\pi[/tex] * 9 / 2 = area of the semicircle
28.27 / 2 = area of the semicircle
14.13 = area of the semicircle
4. We must add the area of all the figures to find the total area.
14.13 + 54 + 18 = 86.13 units ²
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on a biased dice, the probability of getting a two is 0.1. the dice is rolled 250 times
Answer:
If the probability of getting a two on a biased dice is 0.1, then the probability of not getting a two is 0.9.
To find the expected number of times a two is rolled in 250 rolls:
Expected value = (probability of an event occurring) x (number of trials)
Expected number of twos = 0.1 x 250 = 25
To find the expected number of times a number other than two is rolled in 250 rolls:
Expected number of non-twos = 0.9 x 250 = 225
Therefore, we would expect to roll a two 25 times and a number other than two 225 times in 250 rolls of this biased dice.
Answer:
0.790, or 79%.
Step-by-step explanation:
If the probability of getting a two on a biased dice is 0.1, then the probability of not getting a two is 0.9.
We can use the binomial distribution to calculate the probability of getting a certain number of twos in 250 rolls of the dice. The formula for the binomial distribution is:
P(X = k) = C(n, k) * p^k * (1-p)^(n-k)
Where:
P(X = k) is the probability of getting exactly k twos
n is the number of trials (250 rolls)
k is the number of successes (getting a two)
p is the probability of success (0.1)
(1-p) is the probability of failure (0.9)
C(n, k) is the number of ways to choose k successes from n trials (n choose k)
To calculate the probability of getting exactly k twos in 250 rolls, we plug in the values for n, k, p, and (1-p) into the formula:
P(X = k) = C(250, k) * 0.1^k * 0.9^(250-k)
We can use a calculator or a software program to find the probabilities for different values of k. Here are some examples:
The probability of getting no twos (k = 0) is P(X = 0) = C(250, 0) * 0.1^0 * 0.9^250 = 0.057
The probability of getting exactly one two (k = 1) is P(X = 1) = C(250, 1) * 0.1^1 * 0.9^249 = 0.153
The probability of getting at least two twos (k >= 2) is the complement of the probability of getting zero or one two:
P(X >= 2) = 1 - P(X = 0) - P(X = 1)
= 1 - 0.057 - 0.153
= 0.790
Therefore, the probability of getting at least two twos in 250 rolls of the biased dice is approximately 0.790, or 79%.
please leave a star
Find the areas of the figures whose vertices are
(a) (0,0), (3,7), (5,1)
(c) (-4,2), (0,-8), (5,11)
(e) (-2,-4), (3,1), (-1,5), (6,-3)
(b) (-1,-2), (-2,3), (4,-4)
(a) The area of the triangle is 16 square units.
(b) The area of the triangle is 54 square units.
(c) the area of the quadrilateral is 20 square units.
(d) The area of the triangle is 12.5 square units.
What is the area of the figures?(a) To find the area of the triangle with vertices (0,0), (3,7), and (5,1), we can use the formula:
A = 1/2 | x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2) |
Plugging in the values, we get:
A = 1/2 | 0(7 - 1) + 3(1 - 0) + 5(0 - 7) |
= 1/2 | 0 + 3 - 35 |
= 1/2 |-32|
= 16
(b) To find the area of the triangle with vertices (-4,2), (0,-8), and (5,11), we can again use the same formula:
A = 1/2 | x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2) |
Plugging in the values, we get:
A = 1/2 | (-4)(-8 - 11) + (0)(11 - 2) + (5)(2 - (-8)) |
= 1/2 | 108 |
= 54
(c) To find the area of the quadrilateral with vertices (-2,-4), (3,1), (-1,5), and (6,-3), we can divide it into two triangles and find the area of each triangle.
We can use the formula for the area of a triangle:
A = 1/2 | x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2) |
For the triangle with vertices (-2,-4), (3,1), and (-1,5), we get:
A1 = 1/2 | (-2)(1 - 5) + (3)(5 + 4) + (-1)(-4 - 1) |
= 1/2 | (-8 + 35 + 5) |
= 16
For the triangle with vertices (3,1), (-1,5), and (6,-3), we get:
A2 = 1/2 | (3)(5 + 3) + (-1)(-3 - 1) + (6)(1 - 5) |
= 1/2 | (24 + 4 - 20) |
= 4
Therefore, the area of the quadrilateral is:
A = A1 + A2
= 16 + 4
= 20 square units
(d) To find the area of the triangle with vertices (-1,-2), (-2,3), and (4,-4), we can use the same formula:
A = 1/2 | x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2) |
Plugging in the values, we get:
A = 1/2 | (-1)(3 + 4) + (-2)(-4 + 2) + (4)(-2 - 3) |
= 1/2 | (-7 - 4 - 14) |
= 12.5
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F(x)=l3xl+3
g(x)=-x+8x-5
Represent the interval where both functions are increasing on the number line provided
the interval where both F(x) and g(x) are increasing is x < 0, which can be represented on the number line as follows:
To find the interval where both functions F(x) and g(x) are increasing, we need to determine where the derivative of each function is positive. A function is increasing when its derivative is positive, which means that the function is becoming larger as x increases.
The derivative of F(x) can be found by applying the derivative rules for absolute value and addition, which gives us:
F'(x) = 3x/|x|
Now, we need to determine where F'(x) is positive. This occurs when either 3x is positive and |x| is positive, or when 3x is negative and |x| is negative. Therefore, F'(x) is positive for x > 0 and x < 0.
Next, we need to find the derivative of g(x) by applying the derivative rules for subtraction and multiplication, which gives us:
g'(x) = -1 + 8
Simplifying the expression, we get:
g'(x) = 7
Since g'(x) is a constant, it is always positive, which means that g(x) is increasing for all values of x.
To find the interval where both F(x) and g(x) are increasing, we need to identify where both F'(x) and g'(x) are positive. This occurs when x < 0, as this satisfies the condition for F'(x) being positive, and g'(x) is always positive.
Therefore, the interval where both F(x) and g(x) are increasing is x < 0, which can be represented on the number line as follows:
<=====o------------------------>
x<0 x>0
In this interval, both functions are increasing as x becomes more negative.
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Seth is analyzing the number of students in his class and
The least likely event from given events is Option B: A randomly selected student who is freshmen owns a skateboard.
The event whose occurence is minimum is least likely event.
Suppose there are finite elementary events in sample space of considered experiment and all are equally likely.
Then, we want to find the probability of an event E.
Then, its probability is given as
P(E) = Number of favourable cases/ Number of total cases = n(E)/n(S)
where favorable cases are the elementary events who belong to E, and total cases are size of sample space.
For two events A and B, by chain rule, we have:
P(A∩B) = P(B)P(A|B) = P(A)P(A|B)
How to find the conditional probability:
Suppose that there are two events A and B. Then suppose the conditional probability are:
P(A|B) = probability of occurrence of A given B has already occurred.
P(B|A) = probability of occurrence of B given A has already occurred.
We can then use the chain rule to find them, or Bayes theorem also helps in finding these probabilities.
We are given the table of joint relative frequency:
We take events as A, A' and B and B'
Important probabilities which will be used are evaluated as:
P(A) = n(A)/n(S) = 150/1200 = 1/8
P(B) = n(B)/n(S) = 250/1200 = 5/24
P(A') = 1 - P(A) = 7/8
P(B') = 1 - P(B) = 1 - 5/24 = 19/24
P(A∩B) = n(A∩B) / n(S) = 40/1200 = 1/30
P(A'∩B') = n(A'∩B') / n(S) = 840/1200 = 7/10
P(A'∩B) = n(A'∩B) / n(S) = 210/1200 = 7/40
Evaluating probabilities of choices given, we get:
Case 1: E = A random selected student who owns skateboard is freshmen
P(E) = ?
P(E) = P(B|A) = P(A∩B) / P(A) = 1/30 ÷ 1/8 = 4/15
Case 2: E = A random selected student who is freshmen owns skateboard:
P(E) = P(A|B) = P(A∩B) / P(B) = 1/30 ÷ 5/24 = 4/25
Case 3: E = A random selected student who doesn't owns skateboard is freshmen
P(E) = P(B|A') = P(A'∩B) / P(A') = 7/40 ÷ 19/24 = 21/95
Case 4: E = A randomly selected student who doesn't owns skateboard is not freshmen
P(E) = P(B'|A') = P(A'∩B') / P(A') = 7/10 ÷ 19/24 = 84/95
So, the least probability is for second case.
Question - Seth is analyzing number of students in class and high school who own skateboards. He puts the data in table shown. Given information in table, which event is least likely?
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in how many positive four-digit integers that are not multiples of $1111$ do the digits form an arithmetic sequence? (the digits must form an arithmetic sequence, in order. for example, the number $5137$ does not count.)
$8\times9\times8\times9 = 5184$
There are a total of $8\times9\times8\times9 = 5184$ positive four-digit integers that are not multiples of 1111 and form an arithmetic sequence. To explain further, the first digit can be any integer from 1 to 8 (not 0 as the number must be four-digits long). Once the first digit is chosen, the second digit can be any integer from 1 to 9. Once both the first and second digits are chosen, the third digit can be any integer from 1 to 8, and finally the fourth digit can be any integer from 1 to 9. Therefore, the total number of four-digit integers that are not multiples of 1111 and form an arithmetic sequence is $8\times9\times8\times9 = 5184$.
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Which expression was factored completely using the GCF, if the original expression was
16x² + 8x?
4(4x²+2x)
4x(4x+2)
8(2x²+x)
8x(2x+1)
Answer:
It's D
Step-by-step explanation:
[tex]1. \: gcf = 8x \\ 2. \: 8x( \frac{16x {}^{2} }{8x} + \frac{8x}{8x} ) \\ 3. \: 8x(2x + 1)[/tex]
Three and seven tenths times five
Answer:
6.5
Step-by-step explanation:
3 + (and) 7/10 x 5 = 6.5
Hope this helps!
