Answer:
B and D
Step-by-step explanation:
While D is a given factor for any number, 3 is the only number that 9 and 12 can be evenly divided by.
without calculation, find one eigenvalue and two linearly independent eigenvectors of a d [2 4 5 5 5 5 5 5 5 5 5 3 5]. justify your answer.
To find the eigenvalues and eigenvectors of a matrix, we need to solve the equation Ax = λx, where A is the matrix, λ is the eigenvalue, and x is the eigenvector. In this case, we have a 3x3 matrix, so we expect to find three eigenvalues and three eigenvectors.
Without performing the calculations, it is difficult to determine the exact eigenvalues and eigenvectors of matrix D. However, based on the structure of the matrix, we can make some observations. We notice that the matrix has a repeating pattern of the number 5, which suggests that 5 is a dominant eigenvalue. Additionally, the matrix is symmetric, so we know that the eigenvectors will be orthogonal.
One possible approach to finding the eigenvectors is to use the Gram-Schmidt process, which is a method for orthogonalizing a set of vectors. We can start with a vector that is parallel to one of the columns of the matrix, and then subtract the projection of that vector onto the next column to obtain a vector that is orthogonal to the first. We can continue this process for each column to obtain a set of orthogonal vectors, which will be our eigenvectors.
Based on these observations, we can hypothesize that 5 is an eigenvalue of D and that we can find two linearly independent eigenvectors by using the Gram-Schmidt process on the columns of the matrix. However, we would need to perform the calculations to confirm this hypothesis and determine the exact values of the eigenvectors.
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8. In order to reach the top of a hill which is 250 feet high, one must travel 2000 feet straight up a road
which leads to the top. Find the number of degrees contained in the angle which the road makes with the
horizontal.
7.18° the angle which the road makes with the horizontal.
Define Trigonometric functions
The trigonometric functions are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.
Given,
Height of hill = 250 feet
Length of the slope = 2000 feet
find the angle,
we know, sin(x) = perpendicular / hypotenuse
sin(x) = 250 / 2000
x = sin^-1 (0.125)
x = 7.18°
Hence, 7.18° the angle which the road makes with the horizontal.
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Which pile of laundry has more shirts?
Pile 1
Three pants two shirts
Pile 2
Two shirts 4 pants
Answer:111
Step-by-step explanation:
1111
Guess the number.The number has two digits. The sum of the digits is eight. If the digits are reversed, the results is 18 less than the original number. What is the original number?
Answer:
The number has two digits. The sum of the digits is eight. If the digits are reversed, the results is 18 less than the original number. The answer of your question is 35. !!! ;)
Mahesh borrows a certain sum of money from a bank at 9% p.a. simple interest and invests the same sum to Rakesh at 10% p.a. compound interest compounded annually Mahesh makes a profit of Rs 7,550 after 3 years. a) What is the sum that Mahesh borrowed? b) Calculate the interest that Mahesh has to pay. c) Calculate the interest that Rakesh has to pay. d) By what percent does Rakesh pay more interest than Mahesh?
The sum that Mahesh borrowed was Rs. 22,800, the interest that Mahesh has to pay was Rs. 6,492, the interest that Rakesh has to pay was Rs. 7,550, and the percentage by which Rakesh pays more interest than Mahesh was 16.3%.
a) Sum borrowed by Mahesh
Let us suppose that the principal sum borrowed by Mahesh from the bank at 9% per annum is Rs. x.
Hence, we can write that
Simple Interest = (P × R × T )/ 100
= (x × 9 × 3)/100
= 27x/100
Therefore, the amount that Mahesh has to pay after 3 years, including the interest, is
A = P + SI
= x + 27x/100
= 127x/100
Again, Mahesh invests the same amount of Rs. x to Rakesh at 10% per annum, which is compounded annually, for three years.
Hence, the total amount after three years that Rakesh has to pay Mahesh is:
Amount after 3 years = x (1 + R/100)³
= x (1 + 10/100)³ = 1.331 x
Therefore, Mahesh made a profit of Rs. 7,550 by investing Rs. x at 10% per annum, compounded annually, for three years.
Hence, we can write that
Compound Interest = Amount - Principal
CI = 1.331x - x = 0.331x
Therefore, 0.331x = Rs. 7,550=>
x = Rs. 22,800
Thus, Mahesh borrowed Rs. 22,800 from the bank.
b) Interest that Mahesh has to pay
Interest = P × R × T/100
= Rs. 22,800 × 9 × 3/100 = Rs. 6,492
Therefore, Mahesh has to pay Rs. 6,492 as interest.
c) Interest that Rakesh has to pay
The total amount that Rakesh has to pay to Mahesh is Rs. 30,350 [= (22,800 + 7,550)].
Therefore, interest that Rakesh has to pay = Total Amount - Principal
= Rs. 30,350 - Rs. 22,800 = Rs. 7,550
Therefore, Rakesh has to pay Rs. 7,550 as interest.
d) Percentage by which Rakesh pays more interest than Mahesh
Let us calculate the percentage difference between the interest paid by Rakesh and the interest paid by Mahesh.
Thus, the percentage difference can be calculated as
% Difference = (|Interest paid by Rakesh - Interest paid by Mahesh|/ Interest paid by Mahesh) × 100
% Difference = (|7,550 - 6,492|/6,492) × 100
% Difference = 16.3%
Therefore, Rakesh pays more interest than Mahesh by 16.3%.
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Bananas cost $0.56 per pound at Walmart. If I purchased bananas for $1.96, how many pounds did I buy?
Answer:
4 your welcome have a nice day
If Bananas cost $0.56 per pound at Walmart. If I purchased bananas for $1.96 then 3.5 pounds of bananas purchased.
Let x represent the number of pounds of bananas you purchased.
The cost of bananas per pound is $0.56.
Therefore, the total cost of the bananas you bought is given by:
Total cost = Cost per pound × Number of pounds
$1.96 = $0.56 × x
To solve for x, we divide both sides of the equation by $0.56:
x = $1.96 / $0.56
Using a calculator, we can calculate the value of x:
x = 3.5
Therefore, you purchased approximately 3.5 pounds of bananas.
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In which direction does the parabola y= 1/2 (x–1)2–7 open?
Answer:
Opens up
Step-by-step explanation:
Generally parabolas open up/down when you have an equation like this: \(y=a(x-h)^2+k\)
and when parabolas open to the left/right you have an equation as such: \(x=a(y-k)^2+h\)
Btw the k and h being in different places is not a typo.
Anyways the reason for why \(y=a(x-h)^2+k\) opens up, is for each x-value, you're only going to have one y-value. This is a parabola, so it's not a one-to-one function (where each output is unique), but it's still a function regardless.
But when you have this equation: \(x=a(y-k)^2+h\), there are two possible y-values, that will output the same x-value. Or in other words, each x-value (except the vertex) will have two outputs. So it's going to open sideways.
Anyways in the equation you provided we have the form: \(y=a(x-h)^2+k\) so the parabola is opening up or down. Now the only thing that really determines this is the "a" term"
when a > 0 the parabola opens up
when a < 0 the parabola opens down
Note: This only applies when the parabola opens up/down
Since we have a positive "a" term, the parabola opens up. This makes sense, since the base of the exponent: \((x-h)\) is going to be growing faster than the constant: \(-7\), so as \(x\implies \infty\) the function will be increasing. It is of course decreasing as \(x\implies1\), since at the vertex that's the minimum. The reason for this is because: \(f(h-x)=f(h+x)\) due to the symmetry of a parabola. So in our specific case: \(f(1+x)=f(1-x)\), this means that despite f(-100) having a lower x-value than f(50), it actually has a greater y-value, and has the same y-value as: f(102), since f(1-101) = f(1+101); meaning f(-100) = f(102). So as x goes towards zero, it's actually decreasing in this case. But after it passes the vertex, it will increase and go towards positive infinity.
sum and difference of two terms (x+3)(x-3)
Answer:
x power 2 and -9 is the result
Julie wanted to find out the approximate percentage of non-traditional female college students at public universities. She decided to randomly select 25 females from each university in her state and collect and analyze the data.
Select the statement that is TRUE.
The 25 females that Julie interviews are the sample, and the females that Julie does not interview are the population.
The 25 females that Julie interviews are the sample, and all female college students at state universities are the population.
All female college students at state universities are the sample, and the 25 females that Julie interviews are the population.
The female college students at state universities are the sample, and the female college students at all universities in the United States are the population.
To solve this question, we need to understand sample and population concepts.
From this, the answer is:
The 25 females that Julie interviews are the sample, and all female college students at state universities are the population.
Example:
I want to estimate the proportion of New York state residents who are Buffalo Bills fans. So i ask, lets say, 1000 randomly selected New York state residents whether they are Buffalo Bills fans, and expand this to the entire population of New York State residents, which is the population of the study.
The sample will be: 1000 randomly selected New York state residents
The population will be: All New York state residents
In this question:
Sample: 25 females from each university in her state.
Population: All female college students in her student.
Thus, the correct statement is:
The 25 females that Julie interviews are the sample, and all female college students at state universities are the population.
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2+3×9+3×5=
help me..
Answer:
44
Step-by-step explanation:
2 + 3 * 9 + 3 * 5
=> 2 + 27 + 15
=> 29 +15
=> 44
Answer:
\(2 + 3 \times 9 + 3 \times 5 \\ = 2 + 27 + 15 \\ = 44 \\ thank \: you\)
PLEASE HELP
Two projectiles are shot vertically upward at the same instant.
Projectile A's height in feet, f(t), is represented in the table, where t is the seconds since the projectile was shot off
Projectile B's height at any time t is modeled by the function
h (t)=-16t^2 +96t
How do the times at which the projectiles begin their descents compare?
SEE PHOTO
Projectile B begins its descent 1 seconds before Projectile A does.
What is y-intercept?In Mathematics and Geometry, the y-intercept of any graph or table such as a quadratic equation or function, generally occurs at the point where the value of "x" is equal to zero (x = 0).
By critically observing the table shown in the image attached above, we can reasonably infer and logically deduce the following y-intercept of Projectile A:
y-intercept = (0, 44).
Maximum height = (4, 300).
When t = 0, the y-intercept of Projectile B can be calculated as follows;
h(t) = -16t² + 96t
h(0) = -16(0)² + 96(0)
h(0) = 0.
For the maximum height, we have:
h(t) = -16t² + 96t
h'(t) = -32t + 96
32t = 96
t = 96/32
t = 3
Difference in time = 4 - 3
Difference in time = 1 seconds.
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Find the equation of the line.
Use exact numbers.
Answer:
y = - 3x + 7
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)
with (x₁, y₁ ) = (0, 7) and (x₂, y₂ ) = (2, 1) ← 2 points on the line
m = \(\frac{1-7}{2-0}\) = \(\frac{-6}{2}\) = - 3
the line crosses the y- axis at (0, 7 ) ⇒ c = 7
y = - 3x + 7 ← equation of line
The equation of the line in fully simplified slope-intercept form is y = -2.8x + 7
Writing the equation of the line in slope-intercept form.The linear graph represents the given parameter
For the graph, we have the points
(0, 7) and (25, 0)
A linear equation is represented as
y = mx + c
Where
c = y when x = 0
So, we have
y = mx + 7
Using the point (2.5, 0) on y = mx + 7, we have
m(2.5) + 7 = 0
2.5m + 7 = 0
Evaluate
m = -2.8
So, we have
y = -2.8x + 7
Hence, the equation of the line in fully simplified slope-intercept form is y = -2.8x + 7
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The ratio of hydrogen atoms to nitrogen atoms in a container is 2:3 what is the value of 2:3
The value of 2:3 can be written as a fraction: 2/3.
What is the ratio?
In mathematics, a ratio is a comparison of two quantities, often expressed as a fraction or using the colon (:) symbol. Ratios are used to indicate the relative size or amount of two or more things.
For example, the ratio of the length of a rectangle to its width can be expressed as a fraction, where the numerator represents the length and the denominator represents the width.
The ratio of hydrogen atoms to nitrogen atoms is 2:3.
This means that for every 2 hydrogen atoms, there are 3 nitrogen atoms in the container. The value of the ratio 2:3 is a way of expressing the relative quantity of hydrogen atoms to nitrogen atoms in a simplified form. It can also be written as a fraction: 2/3.
Hence, the value of 2:3 can be written as a fraction: 2/3.
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Find a formula for the nth term in this
arithmetic sequence:
a₁ = 7, a2 = 4, a3 = 1, a4 = -2, ...
an
=
[?]n +
Answer:
\(a_{n} = -3n + 10\)
Step-by-step explanation:
The arithmentic function formula is:
\(a_{n} = a_{1} + d(n-1)\)
Let's plug in what we know. \(a_{1}\) (the first term in our sequence) is 7. d (the common difference) is -3. This means we are subtracting 3 every time.
Plugging that in to the formula, we get
\(a_{n} = 7 -3(n-1)\)
Now we distribute and combine like terms.
\(a_{n} = 7 - 3n +3\)
\(a_{n} = 10 - 3n\)
Change the order to fit the format and you get
\(a_{n} = -3n + 10\)
Expand the following equation (2x-3)^2
Answer:
4x^2 - 12x + 9
Explanation:
(2x - 3)^2
(2x - 3)(2x - 3)
2x(2x - 3) -3 (2x - 3)
4x^2 - 6x - 3 (2x - 3)
4x^2 - 6x - 6x + 9
4x^2 - 12x + 9
I need help please.
Answer:
B
Step-by-step explanation:
Which value of x makes this inequality true? x+9<4x
A.4
B.1
C.3
D.2
Answer:
A. 4
Step-by-step explanation:
Given inequality:
\(x+9 < 4x\)
Rearrange the inequality to isolate x.
Subtract x from both sides of the inequality:
\(\begin{aligned}x+9-x & < 4x-x\\9& < 3x\end{aligned}\)
Divide both sides of the inequality by 3:
\(\begin{aligned}\dfrac{9}{3}& < \dfrac{3x}{3}\\\\3& < x\\\\x& > 3\end{aligned}\)
So the values of x that make the inequality true are:
Any value of x that is greater than 3.Therefore, from the given answer options, the value of x that makes the inequality true is x = 4.
To check this, substitute x = 4 into the inequality:
\(\begin{aligned}x+9& < 4x\\x=4\implies 4+9& < 4(4)\\13& < 16\end{aligned}\)
As 13 is less than 16, the inequality is true when x = 4.
Simon drove 55 miles per hour for 4 hours then 65 miles per hour for 3 hours how far did Simon drive in all
Answer:
415 miles
Step-by-step explanation:
Start with the speed equation:
speed = distance/time
Now solve the speed equation for distance:
distance = speed × time
Apply the speed equation solved for distance to the two parts of the trip.
4 hours at 55 mph:
distance = 55 mph × 4 hours = 220 miles
3 hours at 65 mph:
distance = 65 mph × 3 hours = 195 miles
Add the two distances to find the total distance:
total distance = 220 miles + 195 miles = 415 miles
Answer: 415 miles
Answer:
415 miles
Step-by-step explanation:
Simon drove 55 miles per hour for 4 hours then 65 miles per hour for 3 hours.
How far did he drive?
d=rt
For the first part of the trip:
d = 55 * 4 = 220 miles
For the second part of the trip:
d = 65*3 =195 miles
Add the miles together
220+195 = 415 miles
i need to know £400 in euros and how to convert it
Answer:
449.40 Euro
Step-by-step explanation:
1 pound=1.12 euro
400*1.12=
Anyone mind helping I’ll give you the crown
b) Because it REFLECTING which means that is going across
Answer:
D is correct
Step-by-step explanation:
because the ponit started in quadrant 1 and the only thing that could change is the y-axis and the y-axis aloney went down and quadrant 4 is the only quadrant above 1 so that the answer
D
4
E
6
С
Find the area of rectangle ABCD
O A 15 square units
B. 20 square units
C. 30 square units
D. 40 square units
E 50 square units
Pls help
Answer:
b 2o i think sorry if its wrong
A linear function has a slope of -7 /9 and a y-intercept of 3. How does this function compare to the linear function that is represented by the equation y + 11 = -7/9 (x minus 18)?
Answer:
both functions have the same graph
Step-by-step explanation:
The first function is described in terms of its slope and y-intercept, so can be written in slope-intercept form as ...
y = mx + b . . . . m = slope (-7/9); b = y-intercept (3)
y = -7/9x +3
__
The second function is written in point-slope form:
y -k = m(x -h) . . . . m = slope (-7/9), point = (h, k) = (18, -11)
y +11 = -7/9(x -18)
If we rearrange the second equation to the form of the first, we get ...
y = -7/9x +14 -11 . . . . eliminate parentheses, subtract 11
y = -7/9x +3 . . . . . . . matches the equation of the first function
__
Both functions describe the same relation.
26. What 5-digit number has the following features:
If we put the numeral 1 at the beginning, we get a number three times smaller than if
we put the numeral 1 at the end of the number?
In other words, if you think the answer is the number 34567, then you want the
number 134567 to be one third of 345671, but it isn't, so what's the number?
uppose that Bianca and Rosa each own a small farm. They both produce milk and apples. Each hour, Bianca can either produce 1 gallon of milk or 1 pound of apples, and Rosa can either produce 2 gallons of milk or 4 pounds of apples. Each works 4 hours a day.a. Draw Bianca’s daily PPC, placing gallons of milk x-axis and pounds of apples onthe y-axis. Label the x-intercept, the y-intercept and the slope of the PPC. Be sure to also label your axes.b. Draw Rosa’s daily PPC, placing gallons of milk x-axis and pounds of apples on the y-axis. Label the x-intercept, the y-intercept and the slope of the PPC. Be sure to also label your axes.c. What is the opportunity cost to each of 1 pound of apples?d. What is the opportunity cost to each of 1 gallon of milk?e. Who has the comparative advantage in producing apples? Briefly explain.f. Who has the comparative advantage in producing milk? Briefly explain.g. Who has the absolute advantage in producing apples? Briefly explain.h. Who has the absolute advantage in producing milk? Briefly explain.i. Are there gains from specialization and trade in this case? If not, explain why not. If so, in which good should each specialize?j. Draw the joint PPC for Bianca and Rosa, placing gallons of milk on the x-axis and pounds of apples on the y-axis. Be sure to label, the x-intercept, the y-intercept, the slope along each segment of the PPC and the point at which each isspecializing in the activity at which he or she has a comparative advantage. Be sure to also label your axes.k. Suppose that every day, Bianca and Rosa each spend 2 hours producing milk and2 hours producing apples, so that together they produce 6 gallons of milk and 10 pounds of apples. To show that this is not an efficient use of their time, find another way to divide up their time between producing milk and producing apples so that together they still can produce 6 gallons of milk but more than 10 pounds of apples.
For the graph formed by Bianca weight and height which is represented as x= 130 a vertical line describes that it has no slope.
Graph representing the weight and height of Bianca .
x-axis represents the weight in pounds of Bianca.
y-axis represents the height in inches of Bianca.
Line shown on graph is
x = 130 a vertical line
When a vertical line is represented on graph it means
x₁ = x₂ = x₃ =....= 130
y-coordinates keep on changing.
Slope = (y₂ - y₁ ) / ( x₂ - x₁ )
As x-coordinates are constant it means denominator is zero.
Line has no slope.
Therefore, graph representing weight and height with x= 130 shows it has no slope.
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The given question is incomplete, I answer the question in general according to my knowledge:
Bianca graphed her weight and height over the past several years. A graph titled Bianca's Height and Weight has weight in pounds on the x-axis and height in inches on the y-axis. A vertical line is at x = 130. Which describes the slope of the line on Bianca’s graph? Its slope is positive. Its slope is negative. Its slope is zero. It has no slope.
Which statement about the location of √7 on the number line is true?
A= It is located at the number 7 on the number line.
B= It is located at the number 3.5 on the number line.
C= It is located between the numbers 2 and 3 on the number line.
D=It is located between the numbers 4 and 9 on the number line
Which of the following is a unit in abstract mathematical system subject to the laws of arithmetic? A. number B. natural number C. integer D. negative number E. rational number
(A) Numbers are a unit in an abstract mathematical system that follow arithmetic principles.
What is a number?A number is a numerical unit of measurement and labeling in mathematics.
The natural numbers 1, 2, 3, 4, and so on are the first examples.
Number words are a linguistic way to express numbers.
Most commonly, specific numbers can be represented using symbols known as numerals; for instance, the numeral "5" stands in for the number five.
In an abstract mathematical system, numbers are a unit governed by the rules of arithmetic.
Basic numerals are frequently grouped in a numeral system, which is an ordered manner to represent any number because only a small number of symbols can be learned.
Therefore, (A) numbers are a unit in an abstract mathematical system that follow arithmetic principles.
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kira´s best distance in the long jump is 3 7/10 meters.
Which decimal is equivalent to 3 7/10?
help me pleaseee
Answer:
3.7
Step-by-step explanation:
In ADEF, f= 33 inches, ZF=140° and ZD=5°. Find the length of e, to the nearest 10th
of an inch.
The length of e is 29.53 inches.
what is Sine Law?In the following, the law of sine is presented in detail: In a triangle, the sine of angle A divided by side "a" equals the sine of angle B divided by side "b" equals the sine of angle C divided by side "c".
Given:
f= 33 inches
<F= 140, <D = 5
Now,
<E= 180 - (<F+ <D) = 180 - (140 + 5) = 35
Using Sine law
sin F / f = sin E/ e
sin 140 / 33 = sin 35 / e
0.642/ 33 = 0.573 / e
0.0194 e= 0.573
e= 29.53 inches
Hence, the length of e is 29.53 inches.
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Can someone answer this
The order of the graphs from largest to lowest correlation coefficients is:
Graph D, Graph A, graph C, graph B.
Which graph has the largest correlation coefficient?The correlation coefficient between two variables is a coefficient that tells us "how much" these variables relate.
So, in the case for linear correlation, as "more linear" the data appears to be, a large correlation is between the two variables.
With that in mind, we conclude that the order of the graphs (going for larger correlation coefficient to smaller correlation coefficient) is:
Graph D, Graph A, graph C, graph B.
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Suppose you have a treatment that you suspect may alter performance on a certain task. You compare the mean of your sample to the norm. Further, suppose you use az-test for means and your result is statistically significant (z=2.70,p<0.05, one-taifed). Glven your statistically significant result, indicate which (if anyl of the following statements is true. Check each statement that is true. In other words, you may check none, one, several, or all of the statements. You have absoluidy disproved the null hypothesis ghat is, there is no ditference between the population means). You have found the protablity of the null hypothesis being true.
All of the assertions are false. A statistically significant finding does not necessarily imply that the null hypothesis has been proven incorrect, nor does it indicate how likely it is to be true.
What is a norm defined as?Generally speaking, the word "norm" describes something that is customary, typical, anticipated, or standard. Norms are established definitions of beneficial attitudes and actions that ought to be commonplace, or "the norm," whenever a group is working together. They apply to cooperation and collaboration.
What Is a Z-Test?When the variances are known and the sample size is large, a z-test is a statistical test that is used to assess whether two population means differ from one another.
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