If a is an invertible n×n matrix, the eigenvalues of a and its inverse a−1 are related in the following way:
1. The eigenvalues of a and a−1 are reciprocals of each other. This means that if λ is an eigenvalue of a, then 1/λ is the corresponding eigenvalue of a−1.
To understand this, let's consider an example:
Suppose a is a 2x2 invertible matrix with eigenvalues λ1 and λ2. If we find the inverse of a, denoted as a−1, its eigenvalues will be 1/λ1 and 1/λ2.
2. For a more general case, let's consider raising a to an arbitrary integer power m. The eigenvalues of a and am are related as follows:
- If λ is an eigenvalue of a, then λ^m is an eigenvalue of am.
Let's illustrate this with an example:
Suppose a is a 2x2 invertible matrix with eigenvalues λ1 and λ2. If we raise a to the power of m, denoted as am, its eigenvalues will be λ1^m and λ2^m.
In summary, when a is an invertible n×n matrix, the eigenvalues of a and a−1 are reciprocals of each other. Moreover, raising a to an arbitrary integer power m results in the eigenvalues of am being the eigenvalues of a raised to the power of m.
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Suppose a curve is traced by the parametric equations x=2(sin(t)+cos(t)) y=25−8cos2(t)−16sin(t) as t runs from 0 to π. At what point (x,y) on this curve is the tangent line horizontal?
Answer:
completamente respuesta
Please help I will mark you as the brainiest, I sincerely am grateful if you answer~
Answer:
The amount of money they will spend at the restaurant is $35.16
Step-by-step explanation:
From the information given in the question, we have;
The amount Jessica, Genesis, and Violet received as bill at the restaurant, X = $29.30
The amount they wished to leave as tip, T = 20% (of the bill)
Therefore, the amount of money they will spend at the restaurant, 'A', is given as follows;
A = X + T
T = 20% of X = 20/100 × X = 0.2·X
∴ A = X + 0.2·X = 1.2·X
X = $29.30
A = 1.2·X = 1.2 × $29.30 = $35.16
The amount of money they will spend at the restaurant, A = $35.16
In ΔSTU, TU = 15, US = 20, and ST = 14. Which statement about the angles of ΔSTU must be true?
Answer:
None of the angles will also be equal.
Step-by-step explanation:
Given
Shape: Triangle
\(TU = 15\)
\(US = 20\)
\(ST = 14\)
Required
True statement about the angles of STU
This question would have been best answered if there are options. Since there is none, I'll answer on a general term.
From the given parameters, we can see that none of the sides of the triangle are equal.
This implies that the triangle is a scalene triangle.
Now, we have established that the triangle is scalene because \(ST \ne TU \ne US\)
For a scalene triangle STU, it is true that none of the angles will also be equal.
for the following exercises, find the exact values of a) sin(2x), b) cos(2x), and c) tan(2x) without solving for x. 5. if sin x
The exact values of sin(2x), cos(2x), and tan(2x) without solving for x are: a) sin(2x) = 2sin(x)cos(x). b) cos(2x) = cos^2(x) - sin^2(x). c) tan(2x) = 2tan(x) / (1 - tan^2(x))
(a) To find the exact value of sin(2x), we can use the double angle formula for sine:
sin(2x) = 2sin(x)cos(x)
Therefore, the exact value of sin(2x) is 2sin(x)cos(x).
(b) To find the exact value of cos(2x), we can use the double angle formula for cosine:
cos(2x) = cos^2(x) - sin^2(x)
Therefore, the exact value of cos(2x) is cos^2(x) - sin^2(x).
(c) To find the exact value of tan(2x), we can use the double angle formula for tangent:
tan(2x) = 2tan(x) / (1 - tan^2(x))
Therefore, the exact value of tan(2x) is 2tan(x) / (1 - tan^2(x)).
The exact values of sin(2x), cos(2x), and tan(2x) without solving for x are:
a) sin(2x) = 2sin(x)cos(x)
b) cos(2x) = cos^2(x) - sin^2(x)
c) tan(2x) = 2tan(x) / (1 - tan^2(x))
These formulas allow us to express the values of sin(2x), cos(2x), and tan(2x) in terms of the values of sin(x) and cos(x) without explicitly solving for x.
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If you were to spin the spinner at left, what would be the probability of landing on green or orange? P(green or orange) Write your answer as a simplified fraction.
Using it's probability of landing on green or orange would be of:
P(green or orange) = 3/4.
What is the missing information?This problem is incomplete, but researching it on a search engine, it is found that:
Half the area of the spinner is of green.1/4 of the area of the spinner is orange.1/4 of the area of the spinner is purple.What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
From the areas of the spinner, the probability of landing on green or orange would be of:
P(green or orange) = 1/2 + 1/4 = 2/4 + 1/4 = 3/4.
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Find the number that makes the ratio equivalent to 6:7
60:
Answer:
60:70
Step-by-step explanation:
\( \frac{60}{x} = \frac{6}{7} \\ \\ 60 \times \frac{7}{6} = x \\ \\ 70 = x\)
convert this equation into standard form
y=-0.25(x+0)(x-8)
What is the range of the function on the graph? all real numbers all real numbers less than or equal to –1 all real numbers less than or equal to 3 all real numbers less than or equal to 0
Answer: all real numbers less than or equal to 3
Step-by-step explanation: third option
letter c
Answer:
all real numbers less than or equal to 3
Step-by-step explanation: Took the test
6x + 5 = 5x + 8 + 2x
Is x = 3 a solution? Explain.
I'm trying to formulate an equation to solve for the total cost of each coffee that was bought. Im having trouble putting one together for this question. Any help would be greatly appreciated.
Neveah bought a cupcake for $5 and coffees for 5 coworkers. She spent $35. How much was each coffee
Let's denote the cost of each coffee as 'c'.Neveah bought a cupcake for $5, which we can represent as 5.
She also bought coffees for 5 coworkers, so the total cost of the coffees can be represented as 5c.
The total amount Neveah spent is $35.
Putting it all together, we can set up the equation:
5 + 5c = 35
To solve for 'c', we can isolate the variable by subtracting 5 from both sides:
5c = 30
Then, we divide both sides by 5 to solve for 'c':
c = 30/5
Simplifying the expression, we find that each coffee costs $6.
Therefore, each coffee was bought for $6.
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factiorize; y*2-4,is the question
Answer:
(y - 2)(y + 2)
standard factorization!
tadah
For the summer, Steve buys 2 shirts and 3 pairs of jeans. His brother buys 3 shirts and 1 pair of jeans. Define and use variables to represent the total cost.
Answer:
5s + 4j where s is the cost of shirts and j is the cost of jeans
Step-by-step explanation:
for shirts, we can represent it with s
for jeans, we can represent it with j
steve is buying two shirts (s) and three jeans (j), so we can write Steve's cost as 2s+3j
his brother buys three shirts (s) and one pair of jeans (j), so we can write his brothers cost as 3s+1j
now, steve's cost is 2s+3j
and his brother's is 3s+1j
we can add these together to find the total cost
2s + 3j + 3s + 1j
combine like terms
5s + 4j
The total cost of the shirts and jeans are,
⇒ 5x + 4y
Where, x is cost of each shirt and y is cost of each jeans.
What is Addition?The process of combining two or more numbers is called the Addition. The 4 main properties of addition are commutative, associative, distributive, and additive identity.
Given that;
For the summer, Steve buys 2 shirts and 3 pairs of jeans. His brother buys 3 shirts and 1 pair of jeans.
Let the cost of each shirt = x
And, The cost of each jeans = y
Hence, We get;
Cost of Steve shirts and jeans = 2x + 3y
And, Cost of his brother shirts and jeans = 3x + y
Thus, The total cost of the shorts and jeans are,
⇒ 2x + 3y + 3x + y
⇒ 5x + 4y
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What symbol compares these numbers 98.0 or 97.7
Answer:
Step-by-step explanation:
Answer:
98.0 > 97.7
Step-by-step explanation:
">" Means greater than
"<" Means less than
Two other comparison symbols are ≥ (greater than or equal to) and ≤ (less than or equal to).
Since 98.0 is greater than 97.7, you use the greater than symbol >.
Which question is a statistical question?
A) how many students are in your math class?
B) How tall are the students in your math class?
C) How tall is Troy?
D) Is Troy taller than Sylvia?
Answer:
B
Step-by-step explanation:
statistical should have data and numbers that can calculate
ex Mean, Med, Mode
Answer:
A) How may students are in your math class?
This is because statistics are collecting How Many of something there is. If a question said: "How many people in your class are 5'2" that would be statistical.
guys help me plz i don't know this please help me
Answer: The least value goes with the greatest value
Step-by-step explanation:
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A student is graduating from college in six months but will need a loan in the amount of $2,560 for the last semester. the student receives an unsubsidized stafford loan with an interest rate of 6.8%, compounded monthly. what is the balance of the unsubsidized loan at the time of graduation?
The balance of the unsubsidized loan at the time of graduation is $3,691.10.
Given:
Principal amount = $2,560
Interest rate = 6.8% = 0.068
Time period = 6 months
We can use the formula for compound interest to calculate the future value:
\(Future\; Value = P (1 + \dfrac{Interest Rate}{Number of Periods}) ^{(Periods * Time )\)
Substituting the value back into the formula as
Future Value = \($2,560 (1 + \dfrac{0.068}{12} )^{(12 * 6)\)
= \($2,560 (1 + 0.00566667)^{(72)\)
= \($2,560 (1.00566667)^{(72)\)
= $2,560 * 1.44044291
= $3,691.10
Therefore, the balance is $3,691.10.
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Amelie wants to decorate the outside of the box but not the bottom. It is a 5 in. by 3 in. by 2 rectangular prism. If the beads that she is using cost $0.25 per square inch, how much will she pay for the beads? Her work is shown. surface area = 15 + 15 + 6 + 6 + 10 + 10 = 62 in. 2 cost = 0.25(62) = $15.50 Did she make an error? Yes, she should have only added the area of five of the six faces. Yes, she did not use the correct area formula for a rectangle. Yes, she calculated the cost incorrectly. No, she didn’t make any errors.
Answer:
Yes, she should have only added the area of five of the six faces.
Step-by-step explanation:
The formula for determining the surface area of a cuboid or box is expressed as
Surface area = 2lw + 2lh + 2wh
Where l, w and h represents length, width and height of the box respectively.
2lw represents the area of the top and the bottom of the box. Since she doesn't want to cover the bottom, it becomes lw. Therefore,
Surface area = 15 + 6 + 6 + 10 + 10 = 47 in².
The cost would be
0.25 × 47 = $11.75
Therefore,
Yes, she should have only added the area of five of the six faces.
15lb.12oz.+8lb.13oz.+7lb.9oz.
Answer: 32lb 2 oz
Step-by-step explanation:
15lb.12oz.+8lb.13oz.+7lb.9oz.=
(15+8+7)lb + (12+13+9)oz=
30lb+34oz=
30lb+32oz+2oz=32lb 2 oz
Answer:
32lb. 2oz.
Step-by-step explanation:
For ounces: 12+13+9=34
34/16= 2lb and 2oz
For pounds
15+8+7=30
For all: 30+2= 32lb
ANSWER: 32lb. 2oz.
hree hundred books sell for 40 dollars each, resulting in a revenue of 12,000 dollars. For each $5 increase in the price, 25 fewer books are sold. Write the revenue R as a function of the number x of $ 5 increases.
A total of 12,000 dollars is made from the sale of 300 books at a price of $40 each. 25 fewer books are sold for every $5 increase in price. R(x)=(40+5x)(300−25x) R ( x ) = ( 40 + 5 x ) ( 300 − 25 x )
What is the revenue R as a function of number x ?Assumed in this instance is , At a price of 40 dollars apiece, \($(300)(40 \$)=12,000 \$$\) books generate $300 in revenue. The result is that 25 fewer books are sold if we raise the price of each book by $5. That's \($(300-25 x)$\). Due to the fact that the price always rises by five times more than the number of books, the cost is \($(40+5 x)$\).
\($R=(300-25 x) \cdot(40+5 x)$\)
\($R=12000+6000 x-1000 x-125 x^2$\\$R=-125 x^2+5000 x+12000$\\$R=125 x^2-5000 x-12000$\)
The revenue R is expressed as a function of the number x as it approaches 5. R(x)=(40+5x)(30025x) is the necessary revenue function. R(x) = (40 + 5 x)(300 25 x) is the necessary revenue function.
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what is the remainder when 2202 202 is divided by 2101 251 1? (2020amc10b problem 22) (a) 100 (b) 101 (c) 200 (d) 201 (e) 202
To solve this problem, we can use the Chinese Remainder Theorem. We need to find the remainder when 2202 202 is divided by both 2101 and 251.
First, note that 2101 and 251 are relatively prime. Therefore, by the Chinese Remainder Theorem, there exists a unique remainder between 0 and 2101 * 251 - 1 (inclusive) that satisfies the two conditions.
To find this remainder, we can use the remainders when 2202 202 is divided by 2101 and 251.
Note that 2202 is congruent to 101 (mod 2101) and 0 (mod 251). Therefore, we can use the Chinese Remainder Theorem to find that the remainder when 2202 202 is divided by 2101 * 251 is congruent to:
101 * (251^2) * (251^(-1)) + 0 * (2101^2) * (2101^(-1)) (mod 2101 * 251)
Using the fact that 251^(-1) is congruent to 201 (mod 2101) and 2101^(-1) is congruent to 1922 (mod 251), we can simplify this expression to:
101 * (251^2) * (201) + 0 * (2101^2) * (1922) (mod 2101 * 251)
Simplifying further, we get:
101 * 251 * 201 (mod 2101 * 251)
This is congruent to 101 * 201 (mod 251), which is congruent to 101 (mod 251).
Therefore, the remainder when 2202 202 is divided by 2101 251 1 is 101, which is option (b).
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Use the ordered pairs from the graph to fill in the missing values in the table.
Answer:
x y
4 180
8 360
12 540
Step-by-step explanation:
hope this helpss
Select the correct answer.
Function F is nonlinear and f(5) = 4. Which equation could represent function F ?
A. f(x) = x^2 – 11
B. f(x) = 2^x - 28
C. f(x) = 1/5x + 3
D. f(x) = 5
i know its not C
Which of the following ratios are equivalent to 20% ? 5:15 , 1:5 , 2:5 , 3:12 , 4:20
Answer:
The correct ratios are:
1:5
4:20
Step-by-step explanation:
I hope this helps! have a wonderful rest of ur day :)
and if its not too much to ask could you give me brainliest pls, im trying to rank up this month, if not then not problem! ty and let me know if you need anything else!
Answer:
1:5 4:20
Step-by-step explanation:
Because say you got 1 right out of 5 on test you get a 20%
since 20 can go into a 100 5 times if whatever number is the 1rst time it can go into 5 it is a 20 like 4:20 because 4,8,12,16,20 see that's 5 numbers and 4 is the first.
In then 1:5 is another example it can go 5 times or one more is like 10:50=20% or 15:75.
Hope this helps have a great afternoon:)
Brutus construction company takes a loan of $1,235,000 to cover the cost of a new grader. If the interest rate is 9.60% APR, and payments are made monthly for five years, what percentage of the outstanding principal does the company pay in interest each month?
Brutus Construction Company pays approximately 0.80% of the outstanding principal in interest each month.
To calculate the percentage of the outstanding principal that Brutus Construction Company pays in interest each month,
Calculate the monthly interest rate.
The Annual Percentage Rate (APR) is 9.60%.
To find the monthly interest rate, we divide the APR by 12: 9.60% / 12 = 0.80% (0.008 in decimal form).
Determine the number of months for the loan.
The loan is for five years, so the number of months is 5 years× 12 months/year = 60 months.
Calculate the monthly payment.
To calculate the monthly payment,
we can use a loan amortization formula or financial calculator.
For the purpose of this calculation,
we'll assume the loan is fully amortizing,
meaning the principal and interest are paid off by the end of the loan term.
In this case, the monthly payment can be calculated by dividing the total loan amount by the number of months:
$1,235,000 / 60 = $20,583.33.
Calculate the interest payment for the first month.
The interest payment for the first month can be calculated by multiplying the outstanding principal (initial loan amount) by the monthly interest rate:
$1,235,000×0.008 = $9,880.
Calculate the percentage of the outstanding principal paid in interest each month.
To find the percentage, we divide the interest payment for the month by the outstanding principal and multiply by 100:
($9,880 / $1,235,000) × 100 ≈ 0.80%.
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TRUE OR FALSE prove or disprove: every subgroup of the integers has finite index.
Every subgroup of the integers has finite index. It is True.
True. Proof: Let H be a subgroup of the integers. By the division algorithm, for any integer n and any positive integer d, there exist unique integers q and r such that n = dq + r and 0 ≤ r < d. In particular, if we take d = |H|, then for any integer n, we have n = dq + r for some integer q and some 0 ≤ r < |H|. This means that any integer n can be written in the form n = h + r for some integer h in H and some 0 ≤ r < |H|. Therefore, the residue classes {h + r : r = 0, 1, ..., |H| - 1} form a complete set of coset representatives for H in Z. Since there are |H| such cosets, it follows that [Z : H] = |H|. Therefore, every subgroup of the integers has finite index.
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The range of a quadratic function is determined by the…..A. x-intercepts B. y-interceptsC. vertexof the parabola.
A parabola is a figure similar to the following:
In the example given the parabola opens downwards and the vertex acts as a maximum point. We can also have the following:
This parabola opens upwards and the vertex acts as a minimum point.
Now, the range is the values of the y-variable that the function outputs. We notice that in the first case, the range is the values that are smaller than the y-coordinate of the vertex.
In the second case, we notice that the range is the values that are greater than the y-coordinate of the vertex.
Therefore, we can conclude that the range is determined by the vertex, therefore, the right answer would be C.
find the angle between the vectors. (round your answer to two decimal places.) u = (4, 3), v = (5, −12), u, v = u · v
The angle between u and v is approximately 104.66 degrees. To find the angle between two vectors u and v, we can use the dot product formula:
cos(theta) = (u · v) / (||u|| ||v||)
where ||u|| and ||v|| are the magnitudes of u and v, respectively.
First, let's compute the dot product of u and v:
u · v = \((4)(5) + (3)(-12) = 20 - 36 = -16\)
Next, we need to find the magnitudes of u and v:
\(||u||\) = sqrt(\(4^2\) + \(3^2\)) = 5
\(||v||\) = sqrt(\(5^2\) + (-12\()^2\)) = 13
Now we can substitute these values into the formula for cos(theta):
cos(theta) = \((-16) / (5 * 13) = -0.246\)
To find the angle theta, we take the inverse cosine of cos(theta):
theta = \(cos^-1\)(-0.246) = 104.66 degrees
Therefore, the angle between u and v is approximately 104.66 degrees.
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The ratio of pencils and pens in the box 3 or 2 if there is 30 pencils altogether how many pencils are there ?
Answer:
3 430534
Step-by-step explanation:
If angle 1 is 140°, then find the measure of the other angles.
Explanation:
The relationship between ∠1 and ∠2 are supplementary angles, so when you add up their measurements, it will become 180°. Simply subtract 180 and 140 to get the measure of ∠2. As well as ∠3, they're linear pairs. And they are also supplementary. To determine the measure of ∠6 and ∠7, notice the relationship between ∠2 and ∠6. As you noticed, it is corresponding angles. So they have the same measurement. If ∠2 = 40°, then ∠6 = 40°. As well as ∠7, because the relationship between ∠6 and ∠7 are vertical pairs. So the angle measurement of ∠7 is also 40°. Meanwhile, the relationship between ∠1 and ∠4 are vertical pairs. It means they also have the same measurement. So ∠4 = 140°. The relationship between ∠1 and ∠5 are corresponding angles, so they also have the same measurement. If ∠1 = 140°, then ∠5 = 140°. The relationship between ∠1 and ∠8 are alternate exterior angles, and they also have the same measurement. If ∠1 = 140°, then ∠8 = 140°.Wxndy~~