The vector in the plane of b and c whose projection on a has a magnitude of sqrt(2/3) is option C: 2i - j + 5k.
To find a vector in the plane of b and c whose projection on a has a magnitude of sqrt(2/3), we need to find the component of a that lies in the plane of b and c. This can be done by finding the orthogonal projection of a onto the plane of b and c.
The plane of b and c can be represented by the cross product of b and c:
n = b × c = (i + 2j - k) × (i + j - 2k)
= i(j*(-2) - (-k)*1) - (i*(-2) - (-k)*1) + (i*(1) - (i)*(-2))
= -3i + 5k
The projection of a onto the plane of b and c can be found using the dot product:
proj = (a · n) / |n|
= ((2i - j + k) · (-3i + 5k)) / sqrt((-3)^2 + 5^2)
= (-6 - 5) / sqrt(9 + 25)
= -11 / sqrt(34)
Now, we can find the vector in the plane of b and c by scaling the normal vector n by the magnitude of the projection:
vector = (proj / |n|) * n
= (-11 / sqrt(34)) * (-3i + 5k)
= (33 / sqrt(34))i - (55 / sqrt(34))k
Simplifying this vector, we get:
vector = (33 / sqrt(34))i - (55 / sqrt(34))k
Comparing this with the given options, we see that the vector (33 / sqrt(34))i - (55 / sqrt(34))k matches option C: 2i - j + 5k.
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Complete Question
Let a=2i−j+k,b=i+2j−k and c=i+j−2k be three vectors. A vector in the plane of b and c whose projection on a is of magnitude sqrt (2/3) is what?
A 2i+3j-3k
B 2i+3j+3k
C 2i-j+5k
D 2i+j+5k
what is 825 divided by 15?
A force of 61 N is applied to an area of 750 cm2. Calculate the pressure in N/m2. Give your answer to the nearest integer
Answer:
813 N/m²
Step-by-step explanation:
The units of pressure tell you it is found by dividing force by area. Here, we need to convert the units of the given area so we can express the pressure appropriately.
__
pressure = force / area
pressure = (61 N)/(750 cm² × ((1 m)/(100 cm))²) = (61 N)/(0.0750 m²)
pressure ≈ 813 N/m²
Use the counterexample method to prove the following categorical syllogisms invalid. In doing so, follow the suggestions given in the text.
All meticulously constructed timepieces are true works of art, for all Swiss watches are true works of art and all Swiss watches are meticulously constructed timepieces.
The categorical syllogism "All meticulously constructed timepieces are true works of art" is invalid. A counterexample can be found by considering a meticulously constructed timepiece that lacks aesthetic value.
To use the counterexample method to prove the categorical syllogism "All meticulously constructed timepieces are true works of art, for all Swiss watches are true works of art and all Swiss watches are meticulously constructed timepieces" invalid, we need to find a counterexample that shows the conclusion is false even if the premises are true. Let's consider a scenario in which there is a meticulously constructed timepiece that is not a true work of art. This would be a counterexample to the conclusion, since the conclusion asserts that all meticulously constructed timepieces are true works of art.
For example, suppose that there is a meticulously constructed timepiece that is made with the sole purpose of accurate timekeeping, and has no aesthetic value. This timepiece can be considered a counterexample to the conclusion, since it is meticulously constructed but not a true work of art.
Therefore, the categorical syllogism "All meticulously constructed timepieces are true works of art, for all Swiss watches are true works of art and all Swiss watches are meticulously constructed timepieces" is invalid, since there exist cases where the premises are true but the conclusion is false.
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Find the zero of the function.
g(x) = x2 + 22x + 121
The zero of the function is x=
Answer:
x = -11
Step-by-step explanation:
To find the zero of this function, factor the equation:
g(x) = \(x^{2} +22x+121\)
g(x) = (x + 11) (x + 11)
g(x) = \((x+11)^{2}\)
The zeros of a function are the values of x that will make g(x) equal 0. So, the zero of this function is -11, because -11 + 11 = 0. So, x = -11.
How do you find the inverse of f 1 of the function f?
The inverse of \(f^{-1}\) of the function f is inverse is swapping of coordinates x and y and making y as subject.
What is inverse function?Inverse function is represented by with regards to the original function and the domain of the original function becomes the range of inverse function and the range of the given function becomes the domain of the inverse function. The graph of the inverse function is obtained by swapping (x, y) with (y, x) with reference to the line y = x.
Generally, the method of calculating an inverse is swapping of coordinates x and y. This newly created inverse is a relation but not necessarily a function. The original function has to be a one-to-one function to assure that its inverse will also be a function.
Therefore, the inverse of \(f^{-1}\) of the function f is inverse is swapping of coordinates x and y and making y as subject.
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a ball is thrown vertically upward. after seconds, its height (in feet) is given by the function . after how long will it reach its maximum height? h(t)
The ball reaches its maximum height after 2 seconds.
To determine when the ball reaches its maximum height, we need to find when its velocity changes from positive to negative. The velocity of the ball is given by the derivative of its height, which is the function h'(t) = -16t. The ball's velocity is 0 when h'(t) = 0, so we need to solve -16t = 0.
The solution to this equation is t = 0. When t = 2, h'(t) = -32, which is negative, indicating that the ball is moving downward. So, the maximum height is reached when the velocity changes from positive to negative, which is at t = 2 seconds.
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Annette and Nathan teach the kindergarten class at Wood Grove Elementary. Annette teaches on Monday, Wednesday, and Friday while Nathan teaches on Tuesday and Thursday. They both like this arrangement as it allows them time to help out with elderly parents when they are not teaching. What type of work arrangement does this represent
Job sharing is the name for this type of arrangement as Annette and Nathan share their work at Wood Grove Elementary.
A job share arrangement is a full-time of work of job and it is split between two individuals, each with responsibility for the success of the total job. Work sharing, sometimes known as work sharing, is a work arrangement in which two persons, or occasionally more, are kept on a part-time or reduced-time basis to carry out tasks that are typically completed by one person working full-time of job.
As a result, there is a net decrease in per-employee income. The individuals who share the job are jointly accountable for the workload of the shared job and work together to fulfill the task.
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I don't feel like doing this so yh... Anyways I love u.
Answer:
23 pounds of bananas
Complete the sentences.
Enter your answers in the spaces provided.
For the arithmetic sequence 6, 10, 14, 18, 22, ..., the 38th term of the sequence is (WHATS the answer??)
When an = 210, the value of n= ( what’s the answer?)
Answer:
158 is the 38th term of the sequence
Step-by-step explanation:
1. Add 4 to 6 and tap the equal sign 37 times and the answer will be visible. it is 158
I need help like rn plzzzz No linksss
Answer:
Its too blurry, I can't see. Try re-posting the question with the image, but a little closer please.
Step-by-step explanation:
Answer:
2 1/4
Step-by-step explanation:
3/4+2/4=5/4 or 1 1/4 + 1 = 2 1/4
write the function below in slope and show ALL the steps to getting the answers
we have the equation
\(x-\frac{1}{3}y=4\)the equation in slope-intercept form is
y=mx+b
so
Isolate the variable y in the given equation
step 1
subtract x both sides
\(\begin{gathered} x-\frac{1}{3}y-x=4-x \\ \\ -\frac{1}{3}y=4-x \end{gathered}\)step 2
Multiply by -3 both sides
\(\begin{gathered} (-3)\cdot(-\frac{1}{3}y)=-3(4-x) \\ y=-12+3x \\ y=3x-12 \end{gathered}\)How do I solve this I've been on this question for 3 weeks!!
Answer:
c=3√5
Step-by-step explanation:
it appears the vertices of the inscribed quadrilateral,cuts the edges of the square at certain points that form right angles,with C being the hypotenuse.
c=√3²+6²
c=√9+36
c=√45=3√5
I need answers quick. ASAP. HELP.
Use the inner product (p, q) = a b + a₁b₁ + a₂b₂ to find (p, q), ||p|, ||a||, and d(p, q) for the polynomials in P₂. p(x) = 1 − x + 4x², g(x) = x - x² (a) (p, q) (b) ||p|| (c) ||a|| (d) d(p, q) Find (u, v), u, v, and d(u, v) for the given inner product defined on R". u = (0, 2, 3), v = (2, 3, 0), (u, v) = u · v (a) (u, v) (b) ||ul| (c) ||v|| (d) d(u, v)
For the polynomials p(x) = 1 - x + 4x² and q(x) = x - x², (p, q) = 10, ||p|| = √18, ||a|| = √18, and d(p, q) cannot be determined. For the vectors u = (0, 2, 3) and v = (2, 3, 0), (u, v) = 6, ||u|| = √13, ||v|| = √13, and d(u, v) cannot be determined.
In the first scenario, we have p(x) = 1 - x + 4x² and q(x) = x - x². To find (p, q), we substitute the coefficients of p and q into the inner product formula:
(p, q) = (1)(0) + (-1)(2) + (4)(3) = 0 - 2 + 12 = 10.
To calculate ||p||, we use the formula ||p|| = √((p, p)), substituting the coefficients of p:
||p|| = √((1)(1) + (-1)(-1) + (4)(4)) = √(1 + 1 + 16) = √18.
For ||a||, we can use the same formula but with the coefficients of a:
||a|| = √((1)(1) + (-1)(-1) + (4)(4)) = √18.
Lastly, d(p, q) represents the distance between p and q, which can be calculated as d(p, q) = ||p - q||. However, the formula for this distance is not provided, so it cannot be determined. Moving on to the second scenario, we have u = (0, 2, 3) and v = (2, 3, 0). To find (u, v), we use the given inner product formula:
(u, v) = (0)(2) + (2)(3) + (3)(0) = 0 + 6 + 0 = 6.
To find ||u||, we use the formula ||u|| = √((u, u)), substituting the coefficients of u:
||u|| = √((0)(0) + (2)(2) + (3)(3)) = √(0 + 4 + 9) = √13.
Similarly, for ||v||, we use the formula with the coefficients of v:
||v|| = √((2)(2) + (3)(3) + (0)(0)) = √(4 + 9 + 0) = √13.
Unfortunately, the formula for d(u, v) is not provided, so we cannot determine the distance between u and v.
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With reference to the distribution of IQ scores again, according to the 68-95-99.7 rule, what is the probability that a person selected at random has an IQ greater than 100
The IQ score distribution follows a normal curve and is distributed with a mean of 100 and a standard deviation of 15. The 68-95-99.7 rule states that approximately 68% of the population falls within one standard deviation of the mean, 95% falls within two standard deviations of the mean, and 99.7% falls within three standard deviations of the mean.
To find the probability that a person selected at random has an IQ greater than 100, we need to calculate the z-score first. The z-score formula is given by:
z = (X - μ) / σ
where X is the IQ score, μ is the mean, and σ is the standard deviation.
Substituting the given values, we get:
z = (100 - 100) / 15
z = 0
A z-score of 0 means that the IQ score is equal to the mean. Since we want to find the probability of a person having an IQ score greater than 100, we need to find the area under the normal curve to the right of z = 0. Using a standard normal distribution table or a calculator, we can find this area to be approximately 0.5 or 50%. Therefore, the probability that a person selected at random has an IQ greater than 100 is 50%.
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v²=u²+2as. If u = 12, a = -3 and s=18, Find v
Answer:
v=6
Step-by-step explanation:
v²=u²+2as
v²=12²+2(-3)(18)
v²=144-108
v²=30
v=6
A cola-dispensing machine is set to dispense 8 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manufacturer of the machine would like to set the control limit in such a way that, for samples of 47, 5% of the sample means will be greater than the upper control limit, and 5% of the sample means will be less than the lower control limit.
If the population mean shifts to 7.8, what is the probability that the change will be detected? (Round your intermediate calculations to 2 decimal places and final answer to 4 decimal places.)
If the population mean shifts to 8.6, what is the probability that the change will be detected? (Round your intermediate calculations to 2 decimal places and final answer to 4 decimal places.)
1. When the population mean shifts to 7.8, the probability of detecting the change is approximately 0.0495 (or 4.95%).
2. The probability of detecting the change is 0.0495 or 4.95%.
To solve this problem, we'll use the concept of control limits and the sampling distribution of the sample means.
When the population mean shifts to 7.8: First, let's calculate the standard deviation of the sampling distribution, also known as the standard error (SE). The formula for SE is given by SE = σ / sqrt(n), where σ is the standard deviation of the population (1.0 ounce) and n is the sample size (47).
SE = 1.0 / sqrt(47) ≈ 0.145
Next, we need to determine the z-score corresponding to the lower and upper tails of the sampling distribution that capture 5% each. Since the total probability in both tails is 10%, each tail will have a probability of 5%. We can find the z-scores using a standard normal distribution table or calculator.
The z-score corresponding to the lower tail of 5% is approximately -1.645.
The z-score corresponding to the upper tail of 5% is approximately 1.645.
Now, let's calculate the lower and upper control limits:
Lower Control Limit (LCL) = Population Mean - (z * SE)
Upper Control Limit (UCL) = Population Mean + (z * SE)
LCL = 7.8 - (-1.645 * 0.145) ≈ 8.026
UCL = 7.8 + (1.645 * 0.145) ≈ 9.574
To find the probability of detecting the change, we need to calculate the area under the sampling distribution curve that falls beyond the control limits. In this case, we're interested in the area above the upper control limit.
Since the distribution is assumed to be normal, we can use the standard normal distribution's cumulative distribution function (CDF) to calculate this probability.
Probability of detecting the change = 1 - CDF(z-score for UCL)
Using the z-score for the upper control limit (UCL), we can calculate the probability.
Probability of detecting the change ≈ 1 - CDF(1.645) ≈ 0.0495
Therefore, when the population mean shifts to 7.8, the probability of detecting the change is approximately 0.0495 (or 4.95%).
When the population mean shifts to 8.6: We'll follow the same steps as before.
SE = 1.0 / sqrt(47) ≈ 0.145
The z-score corresponding to the lower tail of 5% is still approximately -1.645.
The z-score corresponding to the upper tail of 5% is still approximately 1.645.
LCL = 8.6 - (-1.645 * 0.145) ≈ 8.926
UCL = 8.6 + (1.645 * 0.145) ≈ 10.274
Probability of detecting the change = 1 - CDF(z-score for UCL)
Probability of detecting the change ≈ 1 - CDF(1.645) ≈ 0.0495
Therefore, when the population mean shifts to 8.6, the probability of detecting the change is also approximately 0.0495 (or 4.95%).
In both cases, the probability of detecting the change is 0.0495 or 4.95%.
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When multiplying two binomials together, is it possible to get a monomial, binomial, or polynomial with 4 terms? With examples please.
When multiplying two binomials together , we get polynomial with 4 terms.
What is expression?
Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. Unknown variables, integers, and arithmetic operators are the components of an algebraic expression. There are no symbols for equality or inequality in it.
Here let us take the two binomial (a + b) and (c + d).
Now multiplying two binomial then,
=> (a + b)(c + d)
=> ac+ad+bc+bd.
We get polynomial with 4 terms.
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Select the correct answer.
Suppose the following function is graphed.
y = 8^5x +4
On the same grid, a new function is graphed. The new function is represented by the following equation.
y = -5^8x+8
Which of the following statements about these graphs is true?
The true statement about these graph is that: B. the graph of the original function (y = 8/5x + 4) is perpendicular to the graph of the new function (y =- 5/8x + 8).
What is a graph?A graph can be defined as a type of chart that's commonly used to for the graphical representation of data on both the horizontal and vertical lines of a Cartesian coordinate, which are typically known as the x-axis and y-axis respectively.
How to interpret the graph?Mathematically, the standard form of the equation of a straight line on a graph is given by;
y = mx + c
Where:
x and y are the points.m is the slope.c is the intercept.The condition for perpendicularity.In Mathematics, the condition for perpendicularity of two (2) lines is as follows:
m₁ × m₂ = -1
8/5 × (-5/8) = -1
Based on the graph (see attachment) of the original function and new function, we can infer and logically deduce that the true statement about their graph is that the graph of the original function (y = 8/5x + 4) is perpendicular to the graph of the new function (y =- 5/8x + 8).
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Complete Question:
Suppose the following function is graphed. y = 8/5x + 4 On the same grid, a new function is graphed. The new function is represented by the following equation. y =- 5/8x + 8. Which of the following statements about these graphs is true?
A. The graphs intersect at (0,8).
B. The graph of the original function is perpendicular to the graph of the new function.
C. The graph of the original function is parallel to the graph of the new function.
D. The graphs intersect at (0,4).
I want the answer PLZ
Answer:
3
Step-by-step explanation:
They have the same side length and its shown
Help with these both too
1. 3 rows with 21 sneakers
2. D. 11*2
Find five rational numbers between -1/2 and 4/7
The rational numbers from the given numbers are -5/7, -6/7, 1/7, 2/7,3/7.
According to the statement
we have to find that the rational numbers.
So, For this purpose, we know that the
Rational number, a number that can be represented as the quotient p/q of two integers such that q ≠ 0.
From the given information:
The given numbers are between -1/2 and 4/7
Then to find the numbers then
Rational numbers = (-1/2 +4/7) /2
Rational numbers = (-1 +2/7)
Rational numbers = -5/7.
And then the number becomes -6/7, 2/7,3/7.
Now, The rational numbers from the given numbers are -5/7, -6/7, 1/7, 2/7,3/7.
So, The rational numbers from the given numbers are -5/7, -6/7, 1/7, 2/7,3/7.
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Hurry please!!!!
22.69=22+____+____
Answer:
22.69 = 22 + 0.6 + 0.09
Step-by-step explanation:
Distributive Property:
22.69 = 22 + 0.6 + 0.09
If my answer is incorrect, pls correct me!
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-Chetan K
find the indicated real 17 th root of a. h=5 a=243
Based on the given parameter, the real fifth root of the number 243 is 3
How to determine the real root of the numberThe root and the number are given as
n = 5 a = 243
Where
The root is represented by the variable nThe number is represented by the variable aSo, we have
n = 5 a = 243
This means that we calculate the 5th root of 243
To start with, we express 243 as 3 to the power of 5
This gives
243 = 3⁵
Using the laws of exponents, we take the 5th root of 243
So, we have
Root of 243 = 3
Hence, the indicated root is 3
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Complete question
Find the indicated real n-th root of a when
n = 5 a = 243
Two friends argue over who brushes their teeth more often. To settle the
argument, they keep track of the number of mornings and nights they brush
and calculate a probability. These are shown in the table.
Probability of brushing
in morning
Probability of brushing
in evening
Braxton
0.72
0.85
Arabella
0.82
0.79
Who is more likely to brush both morning and evening? Assume all events are
independent.
Answer:
Arabella
Step-by-step explanation:
I am assuming the information in your table looks like this:
P(brushing in morning) P(brushing in evening)
Braxton .72 .85
Arabella .82 .79
Now, to find the probability either of Braxton or Arabella brushes in both the morning and evening (knowing they are independent), we multiply them together.
P(Braxton brushes in morning AND evening) = .72 × .85 = .612 = 61.2%
P(Arabella brushes in morning AND evening) = .82 × .79 = .6478 = 64.78%
Since 664.77% > 61.2%, we know that Arabella is more likely to brush her teeth in both the morning and evening compared to Braxton
Arabella is more likely to brush both morning and evening than Braxton, as her probability of brushing both morning and evening is higher.
What is Probability?The probability that an event will occur is measured by the ratio of favorable examples to the total number of situations possible
Probability = number of desirable outcomes / total number of possible outcomes
The value of probability lies between 0 and 1
Given data ,
To find out who is more likely to brush both morning and evening, we need to calculate the probability of each person brushing both morning and evening and compare the results.
For Braxton, the probability of brushing both morning and evening is:
P(Braxton brushes both morning and evening) = P(Braxton brushes in the morning) × P(Braxton brushes in the evening)
= 0.72 × 0.85
P ( B ) = 0.612
For Arabella, the probability of brushing both morning and evening is:
P(Arabella brushes both morning and evening) = P(Arabella brushes in the morning) × P(Arabella brushes in the evening)
= 0.82 × 0.79
P ( A ) = 0.6478
And , P ( A ) > P ( B )
Therefore, Arabella is more likely to brush both morning and evening than Braxton, as her probability of brushing both morning and evening is higher.
Hence , the probability is solved
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The complete question is attached below :
Two friends argue over who brushes their teeth more often. To settle the argument, they keep track of the number of mornings and nights they brushand calculate a probability. These are shown in the table.Who is more likely to brush both morning and evening? Assume all events are independent.
solve 2x < 10 and plz explain plz .
Answer:
x < 5
Step-by-step explanation:
You can solve an inequality much like you would solve a normal equation.
There are 2x on the left side of the inequality, so divide both sides by two to find what x equals:
2x < 10
(2x)/2 < (10)/2
1x < 5
x < 5
round 8,272 to the nearest thousand
Answer:
8000
Step-by-step explanation:
Answer: Therefore, the number 8272 rounded to the nearest thousand is 8000
Step-by-step explanation:
Which of the following options have the same value as 80 , percent of 22
Answer:: 80% of 22 is 16.
Answer:
80% of 22 is 16. Hope I helped you!!
if the multiplier is 6, then the mpc is group of answer choices A. 0.16.
B. 0.83
C. 0.71.
D 0.86.
The correct answer choice for the MPC (marginal propensity to consume) when the multiplier is 6 is not provided among the options A. 0.16, B. 0.83, C. 0.71, or D. 0.86.
The MPC is calculated as the ratio of the change in consumption to the change in income. When the multiplier is given, we can derive the MPC using the formula MPC = 1 / (1 + MPC). In this case, the multiplier is stated to be 6.
To find the corresponding MPC, we can solve the equation 1 / (1 + MPC) = 6 for MPC.
Rearranging the equation, we have 1 + MPC = 1 / 6. Subtracting 1 from both sides, we get MPC = 1 / 6 - 1 = -5 / 6.
The result MPC = -5 / 6 implies a negative MPC, which does not align with any of the given answer choices.
Additionally, all the answer choices provided (0.16, 0.83, 0.71, and 0.86) are positive values, further confirming that none of them represents the correct MPC when the multiplier is 6.
Therefore, the correct answer choice for the MPC when the multiplier is 6 is not listed among the options A. 0.16, B. 0.83, C. 0.71, or D. 0.86.
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what is the volume of a right circular cylinder with a radius of 3 in. and a height of 10 in.? responses a.30π in³ 30 pi,
b. in³ 60π in³ 60 pi, c.in³ 90π in³ 90 pi,
d. in³ 120π in³
The Volume of the cylinder is 90π cubic inches.
The volume of a right circular cylinder, we can use the formula:
Volume = π * r^2 * h
Where π is the mathematical constant pi (approximately 3.14159), r is the radius of the cylinder's base, and h is the height of the cylinder.
In this case, the radius is given as 3 inches and the height is given as 10 inches. Let's substitute these values into the formula:
Volume = π * (3^2) * 10
= π * 9 * 10
= 90π cubic inches
Therefore, the volume of the cylinder is 90π cubic inches.
In the answer choices provided:
a. 30π in³
b. 60π in³
c. 90π in³
d. 120π in³
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