Answer:
So it's a big probability it's a 6 in 4 chance though. 6 is for users that are careful and 4 for users that aren't that careful.
Step-by-step explanation:
The required probability is 0.981 that at least one of them is careful about personal information.
What is the Binomial Theorem?The binomial theorem states the principle for expanding the algebraic expression (x + y)ⁿ and describes it as the total of the phrases involving the unique exponents of the x and y variables. Each word in a binomial expansion has a coefficient, which is a numerical value.
According to a survey, 63% of Internet users are more cautious about their personal information when using a public Wi-Fi hotspot.
Four randomly selected Internet users, at least one is more careful about their personal information.
As per the given question,
Here, n = 4, p = 0.63, (1 - p) = 0.37 and x = 0
As per binomial distribution formula P(X = x) = nCx × p^x × (1 - p)^(n - x)
P(X = 0) = 4C0 × 0.63^0 × 0.37^4
P(X = 0) = 0.0187
P(X ≥ 1) = 1 - 0.0187
Apply the subtraction operation, and we get
P(X ≥ 1) = 0.981
Thus, the required probability is 0.981 that at least one of them is careful about personal information.
Learn more about the binomial theorem here:
brainly.com/question/27813780
#SPJ2
help plsssssssssssss
Answer:
with what
Step-by-step explanation:
Answer:
help with? there's nothing there
A couple goes to a restaurant for dinner. Below is a probability table in which X is the
amount (dollars) on the meal spent by the husband and Y is the amount spent by the
wife.
X = 15
X = 20
X = 25
Y = 15
0.20
0.15
0.05
Y = 20
0.15
0.15
0.10
Y = 25
0.05
0.10
0.05
a. (7 pts) What is the probability that this couple spends 45 dollars or more?
b. (7 pts) Suppose that the restaurant is currently running a promotion with a
10% discount if the total amount spent by a table is 45 dollars or more.
What is expected total amount the couple actually has to pay?
Using the probability table, it is found that:
a) There is a 0.25 = 25% probability that this couple spends 45 dollars or more.
b) The expected amount the couple actually has to pay is $36.85.
From the table, the probabilities of each total cost are:
[tex]P(X = 30) = P(X = 15|Y = 15) = 0.2[/tex]
[tex]P(X = 35) = P(X = 15|Y = 20) + P(X = 20|Y = 15) = 0.15 + 0.15 = 0.3[/tex]
[tex]P(X = 40) = P(X = 15|Y = 25) + P(X = 20|Y = 20) + P(X = 25|Y = 15) = 0.05 + 0.15 + 0.05 = 0.25[/tex]
[tex]P(X = 45) = P(X = 20|Y = 25) + P(X = 25|Y = 20) = 0.1 + 0.1 = 0.2[/tex]
[tex]P(X = 50) = P(X = 25|Y = 25) = 0.05[/tex]
Item a:
This probability is:
[tex]P(X \geq 45) = P(X = 45) + P(X = 50) = 0.2 + 0.05 = 0.25[/tex]
There is a 0.25 = 25% probability that this couple spends 45 dollars or more.
Item b:
The expected value is the sum of each outcome multiplied by it's respective probability.
For X = 45 and X = 50, the value is multiplied by 0.9, due to the discount.Hence:
[tex]E(X) = 0.2(30) + 0.3(35) + 0.25(40) + 0.9[0.2(45) + 0.05(50)] = 36.85[/tex]
The expected amount the couple actually has to pay is $36.85.
A similar problem is given at https://brainly.com/question/24855677
Xy3-9xyz2 is my math problem and I need help with the complete breakdown
(x • (y³)) - 32xyz²
Pull out like factors :
xy³ - 9xyz² = xy • (y² - 9z²)
Factoring: y² - 9z²
Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)
Proof : (A+B) • (A-B) =
A² - AB + BA - B² =
A² - AB + AB - B² =
A² - B²
Note : AB = BA is the commutative property of multiplication.
Note : - AB + AB equals zero and is therefore eliminated from the expression.
Check : 9 is the square of 3
Check : y² is the square of y¹
Check : z² is the square of z¹
Factorization is : (y + 3z) • (y - 3z)
Final result :
xy • (y + 3z) • (y - 3z)
andi did a test. the test had 20 questions. for each correct answer he gains 5 points and if he errs he loses 2 points. andy answers the questions and at the end is evaluated with 51 points. what is the number of his correct answers?
Answer:
10.2
Step-by-step explanation:
because 51 divide by 5 is 10.2 i am not sure
Micah earns 2 points for every 3 questions he answers correctly on a test. If he answered 24 questions correctly, how many points did he earn?
Answer:
16 points.
Step-by-step explanation:
24*2/3 = 16.
Hope this helped!
*Sorry if I'm wrong, though I think I'm correct.*
Enjoy the rest of your day.
Answer:16
Step-by-step explanation: 24 divided by 3 because it is for every 3 questions. You get 8. He gets 2 points for every 3 questions so 8 times 2 is 16.
SOMEONE HELP ME WITH THIS PLS
Answer:
D
Step-by-step explanation:
You add the "columns." The equations are arranged so that like terms are stacked vertically. 3x and 7x are like terms; when you add them, you get 10x.
-y and y are like terms; when you add them, you get 0 (that doesn't appear in the sum).
-5 and 15 are like terms; add them to get 10.
The sum of the two equations is the equation 10x = 10.
pleaseeeeeeeeeeeeeeeeeeee help
Answer:
x|x∈R(all real numbers)
y|y∈R(all real number)
Yes its is
Hope This Helps!!!
(2m-3)(2m+3)(4m^2+9)
Answer:
16[tex]m^{4}[/tex]−81
Step-by-step explanation:
Hope this is correct and it helps :)
The initial population of a town is 3500, and it grows with a doubling time of 10 years. What will the population be in 8 years?
Answer:
8 years = 5600
Step-by-step explanation:
10 years = 3500x2= 7000
1 year = 7000/10 = 700
1 year = 700
8 years = 700x8 = 5600
Isaiah has a points card for a movie theater.
He receives 75 rewards points just for signing up.
He earns 6.5 points for each visit to the movie theater.
He needs at least 140 points for a free movie ticket.
Write and solve an inequality that can be used to determine xx, the number of visits Isaiah can make to earn his first free movie ticket.
Inequality =
x - and _
Answer:
654
Step-by-step explanation:
You need to times the first 2 numbers nad then after that that you divide and then walaa ANSWER: 654
בוoit
Christina has these two tiles. Draw a new shape she can create with both tiles. Then name the shape and how many sides the new shape has.
Square and triangle
Answer:
quadangle
Step-by-step explanation:
a square made of triangles and If a triangle is called a triangle, why is a square not called a quadangle?
Squares and triangles can be combined to form a pentagon
The new shape is a pentagon.The shape has 5 sides.The two shapes are given as:
SquareTriangleWhere the base of the square equals the side length of the triangle
When these shapes are combined i.e. when the base of the triangle is merged with the side length of the square, then it forms a pentagon.
See attachment for the image of the new shape.
From the attached image, we can see that the shape has 5 sides
Read more about pentagons at:
https://brainly.com/question/9317617
what is the answer to 6- (2)(3) and how would i solve it?
Answer: 0
Step-by-step explanation: 6-(2)(3) 6-6 0
Plot two numbers on the numberline that are 7 units from 3
Is this correct?
Answer:
-4 and 10
Step-by-step explanation:
It is 7 units from 3 not 3 the number itself
Answer:
Half correct.
Step-by-step explanation:
Option B is correct 3 + 7 = 10
Option A is incorrect. Should be 3 - 7 = - 4
write an expression for "f increased by 3"
Answer:
f+3
incresed means +
Answer:
The expression for 'f increased by 3' will be f+3.
Step-by-step explanation:
This means that 3 will be added to 'f'. Since, 'f' is a variable and '3' is a numeral, therefore they cannot be added. The expression for it will be f+3.
Have a great day! :D
Given that 27^1/3= 9^14 + 3^x+1
find the exact value of x
If the given equation is
[tex]27^{\frac13} = 9^{14} + 3^{x + 1}[/tex]
first simplify the left side using the fact that 27 = 3³:
[tex]27^{\frac13} = (3^3)^{\frac13} = 3^{\frac33} = 3^1 = 3[/tex]
and on the right side, 9 = 3²:
[tex]9^{14} = (3^2)^{14} = 3^{2\times14} = 3^{28}[/tex]
So we have
[tex]3 = 3^{28} + 3^{x + 1}[/tex]
Next,
[tex]3^{x+1} = 3^x \times 3^1 = 3 \times 3^x[/tex]
so that
[tex]3 = 3^{28} + 3 \cdot 3^x[/tex]
and dividing both side by 3 gives
[tex]1 = 3^{27} + 3^x[/tex]
Isolate 3ˣ :
[tex]3^x = 1 - 3^{27}[/tex]
Solve for x by taking the base-3 logarithm of both sides:
[tex]\log_3(3^x) = \log_3(1-3^{27})[/tex]
[tex]x \log_3(3) = \log_3(1-3^{27})[/tex]
[tex]\boxed{x = \log_3(1-3^{27})}[/tex]
Which two triangles are congruent by the SAS Theorem?
Answer:
triangle ABC and triangle HFG, I know it is filled out as DCE, but I don't see any triangle DCE
Step-by-step explanation:
check the sides and the angles
On a recent vacation to the Philippines, Sama bought milk from two different stores. What is the difference in price between the two-unit rates for each carton of milk?
and
Derrick earns $14 per hour working at Pizza Palace. What will Derrick's new hourly rate be after a 4.5% raise.
Please solve this correctly. I will give Brainliest.
Answer:
yes because that are true
Given the following list of data, what is the five-number summary?
10, 12, 13, 13, 14, 16, 16, 18, 18, 18, 18
Coach Eddie ordered baseball gloves 30% of them were left handed. If 24 gloves were left handed, how many total gloves are there
Answer:
sorry I don't understand
The graphs of f(x) = 3x − 2 and g(x) = 2(1.2)x are shown here. Select the table that correctly shows the most accurate approximate value of x for f(x) = g(x).
Graph of functions attached
x=0.33Select all the correct answers.
Which statements are true about function g?
Answer:
i need the question
Step-by-step explanation:
Help help help math help please
Answer:
x + 15
Step-by-step explanation:
9x + 25 + x + 5 = 180
9x + x + 25 + 5 = 180
10x + 30 = 180
10x = 180 - 30
10x = 150
x = 150÷10
x = 15.
Kendrick bought a laundry hamper online. It cost $9 plus 10% shipping and handling. What was the total cost?
Work Shown:
10% of $9 = 0.10*9 = 0.90
The shipping cost is $0.90, or 90 cents.
This means the total cost goes from $9 to $9.90
What is the domain of f(x)=(1/4)^x?
A. y > 0
B. x < 0
C. x > 0
D. All real numbers
[tex] \huge \bf༆ Answer ༄[/tex]
The domain of given function is All real numbers
[tex] \sf \: f(x) = { \bigg( \dfrac{1}{4} \bigg) }^{x} [/tex]
For each value of x the function is defined.
Example -
For x = 1The value is [tex] \sf\frac{1}{4}[/tex]
For x = -1The value is 4
[tex]꧁ \: \large \frak{Eternal \: Being } \: ꧂[/tex]
(x-3)(2x+1) Can someone help me on this please
see image above ^^^^
Answer: A reflection, and then a translation.
If M is the midpoint of JK and N is the midpoint of JL, find the value of x.
Answer options:
11
13
9
12
10
Answer:10
Step-by-step explanation:
These triangles are similar select all equations that could be used to solve for the side indicated by the?
Answer:
➟ Two triangles are similar then ratio of their corresponding sides are equal.
(Option 3 is correct)
★ Criteria for similarity of two triangles
i.) Their corresponding angles are equal.
ii.) Their corresponding sides are proportional.
∆ABC ~ ∆DEF only if
∠A = ∠D
∠B = ∠E
∠C = ∠F
and
AB/DE
BC/EF
CA/FD
[ Some theorems ]
AAA - similarity
AA - similarity
SSS - similarity
SAS - similarity
Step-by-step explanation:
how to find the volume of an oven with the inside dimensions 3 ft by 1.5 ft by 3 ft
9514 1404 393
Answer:
13.5 ft³
Step-by-step explanation:
The volume of a cuboid is the product of its length, width, and height:
V = (3 ft)(1.5 ft)(3 ft) = 13.5 ft³
The volume of the oven is 13.5 ft³.
__
You may see this as the formula ...
V = LWH
My kid already tried 3x7x7x7x7 = 3 x 7 to the power of 4 but it says it’s wrong, help please!
Answer:
[tex]7^{4} * 3[/tex]
Step-by-step explanation: