The margin error E at a 90% confidence level is approximately 0.584.
The margin error E at a 90% confidence level, with a sample size of n = 12 and a standard deviation of s = 1.23, can be calculated as follows:
The formula for calculating the margin of error (E) at a specific confidence level is given by:
E = z * (s / √n)
Where:
- E represents the margin of error
- z is the z-score corresponding to the desired confidence level
- s is the sample standard deviation
- n is the sample size
To calculate the margin error E for a 90% confidence level, we need to find the z-score associated with this confidence level. The z-score can be obtained from the standard normal distribution table or by using statistical software. For a 90% confidence level, the z-score is approximately 1.645.
Plugging in the values into the formula, we have:
E = 1.645 * (1.23 / √12)
≈ 1.645 * (1.23 / 3.464)
≈ 1.645 * 0.355
≈ 0.584
Therefore, the margin error E at a 90% confidence level is approximately 0.584.
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Max Z = 5x1 + 6x2
Subject to: 17x1 + 8x2 ≤ 136
3x1 + 4x2 ≤ 36
x1 ≥ 0 and integer
x2 ≥ 0
A) x1 = 5, x2 = 4.63, Z = 52.78
B) x1 = 5, x2 = 5.25, Z = 56.5
C) x1 = 5, x2 = 5, Z = 55
D) x1 = 4, x2 = 6, Z = 56
The option B) yields the highest value for Z, which is 56.5. Therefore, the correct answer is B) x1 = 5, x2 = 5.25, Z = 56.5
To determine the correct answer, we can substitute each option into the objective function and check if the constraints are satisfied. Let's evaluate each option:
A) x1 = 5, x2 = 4.63, Z = 52.78
Checking the constraints:
17x1 + 8x2 = 17(5) + 8(4.63) = 85 + 37.04 = 122.04 ≤ 136 (constraint satisfied)
3x1 + 4x2 = 3(5) + 4(4.63) = 15 + 18.52 = 33.52 ≤ 36 (constraint satisfied)
B) x1 = 5, x2 = 5.25, Z = 56.5
Checking the constraints:
17x1 + 8x2 = 17(5) + 8(5.25) = 85 + 42 = 127 ≤ 136 (constraint satisfied)
3x1 + 4x2 = 3(5) + 4(5.25) = 15 + 21 = 36 ≤ 36 (constraint satisfied)
C) x1 = 5, x2 = 5, Z = 55
Checking the constraints:
17x1 + 8x2 = 17(5) + 8(5) = 85 + 40 = 125 ≤ 136 (constraint satisfied)
3x1 + 4x2 = 3(5) + 4(5) = 15 + 20 = 35 ≤ 36 (constraint satisfied)
D) x1 = 4, x2 = 6, Z = 56
Checking the constraints:
17x1 + 8x2 = 17(4) + 8(6) = 68 + 48 = 116 ≤ 136 (constraint satisfied)
3x1 + 4x2 = 3(4) + 4(6) = 12 + 24 = 36 ≤ 36 (constraint satisfied)
From the calculations above, we see that options B), C), and D) satisfy all the constraints. However, option B) yields the highest value for Z, which is 56.5. Therefore, the correct answer is: B) x1 = 5, x2 = 5.25, Z = 56.5.
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Pleasseee I’ll give BRAINLIEST
Answer:
It’s the third option
Step-by-step explanation:
Cuz 4^2 - 2^2 equals the third option
Suppose two utilites, People's Electric and Muricipal Energy, each produce 900 tons of pollution per year. The government has a goal of eliminating haf the pclution, and, in turn, provides 450 pollution permits to each utlity. A pollution permit is required to legally produce a ton of poliubon. However, the tao utities are allowed to trade permas. Suppose the cost of eliminating one ton of pollution for People's Electric is $400 and the cost of eliminating a ton of polution for Municipal Energy is $350. The total cost of each utility eliminating 450 tons of pollution is $ (Enter your response as a whole number)
The total cost of each utility eliminating 450 tons of pollution is $180,000.
To calculate the total cost for each utility to eliminate 450 tons of pollution, we need to multiply the cost per ton of pollution elimination by the number of tons each utility needs to eliminate.
For People's Electric, the cost of eliminating one ton of pollution is $400. So, to eliminate 450 tons, the total cost would be 450 tons * $400/ton = $180,000.
For Municipal Energy, the cost of eliminating one ton of pollution is $350. Again, to eliminate 450 tons, the total cost would be 450 tons * $350/ton = $157,500.
Therefore, the total cost for each utility to eliminate 450 tons of pollution is $180,000 for People's Electric and $157,500 for Municipal Energy.
The cost calculation is based on the given information that each utility is provided with 450 pollution permits by the government. These permits allow them to legally produce a ton of pollution. By setting a limit on the number of permits, the government aims to reduce pollution by half. The utilities have the option to trade permits with each other.
In this scenario, People's Electric has a higher cost of eliminating pollution per ton compared to Municipal Energy ($400 vs. $350). It means that People's Electric would find it more expensive to reduce pollution through internal measures like investing in cleaner technology or implementing environmental initiatives. On the other hand, Municipal Energy has a lower cost, indicating that they have relatively more cost-effective methods for pollution reduction.
Given these costs, it is more beneficial for People's Electric to purchase permits from Municipal Energy rather than eliminating the pollution themselves. By purchasing permits, People's Electric can meet the pollution reduction target at a lower cost. Conversely, Municipal Energy can generate additional revenue by selling their permits.
This permit trading mechanism allows for cost efficiency in achieving the government's pollution reduction goal. The total cost for each utility is determined by multiplying the cost per ton of pollution elimination with the number of tons they need to eliminate.
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Ashley saves eleven dollars more than one-fourth of her paycheck every month. Connor saves seven dollars less than three-eighths of his paycheck every month. How much more would Connor and Ashley need to make to have the same amount saved?
The amount Connor and Ashley need to make to have the same amount saved is $144
SavingsLet
Amount of paycheck = xAshley:
1/4x + 11
Connor:
3/8x - 7
Equate both savings1/4x + 11 = 3/8x - 7
11 + 7 = 3/8x - 1/4x
18 = (3x-2x) / 8
18 = 1/8x
x = 18 ÷ 1/8
x = 18 × 8/1
x = $144
Therefore, the amount Connor and Ashley need to make to have the same amount saved is $144
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A polynomial f(x) has a remainder of -2 when divided by (2x + 1). Showing your method clearly,
(i) find the remainder when f(x) - 1 is divided by (2x + 1),
(ii) find in terms of f(x), a polynomial which is completely divisible by (2x + 1).
(i) The remainder when f(x) - 1 is divided by (2x + 1) is R1(x) = f(-1/2) - 1.
(ii) The polynomial which is completely divisible by (2x + 1) in terms of f(x) is P(x) = f(x).
How do we calculate?(i) We apply the Remainder Theorem in order to find the remainder when f(x) - 1 is divided by (2x + 1):
We apply the Remainder Theorem
f(x) - 1 / (2x + 1).
x = -1/2
f(x) - 1 is divided by (2x + 1) as R1(x).
R1(x) = f(x) - 1
We then substitute x = -1/2 into R1(x):
R1(-1/2) = f(-1/2) - 1
(ii) In this case, we apply the factor theorem.
P(x) = f(x) - k(2x + 1)
We Substitute
x = -1/2 into P(x):
P(-1/2) = f(-1/2) - k(2(-1/2) + 1)
P(-1/2) = f(-1/2) - k(0)
P(-1/2) = f(-1/2)
In conclusion, in terms of f(x), the polynomial that is completely divisible by (2x + 1) is P(x) = f(x).
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Five less than the quotient of eighteen and a number n in algebraic expression
The provided sentence "Five less than the quotient of eighteen" is converted into an algebraic expression as 18/x - 5.
What is defined as the algebraic expression?Algebraic expressions are mathematical statements that result from operations on variables and constants including such addition, subtraction, multiplication, and division. We simply combine like terms to explain an algebraic expression. As a result, similar variables will be combined. A same powers will now be combined from the like variables.Five less than the quotient of eighteen and a number
We must convert the provided sentence into an algebraic expression.
Let "x" represent the number.
Therefore,
Five less than that of the quotient of eighteen and "x"
The term quotient refers to the outcome of division.
Therefore,
18/x - 5
That is, Five less than the quotient of eighteen and x.
As a result, the provided sentence is converted into an algebraic expression.
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Evaluate the integral: S1 0 (-x³ - 2x² - x + 3)dx
The integral: S1 0 (-x³ - 2x² - x + 3)dx is -1/12
An integral is a mathematical operation that calculates the area under a curve or the value of a function at a specific point. It is denoted by the symbol ∫ and is used in calculus to find the total amount of change over an interval.
To evaluate the integral:
\($ \int_0^1 (-x^3 - 2x^2 - x + 3)dx $\)
We can integrate each term of the polynomial separately using the power rule of integration, which states that:
\($ \int x^n dx = \frac{x^{n+1}}{n+1} + C $\)
where C is the constant of integration.
So, we have:
\($ \int_0^1 (-x^3 - 2x^2 - x + 3)dx = \left[-\frac{x^4}{4} - \frac{2x^3}{3} - \frac{x^2}{2} + 3x\right]_0^1 $\)
Now we can substitute the upper limit of integration (1) into the expression, and then subtract the result of substituting the lower limit of integration (0):
\($ \left[-\frac{1^4}{4} - \frac{2(1^3)}{3} - \frac{1^2}{2} + 3(1)\right] - \left[-\frac{0^4}{4} - \frac{2(0^3)}{3} - \frac{0^2}{2} + 3(0)\right] $\)
Simplifying:
\($ = \left[-\frac{1}{4} - \frac{2}{3} - \frac{1}{2} + 3\right] - \left[0\right] $\)
\($ = -\frac{1}{12} $\)
Therefore,
\($ \int_0^1 (-x^3 - 2x^2 - x + 3)dx = -\frac{1}{12} $\)
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1) according a survey found 58% of adults enjoy superhero movies. if eight adults are randomly selected, find the probability that a minimum of seven adults enjoy superhero movies.
The probability that a minimum of seven adults enjoy superhero movies is P(X ≥ 7) = P(X = 7) + P(X = 8)
You can calculate the specific values using the formulas and then sum them up to find the probability that a minimum of seven adults enjoy superhero movies out of the random sample of eight adults.
To find the probability that a minimum of seven adults enjoy superhero movies out of a random sample of eight adults, we need to calculate the probability of different scenarios: exactly 7 adults, exactly 8 adults, and add them together.
First, let's calculate the probability that exactly 7 adults enjoy superhero movies. We can use the binomial probability formula:
P(X = k) = C(n, k) * p^k * (1 - p)^(n - k)
Where:
P(X = k) is the probability of getting exactly k successes,
C(n, k) is the combination formula (n choose k),
p is the probability of success (58% or 0.58 in decimal form),
n is the number of trials (8 in this case), and
k is the number of successes (7).
Using the formula, we can calculate:
P(X = 7) = C(8, 7) * 0.58^7 * (1 - 0.58)^(8 - 7)
Similarly, the probability that exactly 8 adults enjoy superhero movies is:
P(X = 8) = C(8, 8) * 0.58^8 * (1 - 0.58)^(8 - 8)
To find the probability of a minimum of seven adults enjoying superhero movies, we add these two probabilities together:
P(X ≥ 7) = P(X = 7) + P(X = 8)
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Use the matrices A and B given below to compute the indicated entries of E=A T
−B. Enter all answers in exact, reduced form. (Answers involving variables are case sensitive.) A= ⎣
⎡
−1
−5q
14m
13
4
8n
⎦
⎤
B=[ −11v
9w
−3
−2r
−14
1
] (a) e 21
= (b) a 31
−b 23
+e 12
=
Given matrix A = [[-1, -5q, 14m, 1348n]] and matrix B = [[-11v, 9w, -3, -2r, -141]], we need to compute the entries of E = A^T - B.
The transpose of matrix A, denoted as A^T, is obtained by interchanging the rows and columns of matrix A. So, A^T = [[-1], [-5q], [14m], [1348n]].
To compute e21, we find the entry at the second row and first column of E, which is obtained by subtracting the corresponding entries of A^T and B. Therefore, e21 = -1 - (-11v) = 11v - 1.
To compute a31 - b23 + e12, we consider the entry at the third row and first column of A^T, subtract b23 from it, and add e12. Thus, a31 - b23 + e12 = 14m - (-3) + (-5q) = 14m + 3 - 5q.
The final answers for (a) e21 and (b) a31 - b23 + e12 are 11v - 1 and 14m + 3 - 5q, respectively, in exact, reduced form.
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The expected attendance at a school event is 65 people. The actual attendance can vary by up to 30 people. Which equation can you use to find the minimum and maximum
attendances?
Answer:
|x-65|=30
Step-by-step explanation:
You are expecting 65 people, but usually 30 people come.
This equation works best since you can find both the minimum and maximum.
The equation can you use to find the minimum and maximum attendances will be |x - 65| = 30.
What is an absolute function?The absolute function is also known as the mode function. The value of the absolute function is always positive.
The absolute function is given as
f(x) = | x |
The expected attendance at a school event is 65 people. The actual attendance can vary by up to 30 people. Then the absolute function of the equation is given as,
|x - 65| = 30
The equation can you use to find the minimum and maximum attendances will be |x - 65| = 30.
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Please help me for brainlyst !!!!!!!!!!!!!!!!
Answer:
the answer is c JUST guessing it might not be correct
{ x + 2y = 8 , x= -5
Step-by-step explanation:
x + 2y = 8 , x= -5
-5 + 2y = 8
add 5 to both sides:
-5 + 2y + 5 = 8 + 5
2y = 8 + 5
2y = 13
divide both sides by 2:
2y/2 = 13/2
y = 13/2 or 6.5
Simplify 3x^3 * 7y^2 * 4x * 5y ^3 using the rules of exponents
Using the rule of exponents, the expression is 12x^4 × 35y^5
What are the rules of exponents?The rules of exponents are given as:
Product of powers rule — When they are like bases, add the powersQuotient of powers rule — When they are like bases dividing, subtract the powersPower of powers rule — Multiply the powers together when a power is raised by another exponent.Given the expression;
3x^3 * 7y^2 * 4x * 5y ^3
collect the like bases
3x³ × 4x × 7y² × 5y³
Add the powers
12x^3 + 1 × 35^ 2 + 3
We then have;
12x^4 × 35y^5
Thus, using the rule of exponents, the expression is 12x^4 × 35y^5
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For a charity event, raffle tickets are printed such that they have a vowel (excluding y) as the first character and a prime number less than 10 as the second digit. (Note that 1 is not a prime number.) The probability that the winning ticket has the vowel contained in the word event and the digit is the number of letters in the word event is
Answer:
P=5%
Step-by-step explanation:
In order to solve this problem, we can use the following formula for the probability of two independent events:
P(A and B)=P(A)*P(B)
so we need to find the probability for each event to happen.
They are asking for the probability that the winning ticket will have the letter e on it. There are 5 vowels in the alphabet (a, e, i, o and u). Therefore the probability for the first letter to be e is:
P (A) = desired/total
P(A) = 15
We also know there are 4 prime numbers between 0 and 10 (2, 3, 5, 7) so the probability for the number to be a 5 is:
P (B) = 1/4
so the probability of getting a ticket that starts with an e and ends with a 5 is:
P(A and B)=P(A)*P(B)
P (AandB) = (1/5) ( 1/4 )
P (AandB) = 1/20
so the probability is 5%
I need help ASAP!!!! No links
Answer:
c
Step-by-step explanation:
A litter of kittens consists of two gray females, one gray male , one black female, and three black males. You randomly pick one kitten. The kitten is gray or male.
Answer:
There is a 3/7 chance for a gray kitten, a 4/7 chance for a male kitten, and a 1/7 chance for a gray male kitten.
Step-by-step explanation:
Total Kittens = 7 (each of the following will be out of the total amount of kittens)
2/7 = Gray Female
1/7 = Gray Male
1/7 = Black Female
3/7 = Black Male
Total Male Kittens = 4/7
Total Gray Kittens = 3/7
The function f(x) = x2 4 is defined over the interval [-2, 2]. if the interval is divided into n equal parts, what is the height of the right endpoint of the kth rectangle?
the height of the endpoint of the kth rectangle equals the heights of the first and kth preceding rectangles.
= -2 +k*(5/n)
What is Coordinate geometry?The study of geometry utilizing coordinate points is referred to as coordinate geometry (or analytic geometry). Finding the distance between two points, dividing lines in the m:n ratio, locating a line's midpoint, and computing the area of a triangle in the Cartesian plane can all be done using coordinate geometry.
The range for the definition of the function f(x) = x^2 + 4 is (-2, 2).
Between this interval, there are a total of 5 equal pieces.
Height of each rectangle's right endpoint equals if the interval is divided into n equal pieces. k=(5/n)
Therefore, the height of the endpoint of the kth rectangle equals the heights of the first and kth preceding rectangles.
= -2 + k*(5/n)
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Solve each equation. Check for extraneous solutions. √2 x+9 - √x=3
the extraneous solution for the equation √(2 x +9) - √x = 3 is x = 0 or x = 6.
We are given an equation:
√(2 x +9) - √x = 3
√(2 x +9) = 3 + √x
Raise both sides to the power 2, we get that:
2 x + 9 = 9 + x + 6√x
x = 6√x
Squaring both sides again, we get that:
x² = 6 x
x² - 6 x = 0
x ( x - 6) = 0
x = 0 or x = 6.
Therefore, we get that, the extraneous solution for the equation √(2 x +9) - √x = 3 is x = 0 or x = 6.
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Add/Subtract Rational Numbers :
Add ; -1/2 + 2/3 (Simplify)
Evaluate ; -1/8 - (-5/6) (Simplify)
Find the mean.
20, 5, 45, 90, 60, 45, 30, 10, 20, 45, 15,25
Answer:
34.166
Step-by-step explanation:
Mean=(Sum of all the numbers)/12=410/12=34.166
\(\huge\textsf{Hey there!}\)
\(\bullet \large\textsf{ Finding the mean you have to add up all of your numbers \& divide it}\\\large\textsf{by the total numbers in your data plot}\)
\(\mathsf{\dfrac{20 + 5 + 45 + 90 + 60 + 45 + 30 + 10 + 20+ 45 + 15 + 25}{12}}\)
\(\mathsf{20 + 5 + 45 + 90 + 60 + 45 + 30 + 10 + 20+ 45 + 15 + 25}\)
\(\mathsf{= 25 + 45 + 90 + 60 + 45 + 30 + 10 + 20 + 45 + 15 + 25}\)
\(\mathsf{= 70 + 90 + 60 + 45 + 30 + 10 + 20 + 45 + 15 + 25}\)
\(\mathsf{= 160 + 60 + 45 + 30 + 10 + 20 + 45 + 15 + 25}\)
\(\mathsf{= 220 + 45 + 30 + 10 + 20 + 45 + 15 + 25}\)
\(\mathsf{= 265 + 30 + 10 + 20 + 45 + 15 + 25}\)
\(\mathsf{= 295 + 10 + 20 + 45 + 15 + 25}\)
\(\mathsf{= 305 + 20 + 45 + 15 + 25}\)
\(\mathsf{= 325 + 45 + 15 + 25}\)
\(\mathsf{= 370 + 15 + 25}\)
\(\mathsf{= 385 + 25}\)
\(\mathsf{= \bf 410}\)
\(\mathsf{= \dfrac{410}{12}}\)
\(\mathsf{\dfrac{410}{12} \approx \bf 34.1667}\)
\(\boxed{\boxed{\huge\textsf{Thus, your ANSWER is: \boxed{\mathsf{ \bf \underline{{\star 34.1667\star}}}}}}}}\huge\checkmark\)
\(\huge\textsf{Good luck on your assignment \& enjoy your day!}\)
~\(\frak{Amphitrite1040:)}\)
Quick algebra 1 question for 10 points!
Only answer if you know the answer, quick shout-out to tariqareesha2 and MrBrainly, tysm for the help!
Answer:
speed equals distance over time.
To and fro, distance=speed×time(ts)
distance=900×18=16,200km.
therefore, ts=16,200
since, speed = distance/time
therefore, time taken is inversely proportional to speed making D the best option.
helppppppppppppppppppppp
Construction 3.17 which was EAV-Secure Prove the opposite - i.e. if G is not a PRG, then 3.17 cannot be EAV-secure. Let G be a pseudorandom generator with expansion factor ℓ. Define a private-key encryption scheme for messages of length ℓ as follows: - Gen: on input 1 n
, choose uniform k∈{0,1} n
and output it as the key. - Enc: on input a key k∈{0,1} n
and a message m∈{0,1} ℓ(n)
, output the ciphertext c:=G(k)⊕m. - Dec: on input a key k∈{0,1} n
and a ciphertext c∈{0,1} ℓ(n)
, output the message m:=G(k)⊕c. A private-key encryption scheme based on any pseudorandom generator. THEOREM 3.18 If G is a pseudorandom generator, then Construction 3.17 is a fixed-length private-key encryption scheme that has indistinguishable encryptions in the presence of an eavesdropper. PROOF Let Π denote Construction 3.17. We show that Π satisfies Definition 3.8. Namely, we show that for any probabilistic polynomial-time adversary A there is a negligible function negl such that Pr[PrivK A,Π
eav
(n)=1]≤ 2
1
+neg∣(n)
If G is not a PRG, then Construction 3.17 cannot be EAV-secure. This shows the contrapositive of Theorem 3.18.
To prove the opposite, we need to show that if G is not a pseudorandom generator (PRG), then Construction 3.17 cannot be EAV-secure (indistinguishable encryptions in the presence of an eavesdropper).
Let's assume that G is not a PRG. This means that there exists some efficient algorithm D that can distinguish the output of G from random strings with non-negligible advantage. We will use this assumption to construct an adversary A that can break the EAV-security of Construction 3.17.
The adversary A works as follows:
1. A receives a security parameter n.
2. A runs the key generation algorithm Gen and obtains the key k.
3. A chooses two distinct messages m0 and m1 of length ℓ(n).
4. A computes the ciphertexts c0 = G(k) ⊕ m0 and c1 = G(k) ⊕ m1.
5. A chooses a random bit b and sends cb to the challenger.
6. The challenger encrypts cb using the encryption algorithm Enc with key k and obtains the ciphertext c*.
7. A receives c* and outputs b' = D(G(k) ⊕ c*).
8. If b = b', A outputs 1; otherwise, it outputs 0.
We analyze the probability that A can distinguish between encryptions of messages m0 and m1. Since G is not a PRG, D has a non-negligible advantage in distinguishing G's output from random strings. Therefore, there exists a non-negligible function negl such that:
|Pr[D(G(k)) = 1] - Pr[D(U) = 1]| ≥ negl(n),
where U denotes a truly random string of length ℓ(n).
Now, consider the probability of A winning the PrivK game:
Pr[PrivK_A,Π
eav
(n) = 1] = Pr[b = b']
= Pr[D(G(k) ⊕ c*) = D(G(k))]
= Pr[D(G(k)) = 1]
≥ Pr[D(U) = 1] - negl(n).
Since negl(n) is non-negligible, we have:
Pr[PrivK_A,Π
eav
(n) = 1] ≥ 2^(-1) + negl(n).
Thus, if G is not a PRG, then Construction 3.17 cannot be EAV-secure. This shows the contrapositive of Theorem 3.18.
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What are the lengths of sides kn and nm of the kite? kn = units nm = units
the lengths of sides KN and NM of the kite KN = 15 units and NM = 20 units
What is quadrilateral?
Quadrilaterals are typically four-sided closed shapes, and there are numerous varieties of them. Square, rectangle, rhombus, kite, and trapezoid are the most typical shapes. Four closed sides make up a quadrilateral. Quadrilaterals are the following figures: a four-sided figure. The form features a single set of parallel sides and no right angles.
Given that KLMN is a kite
According to the given figure KN = KL and LM=NM
we have the equation y+10=2y+5
y = 5
So KN = KL =15
On putting x =7 for LM and MN we get
LM = MN = 20
Hence, the lengths of sides KN and NM of the kite KN = 15 units and NM = 20 units
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the solution of the following equation as 0.15 ( 10t - 9= 0.75 (4t - 3)
Answer:
\(\huge\boxed{\sf t = 0.6}\)
Step-by-step explanation:
\(\sf 0.15(10t-9) = 0.75(4t-3)\\\\Resolving \ Parenthesis\\\\1.5t-1.35 = 3t - 2.25\\\\Combining \ like \ terms\\\\-1.35 + 2.25 = 3t-1.5t\\\\0.9 = 1.5t\\\\Dividing \ both \ sides \ by \ 1.5\\\\0.9/1.5 = t\\\\0.6 = t\\\\OR\\\\\bold{t = 0.6}\)
Hope this helped!
~AnonymousHelper1807An airliner carries 50 passengers and has doors with a height of 70 in. Heights of men are normally distributed with a mean of 69. 0 in and a standard deviation of 2. 8 in. Complete parts (a) through (d). A. If a male passenger is randomly selected, find the probability that he can fit through the doorway without bending. The probability is 0. 6406. (Round to four decimal places as needed. ) b. If half of the 50 passengers are men, find the probability that the mean height of the 25 men is less than 70 in. The probability is 0. 9633. (Round to four decimal places as needed. )
The probability is 0.6480.
The probability is 0.9629.
How to solve for the probability1. This can be computed using the standard normal distribution as follows:
z = (70 - 69.0) / 2.8 = 0.357
Using a standard normal table or calculator, we find that P(Z ≤ 0.357) ≈ 0.6480. Therefore, the probability that a male passenger can fit through the doorway without bending is approximately 0.6480.
2. = 2.8/√25 = 0.56 inches.
We want to find P(x < 70), which is the probability that the mean height of the 25 men is less than 70 inches. This can be standardized using the standard normal distribution as follows:
z = (70 - 69.0) / 0.56 = 1.79
Using a standard normal table or calculator, we find that P(Z < 1.79) ≈ 0.9629. Therefore, the probability that the mean height of the 25 men is less than 70 inches is approximately 0.9629.
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using the metric system, multiplying a number by 1,000 would be the same as moving the decimal point three places to the _________________
When multiplying or dividing a number by 1,000, it is the same as moving the decimal point three places to the right or left, respectively.
When multiplying a number by 1,000, it is the same as moving the decimal point three places to the right. This can be represented through the formula x * 1000 = x/1000. For example, if the number is 5, then 5 * 1000 = 5,000. This is the same as moving the decimal point three places to the right of 5, which results in 5.000. The same concept can be applied when dividing a number by 1,000. For example, if the number is 5,000, then 5,000 / 1000 = 5. This is the same as moving the decimal point three places to the left of 5,000, which results in 5.000. Therefore, when multiplying or dividing a number by 1,000, it is the same as moving the decimal point three places to the right or left, respectively.
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an airline pilot is flying at 10,000 feet in the air and sees his airport at angle of depression of 12 degrees. To the nearest foot how far is the pilot from the airport ? the pilot is ______ feet from the airport.
Using the sine function:
\(\begin{gathered} \sin (\theta)=\frac{opposite}{hypotenuse} \\ \sin (12)=\frac{10000}{x} \\ solve= \\ x=\frac{10000}{\sin (12)} \\ x=48097ft \end{gathered}\)Strat
1. Brenna cuts wood for a fire. She can cut a log into thirds in 10 min.
How long would it take Brenna to cut a similar log into sixths?
Brenna would take 20 min to cut the same wood into sixths.
What are equation models?The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
Here,
Let x be the rate at which Brenna cuts the wood in a single piece,
So, She can cut a log into thirds in 10 min.
x = 3/10
x = 0.3 cuts per minute for single wood,
Now,
time took to cut the same wood into 6 pieces
= 6 / x
= 6 / 0.3
= 20 min
Thus, Brenna would take 20 min to cut the same wood into sixths.
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A raffle sold 2,000 tickets. What is the theoretical probability of NOT having the winning ticket? P(NOT winning ticket) =
Answer:
0
Step-by-step explanation:
you dont own any tickets, so how can you have any probability of winning? 2000 other people, or at least 2000 other tickets are owned by other people than you.