There are 336 ways for the 8 team entrants to achieve the desired outcome of first, second, and third place positions.
The problem involves selecting 3 individuals out of 8 to fill the 1st, 2nd, and 3rd place positions. Since the order in which the individuals are selected matters, we need to use the permutation formula to determine the total number of ways to achieve the desired outcome.
The formula for permutation is:
P(n,r) = n! / (n-r)!
Where n is the total number of individuals, and r is the number of positions to be filled.
In this case, we need to select 3 individuals out of 8 to fill the 1st, 2nd, and 3rd place positions. Using the permutation formula, we get:
P(8,3) = 8! / (8-3)!
= 8! / 5!
= (8 x 7 x 6 x 5 x 4 x 3 x 2 x 1) / (5 x 4 x 3 x 2 x 1)
= 8 x 7 x 6
= 336
In other words, the coach has 336 possible ways to select three team members for the podium, assuming all team members have an equal chance of winning.
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An isosceles right triangle is removed from
each corner of a square piece of paper, as
shown, to create a rectangle. If AB = 12 units,
what is the combined area of the four removed
triangles, in square units?
The combined area of the four removed triangles is 48 sq.units. Answer: 48
We need to find out the combined area of the four removed triangles, in square units. Given: AB = 12 units.
Let's consider the given square, and let's draw an altitude BD and also draw perpendiculars to BD from the three vertices A, C and D.
Let AB = x cm. Area of square = x² sq.cm.
Now, we are cutting a triangle with base x and height x, which is a right-angled triangle. Hence, area of each removed triangle = (1/2) * x * x = (x²/2) sq.cm.
Now, BD = x/√2. Area of rectangle = AB * BD = 12 * 12/√2 = 72√2 sq.cm.
Now, area of 4 triangles = (x²/2) + (x²/2) + (x²/2) + (x²/2) = 2x² sq.cm.
We know that, Area of rectangle = Area of 4 triangles + Area of square => 72√2 = 2x² + x² => 72√2 = 3x² => x² = 24√2 cm² => x = √(24 * 2) cm = √(48) cm = 4√3 * √2 cm.
Area of 4 triangles = 2x² sq.cm = 2 * 24 cm² = 48 sq.cm.
Hence, the combined area of the four removed triangles is 48 sq.units. Answer: 48.
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The table shows four transactions (in dollars) for a bank account. Positive numbers represents deposits, and negative numbers represent withdrawals. The balance before the transactions is $75.50. What could the transaction for 11/7 be if the final balance in the bank account is $86.92? Date Amount 11/4 50.68 11/4 -22.16 11/7 11/11 56.65 End Balance 86.92
Answer:
11/7: +9.42
Step-by-step explanation:
A researcher found a study relating the distance a driver can see, y, to the age of the driver, When researchers looked at the association of x and y, they found that the coefficient of determination was =0.542. Select two conclusions that the researcher can make from this data. a.) The correlation coefficient, t, is-0 458. b.) About 54% of the variation in distance that the driver can see is explained by a linear relationship with the driver's age. O c.) About 74% of the variation in the driver's age is explained by a linear relationship with the distance that the driver can see O d.) The correlation coefficient, t.is -0736. e.) About 46% of the variation in distance that the driver can see is explained by a linear relationship with the driver's age. 1.) The correlation coeficient 0 271 A data set was grapned using a scatterpion 30 25 20 15 10 5 0 0 5 10 15 20 25 30 The correlation coefficient, r, is 0.813 Which of the following statements explains how the correlation is http/phoenix.sophia.org/tutorials/cautions-about-correlation-2/download ndf The correlation coefficient, r, is 0.813. Which of the following statements explains how the correlation is affected? O a.) It is affected by inappropriate grouping. O b.) It is not affected. c.) It is affected by an influential point. d.) It is affected by non-linearity. SUBMIT MY ANSWER Which of the following statements is TRUE? O a.) Low correlation implies causation b.) A high correlation means that the response variable is caused by the explanatory variable. O c.) High correlation does not always establish causation O d.) To imply causation, the correlation must be 1. SUBMIT MY ANSWER Javascriptvo do)
1)From the data:
Two conclusions that the researcher can make are:
b.) About 54% of the variation in the distance that the driver can see is explained by a linear relationship with the driver's age.
d.) The correlation coefficient, t, is -0.736. (This can be found by taking the square root of the coefficient of determination and considering the negative correlation)
2)"It is not affected" is the correct statement,that is option b
3)The "High correlation does not always establish causation" is the TRUE statement, that is option c .
What is Correlation?
Correlation is a statistical measure that indicates the extent to which two or more variables fluctuate together.
A positive correlation indicates that as one variable increases, the other variable also increases.
A negative correlation indicates that as one variable increases, the other variable decreases. In other words, it shows the relationship between two variables and helps to understand if they are related or independent.
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factorise x²-2xy-y²-z²
Answer:
(x^2−2xy+y^2)−z^2
⇒[x(x−y)−y(x−y)]−z^2
⇒(x−y)(x−y)−z^2
⇒(x−y)^2−z^2
⇒[(x−y)+z][(x−y)−z]
⇒(x−y+z)(x−y−z)
six less than six times a number
Answer:
6n-6 or 6(n-1)
Step-by-step explanation:
six times a number, n, can be shown as 6n. "Six less" indicates -6. So combining the two parts leaves 6n-6. This can be simplified to 6(n-1)
please help i will give brainliest along with 20 pnts. ONLY ANSWER IF YOU KNOW IT
Giovanna deposited $1600 into two accounts, half in First Oak and half in West United.
Interest earned in First Oak account after 5 years at 6% simple interest:
= 0.06 x $800 x 5
= $240
Interest earned in West United account after 5 years at 5% compounded annually:
= $800 x (1 + 0.05)^5 - $800
= $800 x 1.27628 - $800
= $221.02
Total interest earned in both accounts:
= $240 + $221.02
= $461.02
Therefore, Giovanna will have earned $461.02 in interest from both accounts at the end of 5 years.
Identify all expressions below that are polynomials.
Answer:
All the expressions except d are polynomials.
Which summary about The Secret Garden includes a personal opinion?
Responses
Mary Lennox is described as a sallow, sickly, unpleasant girl.
Mary Lennox is described as a sallow, sickly, unpleasant girl.
Mr. Craven, "a miserable hunchback," has been withdrawn and depressed for ten years.
Mr. Craven, "a miserable hunchback," has been withdrawn and depressed for ten years.
Dickon and Mary secretly begin bringing Colin out into the secret garden.
Dickon and Mary secretly begin bringing Colin out into the secret garden.
Mrs. Lennox is the worst mother imaginable, and everybody knows it.
PLS HELP FAST
Answer:
"Mrs. Lennox is the worst mother imaginable, and everybody knows it."
Step-by-step explanation:
The first one uses "described", therefore isn't a personal opinion.
The second uses quotations, so isn't a personal opinion.
The third doesn't have any sort of opinion or connotation.
Therefore it must be the last one.
Let me know if this helped by hitting like or brainliest! If not, please comment below and I'll get back to you ASAP.
if hope has 4 more quarters than nickels and they have a combined value of 280 cents, how many of each coin does she have?
Hope has 6 nickels (x) and 10 quarters (x + 4).
How many of each coin Hope has if she has 4 more quarters than nickels and they have a combined value of 280 cents. To solve this problem, we can use algebraic equations.
Let's assume the number of nickels Hope has is x. Then, the number of quarters she has would be x + 4.
Now, we need to find the total value of the coins. Each nickel is worth 5 cents, so the total value of nickels is 5x cents. Similarly, each quarter is worth 25 cents, so the total value of quarters is 25(x + 4) cents. The combined value of the coins is 280 cents, so we can set up an equation:
5x + 25(x + 4) = 280
Simplify and solve for x:
5x + 25x + 100 = 280
30x = 180
x = 6
Therefore, Hope has 6 nickels (x) and 10 quarters (x + 4).
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How do I solve this I don’t get it
Surface area , Lateral area and volume of triangular prism area 262.25 square in, 231 square in and 156.25 cubic in respectively.
The meaning of the triangular prismWith two triangular bases and three rectangular sides, a triangular prism is a kind of polyhedron. Alternatively, because it has five faces overall, it may be thought of as a pentahedron in which the bases' edges and vertices are connected by three rectangular sides.
Surface area of triangular prism:Given, base (b) =5 in ,
the height of the triangle (h) = 6.25 in
length of a prism (l) = 12 in
and the hypotenuse of the right triangle = 8 in
The surface area of a right triangular prism = b×h + (S1 + S2 + h)L
On substituting the values, we get
SA = (5 × 6.25) + [(5 + 6.25 + 8) × 12]
⇒ SA = 60 + (30 × 11)
⇒ SA =262.25 square in
Therefore, the total surface area of a right triangular prism is 262.25 square in.
Lateral area of triangular prism:Lateral Area = ( S1 + S2 + S3 ) × l
On substituting the values, we get
LA=(5+6.25+8)×12
LA=(19.25)×12
LA=231 square in
Therefore, the lateral surface area of a right triangular prism is 231 square in.
Volume of triangular prism:the base area = (1/2) × (b×h) = (1/2) × (5 ×6.25) =15.625 square in
The length of the prism is, L = 12 in
Using the volume of the triangular prism formula,
The volume of the given triangular prism = base area × length of the prism = 15.625 ×10=156.25 cubic in
Hence, The volume of the given triangular prism is 156.25 cubic in.
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FIND THE MISSING SIDES OF THE KITE
Picture for more info!
Thank you.
The required sides of kite are √61, √61, √221 and √221 units.
What is Pythagoras theorem?According to the Pythagoras theorem, the square of the hypotenuse in a right-angled triangle equals the total of the squares of the other two sides. The formula for this theorem is c² = a² + b², where c is the hypotenuse and a and b are the triangle's two sides. Pythagoras theory triangles are another name for these triangles.
According to question:In ΔAOD
AD = [tex]\sqrt{5^2+6^2} = \sqrt{61}[/tex] units
In ΔAOB
AB = [tex]\sqrt{5^2+6^2} = \sqrt{61}[/tex] units
In ΔBOC
BC = [tex]\sqrt{5^2+14^2} = \sqrt{221}[/tex] units
In ΔDOC
DC = [tex]\sqrt{5^2+14^2} = \sqrt{221}[/tex] units
Thus, required sides of kite are √61, √61, √221 and √221 units.
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1. if you repeated a hypothesis test 1000 times (i.e. 1000 different samples from the same population), how many times would you expect to commit a type i error, assuming the null hypothesis were true, if:
If we repeated a hypothesis test 1000 times, the number of times we would expect to commit a Type I error, assuming the null hypothesis were true, would depend on the significance level (α) of the test.
A Type I error occurs when we reject the null hypothesis when it is actually true. The significance level of a test (α) is the probability of making a Type I error when the null hypothesis is true. In other words, if we set a significance level of α = 0.05, we are saying that we are willing to tolerate a 5% chance of making a Type I error.
Assuming a significance level of α = 0.05, if we repeated the test 1000 times, we would expect to make a Type I error in approximately 50 tests (0.05 x 1000 = 50). This means that in 50 out of the 1000 tests, we would reject the null hypothesis even though it is actually true.
However, it is important to note that the actual number of Type I errors we make in practice may differ from our expectation, as it depends on the specific characteristics of the population being tested and the sample sizes used in each test.
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[y=-z+2
y=-2²+z+1
Which ordered pair is the solution of the system?
The graph shows the system
0 (0, 2)
O (1,2)
(1,1)
(0, 1)
+
Therefore , the solution of the given problem of ordered pair comes out to be the ordered pair (1, 1/2).
What exactly are ordered pairs?"Ordered pairs" are two separate variables that are arranged in a way that suggests a specific sequence. The coordinates for x and y in an order pair are represented, respectively, by the main and second components. The sample following uses close parentheses to indicate the ordered combination.
Here, The formulae are as follows:
=>y = -z + 2 ...(1)
=> y = -2x² + z + 1 ...(2)
Equation (1) can be substituted for equation (2) to find the value of z:
=> Z = x² + 1/2 - z + 2 = -2x² + z + 1
=> 2z = 2x² + 1
We can now enter this value of z into equation (1) and find the value of y:
=> y = -z + 2
=> y = -(x² + 1/2) + 2
=> y = -x² + 3/2
As a result, the equation system can be expressed as:
=> z = x² + 1/2
=> y = -x² + 3/2
When x=0:
=> z = 0² + 1/2 = 1/2
=> y = -0² + 3/2 = 3/2
Therefore, there is no answer for the ordered pair (0, 3/2).
When x=1:
=> z = 1² + 1/2 = 3/2
=> y = -1² + 3/2 = 1/2
The answer is the ordered pair (1, 1/2).
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165. 1% of 384. 7. Round to the nearest thousandth
Rounding to the nearest thousandth means rewrite the number and deleting all digits to the right of the rounded number. The percentage value for 165.1% of 384.7 is equals to the 42.917%.
In mathematics, a percentage is a number that represents a fraction of hundred. We have to calculate the value of 165.1% of 384.7. Percentage solution with steps:
Step 1: We make the assumption that 384.7 is 100% since it is our output value.
Step 2: We next represent the value we need with x. From step 1, it follows that 100% = 384.7.
Step 3: In the same sense, x% = 165.1.
Step 5: Now, we have a pair of simple equations:
100% = 384.7 --(1).
x% = 165.1 ---(2).
Step 6: By simply dividing equation (1) by equation 2 and taking note of the fact that both the LHS (left hand side) of both equations have the same unit (%); we have 100% /x% = 384.7/165.1.
Step 7: Taking the inverse or reciprocal in both sides, x% / 100% = 165.1/384.7
=> x = ( 165.1/384.7) × 100
=> x = 42.91655835716 ~ 42.917 (round to the nearest thousandth). Therefore, 165.1 is 42.917% of 384.7.
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Can anybodyhelp me with these please? I need help please!
1: The measure of arc JML is: arc JML = 176°
3: m∠WXY = 59°
5: The measure of the arc is: arc FE = 54°
7: The measure of the angles are: m∠A = 79° and m∠B = 112°
9: The value of x is: x = 9
How to find the angle or arc measure in a circle?
No. 1
The measure of inscribed angle is half the measure of its intercepted arc. That is:
∠ JKL = 1/2 * arc JML
88 = 1/2 * arc JML
arc JML = 2 * 88
arc JML = 176°
No. 3
arc WY = 360 - 86 - 156 = 118° (sum of angles in a circle)
m∠WXY = 1/2 * arc WY
m∠WXY = 1/2 * 118
m∠WXY = 59°
No. 5
An angle inscribed in a semicircle is a right angle. Thus, m∠DFE = 90°
m∠EDF = 180 - 90 - 63 = 27° (sum of angles in a triangle)
m∠EDF = 1/2 * arc FE
27° = 1/2 * arc FE
arc FE = 2 * 27
arc FE = 54°
No. 7
The opposite angle in a cyclic quadrilateral add up to 180°. That is:
m∠A + m∠C = 180°
m∠A + 101 = 180
m∠A = 180 - 101
m∠A = 79°
m∠B + m∠D = 180°
m∠B + 68 = 180
m∠B = 180 - 68
m∠B = 112°
No. 9
67 = 1/2 * (16x - 10)
67 * 2 = (16x - 10)
16x - 10 = 134
16x = 134 + 10
16x = 144
x = 144/16
x = 9
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WILL MARK BRAINLIEST!!!
PLEASE HELP!
Write Tan A and Tan B
Answer:
Hope this is what you were looking for :)
Step-by-step explanation:
tan = opposite/adjacent
IF YOU DONT NEED TO FIND THE VALUES OF THE SIDES:
tan A = [tex]\frac{x}{11}[/tex]
tan B = [tex]\frac{11}{x}[/tex]
Replace the x for whatever the value of BC is or if it doesn't have a value, you can just leave it as x.
IF YOU DO NEED TO FIND THE VALUES OF THE SIDES:
tan 45 = 1
tan 45 = [tex]\frac{BC}{11}[/tex]
(11) tan 45 = BC
BC = 11
tan 45 = [tex]\frac{11}{AC}[/tex]
AC = [tex]\frac{11}{tan 45}[/tex]
AC = 11
This can also be done without using tangent from taking a look at special right triangles.
In 45-45-90 triangles, the two legs are the same size while the hypotenuse is equal to one of the legs multiplied by [tex]\sqrt{2}[/tex]. In doing this, we can find that both legs are 11 and the hypotenuse is [tex]11\sqrt{2}[/tex].
Jordan wrote the following descirption: three fewer than one fourth of x is 12. write an equation to represent the description.
Answer:
1/4x - 3 = 12
Step-by-step explanation:
You know you have 1/4x and need to take three from it to equal 12
a coin is flipped 6 times. if more heads are flipped than tails, the probability that all 6 are heads is , what is the value of ?
The probability that all 6 flips result in heads is 1/64
The given coin is flipped 6 times. The number of heads and tails could vary from 0 to 6.Let H be the number of heads and T be the number of tails. Then the possible values of H and T are, H=0 and T=6 H=1 and T=5 H=2 and T=4 H=3 and T=3 H=4 and T=2 H=5 and T=1 H=6 and T=0
For the given question, it is given that more heads are flipped than tails.So the possible values of H are 4, 5 and 6.So the total number of possible outcomes with more heads than tails is the sum of the possible outcomes with 4, 5 and 6 heads which is, 1+6+15 = 22 (from the combinations formula)Now, the probability that all 6 flips result in heads, given more heads are flipped than tails is,
P(all 6 are heads) = P(H > T) × P(all 6 are heads | H > T)P(H > T) = 22/64
P(all 6 are heads | H > T) = 1/21 (there is only one possibility where all 6 flips are heads)
P(all 6 are heads) = P(H > T) × P(all 6 are heads | H > T) = (22/64) × (1/21) = 1/64
Therefore, the probability that all 6 flips result in heads, given more heads are flipped than tails is 1/64.
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y < 2x + 3
x+y≥ 3
x < 4
Write an ordered pair that is a solution to the systems.
The solution to the system of equations is (2, 1). To find this solution, we must first solve the first equation, Y < 2x + 3, for x.
What is subtracting?Subtracting involves taking the difference between two numbers. It is the opposite of addition and is represented by the '-' sign.
We can do this by subtracting 3 from both sides of the equation, which gives us Y - 3 < 2x.
We then divide both sides of the equation by 2, which gives us
Y - 3/2 < x.
Next, we must solve the second equation, x + y ≥ 3, for y. To do this, we subtract x from both sides of the equation, which gives us y ≥ 3 - x.
Finally, we must set both equations equal to each other,
Y - 3/2 = 3 - x.
We can then solve for x by adding 3/2 to both sides of the equation, which gives us
x = 2.5.
We can then plug this value for x into the second equation, which gives us y ≥ 3 - 2.5.
We then solve for y by subtracting 2.5 from both sides of the equation, which gives us y = 0.5.
Since the value for x must be less than 4, we must round down the value of x to 2. This means that the solution to the system of equations is (2, 1).
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If f(x) is a function and f(1) = 5, then which of the following could not be true?
If f(x) is a functiοn and f(1) = 5, then f(1) = 1 cοuId nοt be true.
Thus οptiοn a is cοrrect.
Define functiοn.A functiοn is a reIatiοn between twο sets, caIIed the dοmain and the range, such that fοr each eIement in the dοmain, there is exactIy οne eIement in the range. A functiοn maps each eIement in the dοmain tο a unique eIement in the range.
In οther wοrds, a functiοn is a ruIe οr a fοrmuIa that assοciates each input vaIue with a unique οutput vaIue. The input vaIues are the dοmain οf the functiοn, and the οutput vaIues are the range. Functiοns are οften denοted by a symbοI such as f(x), where x is an eIement in the dοmain and f(x) is the cοrrespοnding eIement in the range.
In mathematicaI anaIysis, the generaI cοncept οf functiοn, appIicatiοn οr mapping refers tο a ruIe that assigns tο each eIement οf a first set a singIe eIement οf a secοnd set.
Using this definitiοn, severaI eIements οf the dοmain can resuIt in the same eIement οf the range οf the functiοn.
But, the same eIement οf the dοmain, can nοt have different vaIues οf the range οf the functiοn.
Therefοre, the fοIIοwing expressiοn can nοt be true:
f (1) = 1
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Complete Question:
If f(x) is a function and f(1) = 5, then which of the following could not be true?
a. f(1) = 1
b. f(2) = 1
c. f(5) = 5
Ousmane envoie une carte a Arnaud par pigeon voyageur. Le pigeon vole a une vitesse de 84km/h et met 1h45 à délivrer la lettre. A quelle distance Arnaud et Ousmane vivent-ils l'un de l'autre ?
On peut commencer par utiliser la formule suivante pour calculer la distance parcourue par le pigeon voyageur :
distance = vitesse x temps
où la vitesse est donnée en km/h, le temps en heures et la distance en km.
Dans ce cas-ci, la vitesse est de 84 km/h et le temps de voyage est de 1h45, soit 1.75 heures. On peut donc calculer la distance parcourue par le pigeon :
distance = 84 km/h x 1.75 h = 147 km
Donc, la distance entre Ousmane et Arnaud est de 147 km.
every morning, mr. cross bakes 80 strawberry frosted donuts unless there is a special order. each donut costs $3 to make, and is sold for $5; unsold donuts are given away to a charity at the end of the day, at a discounted price of $1.50.
Every morning, Mr. Cross bakes 80 strawberry frosted donuts unless there is a special order. Each donut costs $3 to make, and it is sold for $5. Unsold donuts are given away to a charity at the end of the day, at a discounted price of $1.50. What will be Mr. Cross’s total earnings if he sells all 80 donuts?
Total revenue if all 80 donuts are soldRevenue = Total units sold × Selling price per unitSince there are 80 donuts and each donut costs $5,Total revenue if all 80 donuts are sold = 80 × 5 = $400Total cost if all 80 donuts are soldTotal cost of making all 80 donuts = Cost of one donut × Total units madeSince each donut costs $3,Total cost of making all 80 donuts = 3 × 80 = $240Total profitTotal profit = Total revenue - Total cost
Since revenue is $400 and the total cost is $240,Total profit = 400 - 240 = $160At the end of the day, unsold donuts are given away to charity at a discounted price of $1.50 each. Therefore, Mr. Cross’s total earnings would be $160 if he sold all 80 donuts.
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The relation between hours studied and LSAT scores in a random sample of students is found to be S = 130 + 2.2h. How will a student’s score be affected if she studies for 10 hours?
Answer:
We can use the given equation to find the expected LSAT score (S) for a student who studies for 10 hours:
S = 130 + 2.2h
S = 130 + 2.2(10)
S = 130 + 22
S = 152
Therefore, if a student studies for 10 hours, we would expect her LSAT score to be 152.
you are making cookies and missing a key ingredient eggs. you have most of the other ingredients, except you only have 1.33 cups of butter. the recipe calls for two cups of butter and three eggs to make six dozen cookies. how many eggs do you need use all of the butter?
By using equation in two variable we need to use 2 eggs to make all the cookies with 1.33 cups of butter.
To make six dozen cookies, the recipe calls for two cups of butter and three eggs. We can use proportionality to solve this question: If 2 cups of butter require 3 eggs to make 6 dozen cookies, then 1.33 cups of butter require x eggs to make all of the cookies.
x eggs = (1.33 cups of butter x 3 eggs)/(2 cups of butter). x = 1.99 eggs. Since we cannot use .99 eggs to make cookies, we would need to round up to the nearest whole number of eggs.
Therefore, we need to use 2 eggs to make all the cookies with 1.33 cups of butter.
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Sophie has a small cube-shaped box. Its volume is 64 cubic centimeters.
What is the area of one face of the box?
Answer:
The answer to your problem is, [tex]16cm^{2}[/tex]
Step-by-step explanation:
Sophie has a small cube shaped box.
Volume of the box is [tex]64cm^{3}[/tex]
We have to find the area of one face of the box.
Let one side of the box is x
Then volume = [tex]x^{3}[/tex] = 64
x³ = 4³
= 4
Now area of one face of the cube = x²
then area = 4² = 16 cm²
Thus the answer to your problem is, [tex]16cm^{2}[/tex]
in a certain large city, 45% of families earn less than $35,000 per year. assuming the distribution is binomial and you can use the exact binomial calculation, what's the probability that a simple random sample of 30 families will have 10 or fewer families earning less than $35,000 per year?
The probability of obtaining 10 or fewer families earning less than $35,000 per year in a simple random sample of 30 families from a large city with 45% of families in that income bracket is approximately 0.041 or 4.1%.
We can use the binomial distribution formula to calculate the probability of obtaining 10 or fewer families earning less than $35,000 per year in a simple random sample of 30 families from a large city where 45% of families earn less than $35,000 per year.
Let's denote the probability of a family earning less than $35,000 per year as "p", which is 0.45 in this case, and the number of trials or families sampled as "n", which is 30 in this case.
The probability of obtaining k families earning less than $35,000 per year in a simple random sample of 30 families can be calculated using the binomial distribution formula:
P(X ≤ 10) = Σ(i=0 to 10) [n choose i] * p^i * (1-p)^(n-i)
where n = 30, p = 0.45, and X is the random variable representing the number of families earning less than $35,000 per year in the sample.
Using a binomial calculator or software, we can calculate:
P(X ≤ 10) ≈ 0.041
Therefore, the probability that a simple random sample of 30 families will have 10 or fewer families earning less than $35,000 per year is approximately 0.041 or 4.1%.
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A bag has 11 blue cubes, 6 red cubes, and 8 green cubes. If you draw a cube and replace it in the bag 200 times, which of the following amounts would you expect to pull? Select all that apply.
A) Pull a blue cube 88 times
B) Pull more red cubes than blue cubes
C) Pull a green cube 64 times
D) Pull a blue cube 150 times
E) Pull a red cube 10 times
Option E is incorrect in light of the provided assertion, and only options A,B,C, and D are acceptable.
What fundamentals of probability are there?Probability is simply the chance that something will happen. We can discuss the likelihood of various outcomes when we are unable to foresee how an incident will unfold.
The probability of drawing a blue cube is 11/25, the probability of drawing a red cube is 6/25, and the probability of drawing a green cube is 8/25. Since we are replacing the cube after each draw, each draw is independent and follows the same probability distribution.
To find the expected number of times we would pull a certain color cube, we can simply multiply the probability of drawing that color cube by the total number of draws:
Expected number of blue cube draws: (11/25) x 200 = 88 times. So option A is correct.
The probability of drawing more red cubes than blue cubes is a bit more complicated to calculate, but it can be done by summing the probabilities of drawing 0, 1, 2, 3, 4, 5, or 6 blue cubes and 6, 5, 4, 3, 2, 1, or 0 red cubes. However, it is easier to notice that the probability of drawing more red cubes than blue cubes is the same as the probability of drawing more blue cubes than red cubes, which is 1/2 since both events are equally likely. Therefore, option B is correct.
Expected number of green cube draws: (8/25) x 200 = 64 times. So option C is correct.
Expected number of blue cube draws: (11/25) x 200 = 88 times. So option D is correct.
Expected number of red cube draws: (6/25) x 200 = 48 times. So option E is not correct since it expects less than 48 red cube draws.
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If the function, g(x), has the ordered pairs (-4, 15), (-2, 3), and (0, -1), fill in the ordered pairs that know exist on the graph of g−1(x)
Answer:
(15, - 4 ) , (3, - 2 ) , (- 1, 0 )
Step-by-step explanation:
given a point (x, y ) on a function f(x) , then the corresponding point on the inverse function is (y, x )
given the points on g(x) , then the corresponding points on [tex]g^{-1}[/tex] (x) are
(- 4, 15 ) → (15, - 4 )
(- 2, 3 ) → (3, - 2 )
(0, - 1 ) → (- 1, 0 )
Property taxes on homes decreased this year by an average of $75. 90 in Silvertown. There are 270 homes in Silvertown. Which describes the change in Silvertown’s revenue from last year to this year?
The change in Silvertown’s revenue from last year to this year can be described by c. 20,493.
Property taxes on homes decreased this year by an average = $75. 90
Total number of homes = 270
It is essential to compare the overall property tax revenue from this year to the total revenue from last year after the $75.90 per-home drop in order to ascertain the change in Silvertown's property tax revenue.
Calculating the total decrease in revenue -
= Average decrease x total number of homes
= 75.90 x 270
= 20,493
Complete Question:
Property taxes on homes decreased this year by an average of $75. 90 in Silvertown. There are 270 homes in Silvertown. Which describes the change in Silvertown’s revenue from last year to this year?
a. - 21,093
b. - 20, 493
c. 20,493
d. 21930
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Pls just say a b c or d
Answer:
c
Step-by-step explanation: