Answer:
Given that,
Two balls are drawn in succession without replacement from a box containing 5 red balls and 7 black balls.
The possible outcomes and the values of the random variable X, where X is the number of red balls.
1) To find the probability distribution of the number of red balls.
Total possible outcome is
\(12C_2=\frac{12\times11}{2}=66\)We get the X=0,1,2
If there is no red ball,
Then X=0, we get
P(X=0) is,
\(P(X=0)=\frac{5C_0\times7C_2^{}}{12C_2}\)we get,
\(P(X=0)=\frac{1\times7\times3}{6\times11}=\frac{21}{66}\)If there is 1 red ball then X=1
we get,
P(X=1) is
\(P(X=1)=\frac{5C_1\times7C^{}_1}{12C_2}\)\(P(X=1)=\frac{5\times7}{66}=\frac{35}{66}\)If there is 2 red balls then X=2
we get,
P(X=2) is
\(P(X=2)=\frac{5C_2\times7C^{}_0}{12C_2}=\frac{10}{66}\)2)To find cumulative distribution function F(x)
\(F(x)=P(X\leq x)\)when x=0
we get,
\(\begin{gathered} F(0)=P(X\leq0)=P(X=0) \\ F(0)=\frac{21}{66} \end{gathered}\)When x=1 we get
\(F(1)=P(X\leq1)=P(X=0)+P(X=1)\)\(\begin{gathered} F(1)=\frac{21}{66}+\frac{35}{66}=\frac{56}{66} \\ F(1)=\frac{56}{66} \end{gathered}\)When x=2 we get,
\(\begin{gathered} F(2)=P(X\leq2)=P(X=0)+P(X=1)+P(X=2) \\ F(2)=\frac{21}{66}+\frac{35}{66}+\frac{10}{66}=\frac{66}{66} \end{gathered}\)\(F(2)=1\)Dentro de 12 años la edad de Ana será el triple de su edad actual. Determina la edad de Ana dentro de 2 años.
Ana va a cumplir los 36 anos de edad.
10. The distance from the floor to the ceiling in this room is 250 centimeters. If we stack
books from the top of a desk as before, explain how you could determine the number of
books needed to reach the ceiling.
Answer:
\(542\)
pis aret
en la siguiente operacion determina el valer de "a+b+c"
It should be noted that the addition of the variables give in the expression will be 11✓2.
How to calculate the value?It should be noted that the information is incomplete. Therefore, an overview will be given. In this case, let a = ✓2, b = ✓8 and c = ✓128.
This can be illustrated as:
= a + b + c
= ✓2 + ✓8 + ✓128
= ✓2 + 2✓2 + 8✓2
= 11✓2
Therefore, it should be noted that the should be noted that the addition of the variables give in the expression will be 11✓2
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Which value of x makes this equation true?
–5(x – 20) = 35
-
O A. 27
OB
-11
-
ОС.
13
OD. -3
Answer:
x = 13
Step-by-step explanation:
Given:
–5(x – 20) = 35
Solve:
–5(x – 20) = 35
Distribute the equation:
{-5 × x = -5x}
{-5 × -20 = 100}
-5x + 100 = 35
Subtract both sides by 100
-5x + 100 = 35
-5x + 100 - 100 = 35 -100
Simplify
-5x = -65
Divide both sides by -5
-5x/5 = -65/5
Solution:
x = 13
Kavinsky
Answer:
13
Step-by-step explanation:
because 13-20=-7
and -7x-5=35
so the answer is c
pls simplify these two problems:
Answer:
Step-by-step explanation:
1 )
\(\frac{2}{5}( \frac{5x}{4} - \frac{10}{3})-\frac{4x}{3} \\\frac{x}{2} - \frac{4}{3} - \frac{4x}{3}\\ \frac{-5x}{6}-\frac{4}{3}\)
2 )
\(\frac{17x}{8}+\frac{3x}{4}+\frac{1}{6}-\frac{7x}{12}+\frac{17}{3}\\ \frac{51x}{24}+\frac{18x}{24}-\frac{14x}{24}+\frac{35}{6}\\\frac{55x}{24}+\frac{35}{6}\)
Advertising a business. Bobby Flay is deciding how to advertise a new gourmet restaurant that he is opening. An online ad costs $300, and a TV ad costs $700. He has $7,500 to spend on the ads.
Show all work
The inequality representing the given situation is -
300x + 700y ≤ 7500
What is advertising?Advertising is the practice and techniques employed to bring attention to a product or service. Advertising aims to put a product or service in the spotlight in hopes of drawing it attention from consumers.
Given is that Bobby Flay is deciding how to advertise a new gourmet restaurant that he is opening. An online ad costs $300, and a TV ad costs $700. He has $7,500 to spend on the ads.
We can write the inequality as -
300x + 700y ≤ 7500
where -
{x} - number of online ads posted
{y} - number of TV ads poste
Plot the inequality on the graph. The shaded region represents the possible number of advertisements of each category Bobby can use to advertise.
Therefore, the inequality representing the given situation is -
300x + 700y ≤ 7500
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2. (7 points) If f(x) = -5 cosx+xtanx, find df and evaluate if x = pi/4 and dx = 1/24
The value of df, when x = π/4 and dx = 1/24, is (-5π - 5√2)/(96√2).
To find the derivative of the function f(x) = -5cos(x) + xtan(x), we'll use the sum and product rules of differentiation. Let's start by finding df/dx.
Apply the product rule:
Let u(x) = -5cos(x) and v(x) = xtan(x).
Then, the product rule states that (uv)' = u'v + uv'.
Derivative of u(x):
u'(x) = d/dx[-5cos(x)] = -5 * d/dx[cos(x)] = 5sin(x) [Using the chain rule]
Derivative of v(x):
v'(x) = d/dx[xtan(x)] = x * d/dx[tan(x)] + tan(x) * d/dx[x] [Using the product rule]
= x * sec^2(x) + tan(x) [Using the derivative of tan(x) = sec^2(x)]
Applying the product rule:
(uv)' = (5sin(x))(xtan(x)) + (-5cos(x))(x * sec^2(x) + tan(x))
= 5xsin(x)tan(x) - 5xcos(x)sec^2(x) - 5cos(x)tan(x)
Simplify the expression:
df/dx = 5xsin(x)tan(x) - 5xcos(x)sec^2(x) - 5cos(x)tan(x)
Now, we need to evaluate df/dx at x = π/4 and dx = 1/24.
Substitute x = π/4 into the derivative expression:
df/dx = 5(π/4)sin(π/4)tan(π/4) - 5(π/4)cos(π/4)sec^2(π/4) - 5cos(π/4)tan(π/4)
Simplify the trigonometric values:
sin(π/4) = cos(π/4) = 1/√2
tan(π/4) = 1
sec(π/4) = √2
Substituting these values:
df/dx = 5(π/4)(1/√2)(1)(1) - 5(π/4)(1/√2)(√2)^2 - 5(1/√2)(1)
Simplifying further:
df/dx = 5(π/4)(1/√2) - 5(π/4)(1/√2)(2) - 5(1/√2)
= (5π/4√2) - (10π/4√2) - (5/√2)
= (5π - 10π - 5√2)/(4√2)
= (-5π - 5√2)/(4√2)
= (-5π - 5√2)/(4√2)
Now, to evaluate df/dx when dx = 1/24, we'll multiply the derivative by the given value:
df = (-5π - 5√2)/(4√2) * (1/24)
= (-5π - 5√2)/(96√2)
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I NEED HELP GUYS PLEASE!!!! AP STATISTICS
Just count how many times a given age appears in the data. If my eyes aren't deceiving me, I count
• 26: 3
• 27: 5
• 28: 5
• 29: 5
• 30: 2
• 31: 1
• 33: 4
Then the second most frequent age in the data is 33, and the least frequent is 31.
Can I please get some help I’ve been stuck on this question for a while!
Using the radius of the Ferris wheel and the angle between the two positions, the time spent on the ride when they're 28 meters above the ground is 12 minutes
How many minutes of the ride are spent higher than 28 meters above the ground?The radius of the Ferris wheel is 30 / 2 = 15 meters.
The highest point on the Ferris wheel is 15 + 4 = 19 meters above the ground.
The time spent higher than 28 meters is the time spent between the 12 o'clock and 8 o'clock positions.
The angle between these two positions is 180 degrees.
The time spent at each position is 10 minutes / 360 degrees * 180 degrees = 6 minutes.
Therefore, the total time spent higher than 28 meters is 6 minutes * 2 = 12 minutes.
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how to do the full division of 217.44 by 18
plss and dis
Answer:
Step-by-step explanation: Perform the division by considering the dividend a whole number
Answer:
12.08
Step-by-step explanation:
After setting up your equation (217.44/18) you first need to figure out how many times 18 can go into 21 (because 18 cannot go into 2 so it needs to be roped with the 1). After finding this answer, 1, you would have a remainder of 3, this is brought down along with the 7 to give you 37. You now need to find how many times 18 goes into 37, this answer is 2 and your remainder is 1. (At this point you are working in the decimals so make sure to put a decimal in the correct spot). The new number you have after bringing down the 4 is 14. 18 cannot go into 14 so you need to put a zero in the tenths place. You now need to bring down the other 4 and merge it with the existing 14 to give you 144. after dividing 144 by 18 you have 8. Put this 8 in the hundredths place and you have your answer of 12.08.
Learning Task 3 Answer the questions that follow. Put a check mark (/) on the space provided. Copy and answer in your math notebook. 1. The units for Volume are always ______squared _____cubed 2. Volume is the amount of space an object takes up. ___True ___False Calculate for the volume of solid. 3. Chona is selling Pringle Chips to raise money for a field trip. The container has a diameter of 9 inches and a height of 32 inches. 4. A 3-tier cake with the same height of 10 in and radius of 12 in, 8 in, 5 in respectively is to be delivered to a birthday party. How much space does this cake take up? Use 3.14 for π. 5. A Styrofoam model of a volcano is in the shape of a cone. The model has a circular base with a diameter of 48 centimeters and a height of 12 centimeters. Find the volume of foam in the model to the nearest tenth. Use 3.14 for π.
3. The volume of the Pringle Chips container is approximately 2034.72 cubic inches.
4. The cake takes up approximately 7317 cubic inches of space.
5. The volume of foam in the model of the volcano is approximately 7234.08 cubic centimeters.
1. The units for Volume are always cubed.
2. Volume is the amount of space an object takes up. True.
3. To calculate the volume of the Pringle Chips container, we need to find the volume of a cylinder. The formula for the volume of a cylinder is V = πr^2h, where π is a constant (approximately 3.14), r is the radius, and h is the height. Given that the diameter is 9 inches, the radius would be half of that, which is 4.5 inches. Substituting the values into the formula, we have:
V = 3.14 * (4.5)^2 * 32
V = 3.14 * 20.25 * 32
V ≈ 2034.72 cubic inches
4. To find the volume of the 3-tier cake, we need to find the volume of each tier separately and then add them together. Since all the tiers are cylinders, we can use the formula V = πr^2h.
Tier 1:
V1 = 3.14 * (12)^2 * 10 = 4521.6 cubic inches
Tier 2:
V2 = 3.14 * (8)^2 * 10 = 2010.4 cubic inches
Tier 3:
V3 = 3.14 * (5)^2 * 10 = 785 cubic inches
Total volume:
Total V = V1 + V2 + V3
Total V = 4521.6 + 2010.4 + 785
Total V ≈ 7317 cubic inches
5. To find the volume of the Styrofoam model of the volcano, we can use the formula for the volume of a cone, V = (1/3)πr^2h. Given that the diameter is 48 centimeters, the radius would be half of that, which is 24 centimeters. Substituting the values into the formula, we have:
V = (1/3) * 3.14 * (24)^2 * 12
V = (1/3) * 3.14 * 576 * 12
V ≈ 7234.08 cubic centimeters
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Fill in the blanks to complete the rule
uh i could never, sorry
Carlos has chosen 12 different CDs he would like to buy: 4 are rap music, 5 are country, and 3 are heavy metal. He has only enough money to buy 5 of them (each CD costs the same price). So he selects 5 of them at random. What is the probability that his purchase includes at least one CD from each of the three genres.
Answer:
The probability is 0.7449
Step-by-step explanation:
Given
\(n = 12\) ---- total
\(r = 5\) --- selection
\(Genre =\{Rap(4), Country (5), Heavy\ metal (3)\}\)
Required
Probability of buying at least 1 of each genre
First, we calculate the total possible selection.
To select 5 CDs from a total of 12, we use:
\(^nC_r = \frac{n!}{(n - r)!r!}\)
\(^{12}C_5 = \frac{12!}{(12 - 5)!5!}\)
\(^{12}C_5 = \frac{12!}{7!5!}\)
Expand
\(^{12}C_5 = \frac{12*11*10*9*8*7!}{7!*5*4*3*2*1}\)
\(^{12}C_5 = \frac{12*11*10*9*8}{5*4*3*2*1}\)
\(^{12}C_5 = \frac{95040}{120}\)
\(^{12}C_5 = 792\)
So, the total selection is:
\(Total = 792\)
To select at least 1 from each genre, there are 6 possible scenarios.
And they are:
\(\begin{array}{ccc}{Heavy\ Metal (3)} & {Rap (4)} & {Country(5)} & {3} & {1} & {1} & 2 & {1} & {2} & {2} & {2} & {1}& {1} & {2} & {2}& {1} & {3} & {1}& {1} & {1} & {3} \ \end{array}\)
The possible selections for the given scenario is:
\(Possible = ^3C_3* ^4C_1 * ^5C_1 +^3C_2* ^4C_1 * ^5C_2 +^3C_2* ^4C_2 * ^5C_1 +^3C_1* ^4C_2 * ^5C_2 +^3C_1* ^4C_3 * ^5C_1 +^3C_1* ^4C_1 * ^5C_3\)
Using a calculator, we have:
\(Possible = 1*4*5 +3*4*10 +3*6*5 +3*6*10+3*4*5+3*4*10\)
\(Possible= 20 +120 +90 +180+60+120\)
\(Possible = 590\)
The probability is then calculated using:
\(Pr = \frac{Possible}{Total}\)
\(Pr = \frac{590}{792}\)
\(Pr = 0.7449\)
Derrick has $10 in his piggy bank, and saves $3 more per day. Christine has to pay back her parents $8, but she will start saving $4 per day. day they will both have $ Fill in the blanks below with correct day and Monetary Amount: If they both start saving money on the same day, then what day will they have the sam amount of money?
Answer: 18 days
Step-by-step explanation:
10 + 3x = 4x - 8
you see this? pretty cool setup here
ok
so now lets combine like terms. do the opposite on both sides. whats the opposite of 4x? -4x so lets subtract 4x from both sides
10-x=-8
ok now add 8 to both sides
18 - x = 0
x = 18
18 days
OH YEAH!!!! YOU GOT THIS!!!! MASTER OF MATH!!!! OH YEAH!!!! CURIOSITY!!!!!!!!!!!
Which equation calculates the number of 1/8-foot pieces you can cut from 5 feet of ribbon?
40 points! Help (Vectors)
Answer:
distance, speed, time, temperature , work, energy, charge, voltage are all scalar quantities. Displacement, velocity, acceleration, force, electromagnetic field are all vector quantities.
Step-by-step explanation:
Displacement and velocity.
6.4 divided by (-3.2)
Answer:
-2 is the correct answer
Answer:
heyyyy
Step-by-step explanation:
Use implicit differentiation to find dy/dx and d^2y/dx^2.
Using implicit differentiation dy/dx = -(2x + y)/(x + 2y) and d2y/dx² = -2(x² - 3xy - y²)/(x + 2y)³.
Implicit differentiation is the process of differentiating an equation in which it is not easy or possible to express y explicitly in terms of x.
Given the equation x² + xy + y² = 5,
we can differentiate both sides with respect to x using the chain rule as follows:
2x + (x(dy/dx) + y) + 2y(dy/dx) = 0
Simplifying this equation yields:
(x + 2y)dy/dx = -(2x + y)
Hence, dy/dx = -(2x + y)/(x + 2y)
Next, we need to find d^2y/dx^2 by differentiating the expression for dy/dx obtained above with respect to x, using the quotient rule.
That is:
d/dx(dy/dx) = d/dx[-(2x + y)/(x + 2y)](x + 2y)d^2y/dx² - (2x + y)(d/dx(x + 2y))
= -(2x + y)(d/dx(x + 2y)) + (x + 2y)(d/dx(2x + y))
Simplifying this equation yields:
d2y/dx² = -2(x² - 3xy - y²)/(x + 2y)³
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ITS EASY PLS HELP!!!!!
Answer:
3/18
Step-by-step explanation:
Select the expression that has a value of 13.
9 + 3 x (2 ÷ 3) + 6
(9 + 3) x 2 ÷ 3 + 6
9 − (3 x 2) ÷ 3 + 6
(9 + 3 x 2) ÷ 3 + 6
Answer:
9 − (3 x 2) ÷ 3 + 6 is the answer
if 50% is 30 what is 25%
Answer:
15
Step-by-step explanation:
25% is half of 50%, half of 30 is 15
Solve y = x³ for x if y = - 1000.
Answer: x = - 10
Step-by-step explanation:
We will use the equation given, substitute -1,000 in for y, and solve.
y = x³
(1,000) = x³
\(\sqrt[3]{ (1,000)} = \sqrt[3]{x^3}\)
- 10 = x
x = - 10
Show that the set a = (1, 2, 1); b = (0, 1, 0); c = (-2, 0, 2) is linearly dependent.
By definition of linear independence, the vectors in the set {a, b, c} are independent if
\(k_1\vec a+k_2\vec b+k_3\vec c=\vec0\)
can only be obtained with the choice of k₁ = k₂ = k₃ = 0.
This vector equation corresponds to the system of linear equations
\(\begin{cases}k_1 - 2k_3 = 0 \\ 2k_1 + k_2 = 0 \\ k_1 + 2k_3 = 0\end{cases}\)
The first equation says k₁ = 2 k₃, while the third one says k₁ = -2 k₃. This can only be possible if k₁ = k₃ = 0, and from the second equation it follows that k₂ = 0. So the given set is linearly independent (and *not* dependent).
thx guysssssssssssssssssssssssssssssssssssssssss
Indicate in standard form the equation of the line passing through the given points.
P(6,2), Q(8,-4)
Answer:
3x + y = 20
Step-by-step explanation:
Answer:
\(Step1. Find \ slope \ of \ the \ line \ passing \ through\ P(6,2), Q(8,-4)\\m = \frac{y_{2} -y_{1} }{x_{2}- x_{1} } = \frac{-4-2}{8-6} = \frac{-6}{2} = -3\)
\(Step2 . Equation \ of \ line\ \\(y - y_{2}) = m (x -x_{2} )\\ (y + 4) = -3(x - 8)\\y + 4 = -3x +24\\y = -3x +24-4\\y = -3x +20\)
4
(Graphing Proportional Relationships LC)
The table shows a proportional relationship.
x 12 8 24
y 3 26
Describe what the graph of the proportional relationship would look like.
O Aline passes through the point (0, 0) and continues through the point (3, 12).
O Aline passes through the point (0, 0) and continues through the point (2,8).
A line passes through the point (0, 0) and continues through the point (6, 24).
A line passes through the point (0, 0) and continues through the point (12, 3).
Question 2(Multiple Choice Worth 2 points)
(Graphing Proportional Relationships MG)
The correct answer is option D: A line passes through the point (0, 0) and continues through the point (12, 3)
For the first question:
The table shows a proportional relationship between x and y. To describe what the graph of this proportional relationship would look like, we can examine the given data points.
The data points are (12, 3), (8, 26), and (24, ?). We can observe that as x increases, y also increases. This indicates a positive correlation between the variables. Additionally, we can see that the ratio of y to x remains constant for each data point.
Now, let's analyze the answer options:
A. A line passes through the point (0, 0) and continues through the point (3, 12).
This answer option does not align with the given data because there is no data point with an x-value of 3 and a corresponding y-value of 12.
B. A line passes through the point (0, 0) and continues through the point (2, 8).
This answer option aligns with the given data because (2, 8) is a valid data point from the table, and the line passes through the origin (0, 0).
C. A line passes through the point (0, 0) and continues through the point (6, 24).
This answer option does not align with the given data because there is no data point with an x-value of 6 and a corresponding y-value of 24.
D. A line passes through the point (0, 0) and continues through the point (12, 3).
This answer option aligns with the given data because (12, 3) is a valid data point from the table, and the line passes through the origin (0, 0).
Based on the analysis, the correct answer is option D: A line passes through the point (0, 0) and continues through the point (12, 3). This accurately represents the graph of the proportional relationship given in the table.
For the second question, I'm sorry, but you didn't provide the multiple-choice options or the complete question. Could you please provide the question and options so that I can assist you further?
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What is the y intercept of the graph of g(x)=(x+1)(x-2)(x+5)
Answer:
The y intercept is -10
Step-by-step explanation:
Given
\(g(x)=(x+1)(x-2)(x+5)\)
Required
The y intercept
To calculate the y intercept, we set \(x = 0\)
So, we have:
\(g(x)=(x+1)(x-2)(x+5)\)
\(g(0)=(0+1)(0-2)(0+5)\)
\(g(0)=(1)(-2)(5)\)
\(g(0)=-10\)
plzzzzzzzz tell fast
O
Which of the following could be used to calculate the area of the sector in the circle sho
O
m(Sin)
O
WE OD
m(Sin)2
O n(30in)2
O
r-5 in 30
m(30in)
O
above? (5 points)
The Circle Sector Area correct answer is: O n(30in)2
To calculate the area of the sector in the circle, you would typically use the formula:
Area = (θ/360) * π *\(r^2\)
where θ is the angle of the sector in degrees, π is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle.
From the options you provided, the correct choice would be:
O n(30in)2
This option represents the square of the radius (30in) squared, which gives you the value of \(r^2.\)
Therefore, the Circle Sector Area correct answer is: O n(30in)2
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Jason cuts out a square. If he rotates it along the edge labeled s, what three-dimensional shape is formed?
The three-dimensional shape is formed would be as; rectangle
Consider the square that has to be rotated about the axis as shown in the picture.
In the attached diagrams this square is black rectangle ABCD.
While rotating each point of the square will describe the circle. The circles with the greatest radii will be circles made by the points from the side that is opposite to the side on the axis of rotation.
We can take that point in any of the two surrounding quadrants. Example, if the point is on the positive x axis, then it can taken as of first quadrant or fourth quadrant.
The formed figure appears to be a rectangle.
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