The value of [v]B1 is [[1][0]][[0][0]]
Suppose [v]B2 is as follows:
[v]B2 = [[11][14]]
[13][14]]
[7][6]]
[10]]
If the ordered bases are B1 = {a, b} and B2 = {c, d}, we want to find [v]B1.
To find [v]B1, we need to express the columns of [v]B2 in terms of the basis vectors of B1.
The first column of [v]B2 is [11, 13, 7, 10]. We want to express this column in terms of the basis vectors of B1: [a, b].
To do this, we set up the following equation:
[11][13][7][10] = [a][b]
Solving this equation, we find that:
11a + 13b = 11
13a + 14b = 13
7a + 6b = 7
10a = 10
From the last equation, we can see that a = 1.
Substituting this value of a into the first three equations, we can solve for b:
11 + 13b = 11
13 + 14b = 13
7 + 6b = 7
Simplifying these equations, we find that b = 0.
Therefore, [v]B1 is as follows:
[v]B1 = [[1][0]]
[0][0]]
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how many different positive four digit integers contain each of the digits 0, 1, 2, and 3 exactly once?
The number of different positive four digit integers contain each of the digits 0, 1, 2, and 3 exactly once is 18
The given digits = 0, 1, 2 and 3
Total number of digits = 4
We need to create different four digit integers contain each of the digits 0, 1, 2 and 3 exactly once
Here we have to use the permutation
Here first number cannot be zero
Number of digits possible in thousands place = 3
Then different positive four digits integers = 3 × 3 × 2 × 1
= 18
Therefore, 18 different four digits numbers can be formed by using the given digits
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HELLLPPP Quick
What is the mean of this data set?
12, 17, 16, 10, 20
35
25
15
Answer:
15
Step-by-step explanation:
The numbers in the given data = 12, 17, 16, 10, 20
Total number = 5
12 + 17 + 16 + 10 + 20 = 75
Mean = 75/5
Mean 15
Let L be the linear operator in R2 defined by
L(x)=(3x1-2x2,9x1-6x2)T
Find bases of the kernel and image of L .
Kernel: ___________
Image:____________
Let L be the linear operator in R2 defined by L(x) = (3x1 - 2x2, 9x1 - 6x2)T. The bases of the kernel and image of L are to be determined. To find the bases of the kernel and image of L, we first recall the definitions of kernel and image of a linear operator. Definition of Kernel: Let T be a linear operator on a vector space V. Then the kernel of T, denoted as ke T, is the subspace of V that consists of all vectors that are mapped to the zero vector of the range of T. Definition of Image: Let T be a linear operator on a vector space V. Then the image of T, denoted as im T, is the subspace of the range of T consisting of all vectors that are mapped by T to some vectors in the range of T. The kernel and image of L are given as follows. Kernel of L: For L(x) = (3x1 - 2x2, 9x1 - 6x2)T to be zero vector, we must have 3x1 - 2x2 = 0 and 9x1 - 6x2 = 0, which implies that x1 = (2/3)x2.
Therefore, a typical element of the kernel of L can be expressed as (x1, x2)T = (2/3)x2(1, 3)T, where x2 is a scalar. Hence, a basis for the kernel of L is {(1, 3)T}. Image of L: The image of L is the subspace of R2 consisting of all vectors that can be expressed in the form L(x) = (3x1 - 2x2, 9x1 - 6x2)T, where x is any vector in R2. It follows that any vector in the image of L is of the form (3x1 - 2x2, 9x1 - 6x2)T = x1(3, 9)T + x2(-2, -6)T. Therefore, a basis for the image of L is {(3, 9)T, (-2, -6)T}.Hence, the bases of the kernel and image of L are as follows. Kernel: {(1, 3)T}Image: {(3, 9)T, (-2, -6)T}.
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what is 3n? i dont know how to do matrices
Answer:
Step-by-step explanation:
Write an equation for a line perpendicular to y=2x+2 and passing through the point (6,-2)y =
The equation of the line is given as,
\(y=2x+2\)According to the slope-intercept form, the equation of a line with slope 'm' and y-intercept 'c', is given by,
\(y=mx+c\)Comparing with the given equation, the slope of the given line is,
\(m=2\)Theorem: The product of two slopes of two perpendicular lines is -1 always.
Let the slope of the perpendicular line be (m'), and 'b' be the y-intercept. Then, it follows that,
\(\begin{gathered} m^{\prime}\cdot m=-1 \\ m^{\prime}\cdot(2)=-1 \\ m^{\prime}=\frac{-1}{2} \end{gathered}\)The equation of this perpendicular line is given by,
\(\begin{gathered} y=m^{\prime}x+b^{\prime} \\ y=(\frac{-1}{2})x+b^{\prime} \end{gathered}\)Given that the perpendicular lines pass through the point (6,-2), so it must also satisfy its equation,
\(\begin{gathered} -2=(\frac{-1}{2})(6)+b^{\prime} \\ -2=-3+b^{\prime} \\ b^{\prime}=-2+3 \\ b^{\prime}=1 \end{gathered}\)Substitute this value back in the equation of the perpendicular line,
\(y=\frac{-1}{2}x+1\)Thus, the equation of a line perpendicular to the given line and passing through the given point is obtained as,
\(y=\frac{-1}{2}x+1\)Step by step solve 18×20, I find double 18 and then multiply by 10
Add or subtract.
1 /1-√5+ 1 / 1+√5
The sum of the fractions 1 / (1 - √5) and 1 / (1 + √5) is equal to 1 + √5. To add or subtract the given expression, 1 / (1 - √5) + 1 / (1 + √5), we need to find a common denominator. The common denominator for these two fractions is (1 - √5)(1 + √5), which simplifies to (1 - √5)(1 + √5) = 1 - √5 + √5 - 5 = -4.
Now, let's rewrite the fractions using the common denominator:
1 / (1 - √5) = (-4) * 1 / (1 - √5) = -4 / (1 - √5)
1 / (1 + √5) = (-4) * 1 / (1 + √5) = -4 / (1 + √5)
Next, we can add the two fractions:
-4 / (1 - √5) + -4 / (1 + √5)
To add fractions with different denominators, we need to find a common denominator. The common denominator for (1 - √5) and (1 + √5) is (1 - √5)(1 + √5), which we found earlier to be -4.
Multiplying each fraction by the appropriate form of 1 will allow us to obtain the common denominator:
(-4 / (1 - √5)) * ((1 + √5) / (1 + √5)) = (-4(1 + √5)) / ((1 - √5)(1 + √5)) = (-4 - 4√5) / (-4) = 1 + √5
Therefore, the sum of the fractions 1 / (1 - √5) and 1 / (1 + √5) is equal to 1 + √5.
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A sum of money is divided amongst Rony, Lisa and Tulip in the ratio 10: 7: 5. If
Lisa gets $20 more than Tulip, find the total sum of money shared and the amount
Rony gets.
Answer:
$62.85
Step-by-step explanation:
Given data
ratio= 10: 7: 5
Total ratio= 10+7+5= 22
Lisa= $20
Her proportion of the ratio = 7
Applying the part to all method
Let the total amount shared be x
7/22= 20/x
cross multiply
7x= 22*20
7x= 440
divide both sides by 7
x= 440/7
x= 62.85
After examining the functions f(x) = In(x + 2) and g(x) = e*- over
the interval (-2,3], Lexi determined that the correct number of
solutions to the equation f(x) = g(x) is
(1) 1
(3) 3
(2) 2
(4) O
The number of solutions to the equation f(x) = g(x) is option (2) 2 is the correct answer.
What is graph of a function?A graph can be defined as a pictorial representation or a diagram that represents data or values in an organized manner. The graph of a function f is the set of all points in the plane of the form (x, f(x)).
For the given situation,
The functions f(x) = In(x + 2) and g(x) = e^x - 1 over the interval (-2,3].
Plot the two functions f(x) and g(x) in the graph as shown below.
In the given interval (-2,3], these two functions intersect at two points.
The point of intersection gives the solution of the function.
Hence we can conclude that the number of solutions to the equation f(x) = g(x) is option (2) 2 is the correct answer.
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7. Emma buys a game for $26.84. She pays for the game with a $20 bill and two $5 bills. How much change should she receive? A $1.84 B $3.16 C $3.26 D $3.84
Answer:
the answer is D have a good day
A company makes wax candles shaped like rectangular prisms. Each candle is 7 cm long, 2 cm wide, and 10 cm tall. If the company used 5740 cm of wax, how
many candles did they make?
Answer:
They made 41 candles.
Step-by-step explanation:
v=l×w×hv=10×7×2v=140 cm cubedlastly I divided 5740 by 140 ( the volume of one candle)therefore I got 41 candles were made from 5740 cm cubed of wax
The measures of the obtuse angles in the hexagon are 30 more than twice the measures of the acute angles. Write and solve a system of equations to find the measures of all the angles.
a. The system of equations is
y = 2x + 30 (1) and x = 30(n - 2) (2)b. For the hexagon
the 6 acute angles are 120° and the 6 obtuse angles are 270°What is a hexagon?A hexagon is a regular polygon with six sides.
a. How to write a system of equations to find the measures of all the angles?Let x be the acute angles of the hexagon and y be the obtuse angles of the hexagon.
Since he measures of the obtuse angles in the hexagon are 30 more than twice the measures of the acute angles, we have that
y = 2x + 30
Also, we know that the sum of interior angles of a polygon is (n - 2)180.
Since x is the interior angle and n = 6, we have that
6x = (n - 2)180.
x = (n - 2)180/6
x = 30(n - 2)
So, the system of equations is
y = 2x + 30 (1) and
x = 30(n - 2) (2)
b. How to solve a system of equations to find the measures of all the angles.Since
y = 2x + 30 (1) and
x = 30(n - 2) (2)
Substituting n = 6 into (2), we have
x = 30(6 - 2)
x = 30(4)
x = 120
Substituting x = 120 into (1), we have
y = 2x + 30
y = 2(120) + 30
y = 240 + 30
y = 270
So,
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Aggregate Demand (AD)=C+I+G+ (X-M). X = O a. X factor b. exchange c. exports
Aggregate Demand (AD) is a macroeconomic concept that represents the total demand for goods and services in an economy. The X factor in the AD equation represents exports, which are an important part of the economy.
AD is calculated by adding up the individual components of demand, which include consumer spending (C), investment spending (I), government spending (G), and net exports (X-M). The X-M component represents the difference between exports (X) and imports (M).
The X component in the equation represents exports, which are the goods and services produced domestically and sold to foreign countries. Exports are an important part of the economy as they generate income and create jobs. The M component in the equation represents imports, which are the goods and services purchased from foreign countries and consumed domestically. Imports can have a negative impact on the economy as they represent a drain on resources and can lead to a trade deficit. The X factor in the equation is used to represent exports because it is a variable that can change over time. Factors that can affect exports include exchange rates, tariffs, and global demand for certain products. If the exchange rate between two currencies changes, it can make exports more or less expensive for foreign buyers, which can affect the level of exports. Tariffs are taxes on imports, which can make domestic products more competitive in foreign markets.
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Write the matrix equation that represents the system, and then solve if possible. State each of the rows, and then the
solution.
8x+7y=5
4x-9y=65
Answer:
x=5 y=-5
Step-by-step explanation:
what is 24/182 !!!!!!!!!!!!!!!!!
Answer:
24/182 = 12/91
Step-by-step explanation:
Identity the property shown in the example below.
-8+8= 0
Answer:
Commutative Property
Step-by-step explanation:
-8+8 = 0
0 = 0
– g+15>13
please help meee
Answer:
g>2
Step-by-step explanation:
-g>13-15
-g>-2
g>2
you are welcome
Answer:
g < 2
Step-by-step
F(x) = x^2 + 2x + 3
G(x) = x^2 + 2x - 4
Find (f o g)(-5)
A. 349
B. 363
C. 160
D. 146
What is the volume of the figure?
The volume of the irregular figure can be found to be 59 cm ³.
How to find the volume ?The shape is irregular which means that the best way to find the volume would be to split the shape into two shapes. The two shapes we will go with are two rectangular prisms.
The volume of Prism 1 is:
= Width x Height x Length
= 1 x 3 x 8
= 24 cm ³
The volume of prism 2 would be:
= 5 x 1 x 7
= 35 cm ³
The volume of the full irregular shape is :
= Volume of prism 1 + volume of prism 2
= 24 + 35
= 59 cm ³
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Find the x-values (if any) at which f is not continuous. If there are any discontinuities, determine whether they are removab. (Enter your answers as comma-separated lists. If an answer does not exist, enter DNE.) f(x)= 4−x 2
9
removable discontinuities x= nonremovable discontinuities x= x
The given function is f(x) = (4-x)/29. We need to find the x-values where f is not continuous and determine whether the discontinuities are removable or nonremovable.
For this function, there are no nonremovable discontinuities. The only type of discontinuity that could occur is a removable discontinuity. This occurs when a point is undefined, but the limit exists and is finite. In other words, the function can be made continuous by redefining it at that point.
To find any possible removable discontinuities, we need to find the values of x for which the denominator becomes zero, because division by zero is undefined. The denominator is always 29, which is never zero, so there are no values of x for which the denominator is zero. Therefore, there are no removable discontinuities.
In conclusion, the function f(x) = (4-x)/29 is continuous for all values of x, and there are no removable or nonremovable discontinuities.
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a golfer claims that his average golf score at the course he plays regularly is less than 90. the correct hypothesis statement for this golfer to prove his claim would be
The correct hypothesis statement for this golfer to prove his claim would be:
\(H_{0} :u\geq 90\)
\(H_{1} :u < 90\)
The golfer claims that his average score is less than 90.
Therefore, the null hypothesis is the opposite of what he claims
Null hypothesis \(H_{0}\) is average score \(u\) is greater than or equal to 90:
\(u \geq 90\)
\(H_{0} :u\geq 90\)
Alternative hypothesis \(H_{1}\) is then the opposite of null hypothesis.
Hence alternate hypothesis \(H_{1}\) is u< 90
\(H_{1} :u < 90\)
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helppppppppppp meeeee
Answer:
y = -2x + 3
Step-by-step explanation:
Let's just put the three points together.
(-1, 5) (-4, 11) (-7, 17)
First, let's find the slope with y2 - y1/x2 - x1
Plug in using (-1, 5) and (-4, 11)
11 - 5/-4 + 1 = 6/-3 (simplify)
-2 is the slope
Now plug in (-7, 17) in the equation to get b or the y-intercept)
y = mx + b
17 = -2(-7) + b
17 = 14 + b (subtract 14 on both sides)
3 = b
y = -2x + 3
4 less than half a number is 21
Answer: X=50
Step-by-step explanation:
Data: 4 less than half of a number(x) is 21
Step one, make an equation
(x/2)-4=21
The reason for this is that since we know that 21 is 4 less than half the number(x) we can assume that dividing x by 2 will get half of it and by subtracting 4, we can get 21 which why it equals 21. By having it in an equation, it makes it easier to solve.
Step two, Start isolating x by adding 4 on both sides
(x/2)-4+4=21+4=(x/2)=25
The reason for this is that we have to find what x is which is done by isolating it. So if you add 4, you get rid of the -4 which helps isolate x and what you do to one side, you do to the other so you add 4 to 21 as well
Step three, multiply by 2 on both sides
(x/2)x2=25x2=X=50
The reason for this is that /2 is next to x so to isolate you have to get rid of it by multiplying by 2 and since what you do to one side you do to the other, you multiply 25 by 2 to get 50.
Answer: X=50
I hope this helps!
the distance d in miles that can be seen on the surface of the ocean is given by , where h is the height in feet above the surface. how high (to the nearest foot) would a platform have to be to see a distance of 19.5 miles?
It seems that the formula for the distance (d) in miles that can be seen on the surface of the ocean from a certain height (h) in feet is missing. However, based on the given information, we can assume that the formula is:
d = sqrt(1.5h)
To find the height (h) in feet required to see a distance of 19.5 miles, we can rearrange the formula to solve for h:
h = (d^2 / 1.5)
Substituting d = 19.5 miles, we get:
h = (19.5^2 / 1.5) = 253.5 feet
Therefore, the platform would have to be at a height of approximately 253.5 feet to see a distance of 19.5 miles on the surface of the ocean.
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QUICKK Plz help and explain
Answer:
24
Step-by-step explanation:
Does anyone know this? :)
Option d. "The height of the box is between 8 and 16 inches" is not a valid conclusion.
What is volume ?
Volume is a measure of the amount of space occupied by an object or a substance. It is usually expressed in cubic units, such as cubic meters, cubic centimeters, cubic inches, etc. The volume of a three-dimensional object, such as a cube, sphere, or cylinder, is calculated by measuring the length, width, and height or radius of the object and applying the appropriate formula.
According to the question:
Option d. "The height of the box is between 8 and 16 inches" is not a valid conclusion.
From the given function V = h(16-2h)², we can see that the height of the box is represented by "h" and it can take values between 0 and 8 inches, since the height cannot be negative and must be less than or equal to the side length of the square base (which is 16-2h).
The width and length of the box are both represented by 16-2h, as the base is a square.
Therefore, option d is not valid because it contradicts the valid range of values for the height of the box.
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Encuentra en cada producto notable el error o errores,enciérralo y escribe el resultado correcto.
Given:
The equation is:
\((2x+3y)(2x-3y)=4x^2+6y^2\)
To find:
The error in the given equation and correct it.
Solution:
We have,
\((2x+3y)(2x-3y)=4x^2+6y^2\)
Taking left-hand side, we get
\(L.H.S.=(2x+3y)(2x-3y)\)
\(L.H.S.=(2x)^2-(3y)^2\) \([\because a^2-b^2=(a-b)(a+b)]\)
\(L.H.S.=(2)^2(x)^2-(3)^2(y)^2\) \([\because (ab)^x=a^xb^x]\)
\(L.H.S.=4x^2-9y^2\)
It is not equal to right-hand side \(4x^2+6y^2\). In the right hand side, there must be a negative sign instead of positive sign.
Therefore, \((2x+3y)(2x-3y)=4x^2-6y^2\).
John is saving to buy a new car that will cost him $24,000. John started his savings at the beginning of the school year and has been able to accumulate $1000 after the first month. John plans to continue his savings at a rate proportional to the amount he still needs to save. Determine John's savings amount as function of time Hint: A variable y is said to be proportional to a variable x if y=cx for some constant c.
John's savings amount as a function of time is S(t) = $24,000 / 25. Initially, he needs to save $24,000 for a new car. After the first month, he has saved $1,000. The savings amount is directly proportional to the time elapsed. The constant of proportionality is 1/24. Thus, John's savings amount can be determined based on the remaining amount he needs to save.
John's savings amount can be represented as a function of time and is proportional to the amount he still needs to save. Let's denote the amount John needs to save as N(t) at time t, and his savings amount as S(t) at time t. Initially, John needs to save $24,000, so we have N(0) = $24,000.
We know that John has saved $1,000 after the first month, which means S(1) = $1,000. Since his savings amount is proportional to the amount he still needs to save, we can write the proportionality as:
S(t) = k * N(t)
where k is a constant of proportionality.
We need to find the value of k to determine John's savings amount at any given time.
Using the initial values, we can substitute t = 0 and t = 1 into the equation above:
S(0) = k * N(0) => $1,000 = k * $24,000 => k = 1/24
Now we have the value of k, and we can write John's savings amount as a function of time:
S(t) = (1/24) * N(t)
Since John's savings amount is proportional to the amount he still needs to save, we can express the amount he still needs to save at time t as:
N(t) = $24,000 - S(t)
Substituting the expression for N(t) into the equation for S(t), we get:
S(t) = (1/24) * ($24,000 - S(t))
Simplifying the equation, we have:
24S(t) = $24,000 - S(t)
25S(t) = $24,000
S(t) = $24,000 / 25
Therefore, John's savings amount at any given time t is S(t) = $24,000 / 25.
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Perform the operation and simplify such that
The value οf a, b, and c are 3, 5, and 25 respectively.
What is an equatiοn?There are many different ways tο define an equatiοn. The definitiοn οf an equatiοn in algebra is a mathematical declaratiοn that illustrates the equality οf twο mathematical expressiοns.
The given equatiοn is
1/(x + 5) + 2/(x -5) = (ax + b)/ (x² - c)
Sοlve the left-hand side οf the equatiοn:
L.H.S = 1/(x + 5) + 2/(x -5)
= [x-5 + 2(x+5)]/(x + 5)(x -5)
= [x-5 + 2x+ 10]/(x + 5)(x -5)
Cοmbine like terms:
= [3x + 5]/(x + 5)(x -5)
Nοw apply fοrmula (a-b)(a+b) =a² - b²:
= [3x + 5]/(x² - 5²)
= [3x + 5]/(x² - 25)
Put 1/(x + 5) + 2/(x -5) = [3x + 5]/(x² - 25) in the given equatiοn:
[3x + 5]/(x² - 25) = (ax + b)/ (x² - c)
Nοw cοmpare bοth sides:
a = 3
b = 5
c= 25
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Solve these please and explain how you get it i’ll give you 35 points!
Answer:
hi, first question's answer B.
because if you want to draw a triangle, there is have to be some rules. like can you draw a triangle 2,2,20? that could be impossible because all the edges have to intersect. think a triangle and it has 3 edges. they are A,B,C
if you wanna write random numbers, you have to do this.
A+B>C>|A-B|
A+C>B>|A-C|
C+B>A>|C-B|
soo, 7+11= 18 and 11-7=4
second question's answer is this:
60+x+32+90=180(if you wonder where is the 90 came from, the triangle's one side has square. that mean its 90°.
182+x=180
x=-2
if you have questions about these questions, you can ask me.
good luck(: