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Linear Algebra

12/04/19

Help with linear algebra

is the function below a linear transformation? why or why not? T:C3 ---> C2, T([x1][x2][x3]) = [-1x1-7x2+3x3],[-1x1+8x3-5]

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Linear Algebra Problem Solving Word Problems

12/04/19

Norman and Suzanne own 27 shares of a fast food restaurant stock and 61 shares of a toy company stock. At the close of the markets on a particular day in 2004, their stock portfolio consisting of... more

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Linear Algebra

12/03/19

Linear Algebra Question

. Let 𝑊 be the set of all matrices of the following form with real numbers 𝑎, 𝑏, 𝑐, 𝑑. [ 𝑎 𝑏 0 𝐴 = | 𝑏 𝑐 𝑑 0 𝑑 𝑎 ] a) Determine whether the set 𝑊 is a subspace of 𝑀33 (vector... more

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Linear Algebra Algebra College Algebra Algebra College

12/01/19

How to solve: A movie theater has a seating capacity of 355. The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults.

A movie theater has a seating capacity of 355. The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults. There are half as many adults as there are children. If the total... more

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Linear Algebra

12/01/19

cost for each pound of jelly beans. cost for each pound of almonds

A store is having a sale on jelly beans and almonds. For 9 pounds of jelly beans and 7 pounds of almonds, the total cost is $35. For 3 pounds of jelly beans and 5 pounds of almonds, the total cost... more

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Linear Algebra Math

11/26/19

Linear Algebra Question

Let A =-17 -1510 8Find a matrix S, a diagonal matrix D, and S^-1 such that A=SDS^-1.

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Linear Algebra Algebra 1 Algebra Word Problem

11/20/19

Linear equation word problem

Jasmine has been working to save money and wants to have an equation to model the amount of money in her bank account. She has been depositing $175 a month consistently, she doesn’t remember how... more

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Linear Algebra

11/19/19

Find all values of a that make det(A)=0.

A={[a,a,4],[3,-2,-2],[5,1,a]}Each set within the [ ] are the columns of matrix A.

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Linear Algebra

11/19/19

Find the area of the parallelogram with vertices at (3,−4), (6,5), (−9,−15), and (−6,−6).

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Linear Algebra

11/14/19

i need equation answers

What is the value of x in the equation , when y = 3? is their a answer

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Linear Algebra Math Calculus Mathematics

11/13/19

Linear approx questions

Hello,I would appreciate any help with this. I am just having trouble navigating these type of questions:1.Suppose that we don't have a formula for g(x) but we know that g(2) = −1 and g'(x)=sqrt(... more

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Linear Algebra

11/13/19

Prove that if w⃗ is orthogonal to each of the vectors in the set S = {⃗v1, ⃗v2, . . . , ⃗vm}, then w⃗ is also orthogonal to each of the vectors in the subspace W = SpanS of V .

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Linear Algebra

11/13/19

If the vectors ⃗u =(1 2) and ⃗v =(2 −4) are orthogonal with respect to the weighted inner product ⟨⃗u, ⃗v⟩ = w1u1v1 + w2u2v2, what must be true about the weights w1, w2?

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Linear Algebra Math Calculus

11/10/19

Help me with my math problem

I have a matrix of Ax=b. That is 3X4. With the entry x+3y+7z=12. 1x+4y+10z=15. And 2x+3y+5z=X or we can call X really b3. I believe I need to somehow reduce to row echelon and solve for b3 by... more

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Linear Algebra Math Science Calculus

11/10/19

Matrix solve for b

I have a matrix of Ax=b. That is 3X4. With the entry x+3y+7z=12. 1x+4y+10z=15. And 2x+3y+5z=X or we can call X really b3. I believe I need to somehow reduce to row echelon and solve for b3 by... more

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Answers •1

Linear Algebra

11/05/19

Graphing systems of linear equations

The sum of Sherance and John’s ages is 70. John is four times as old is Sharon. If you let S equal share his age and TJ equal John’s age then the problem can be represented by a system of... more

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Linear Algebra

11/03/19

i have an input output matrix problem I don't know how to complete for homework.

My homework is asking "Suppose the following matrix represents the input-output matrix of a simplified economy that involves just three commodity categories: Manufacturing, Agriculture, and... more

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Linear Algebra Algebra 1 Algebra 2 Calculus

11/03/19

Standard deviation/probability

Peter and Sally each shoot 12 arrows at a target that is circular with a diameter of 72 inches. the mean of the distances that Peter's arrows strike from the center of the target is 20 inches, and... more

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Linear Algebra Algebra

11/03/19

The measure of one of the two complementary angles is 15° more than twice the other angle. Find the measures of both angles

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Linear Algebra Math Linear Equations College Math

11/01/19

Please Help: Linear Algebra Question (linear transformations)

If T is a linear transformation such thatT([3, 2])=[21, 5, -2] and T([4, -1])=[28, -8, 1]Then the matrix A that induces T is:*I'm confused on how to even approach this problem*Thank you

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Linear Algebra

10/31/19

Solving a word problem

A total of 756 tickets were sold for the school play. They were either adult tickets or student tickets. There were 56 more student tickets sold more than adult tickets. How many adults tickets... more

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Linear Algebra Vectors

10/31/19

HELP! Vectors - collision

Two boats, A and B, are moving in straight lines and the position of each particle after t seconds is given by the following equations: 𝒓𝐴 = 2𝑡𝒊 + (30 − 𝑡)𝒋 𝒓𝐵 = 2𝑡𝒊 + 60𝒋 − 4𝑡𝒋 (a) Find the... more

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Linear Algebra Vectors

10/31/19

Help me! Math Vectors! A helicopter wishes to fly directly East at 100 km/h.

A helicopter wishes to fly directly East at 100 km/h. If a constant wind blows directly from the North-East at 40 km/h, find the direction and velocity of the wind speed that must be maintained in... more

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Linear Algebra Math Algebra 1 Algebra

10/30/19

looking to compare my answers

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Linear Algebra

10/30/19

Find the coordinate vector of x=[-4,1,-2] with respect to the basis B=([1,7,7], [0,1,-6], [001]) for R^3

Find the coordinate vector of x=[-4,1,-2] with respect to the basis B=([1,7,7], [0,1,-6], [001]) for R^3 XB=[?,?,?]

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Help with linear algebra

algebra 1 problem solving

Linear Algebra Question

How to solve: A movie theater has a seating capacity of 355. The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults.

cost for each pound of jelly beans. cost for each pound of almonds

Linear Algebra Question

Linear equation word problem

Find all values of a that make det(A)=0.

Find the area of the parallelogram with vertices at (3,−4), (6,5), (−9,−15), and (−6,−6).

i need equation answers

Linear approx questions

Prove that if w⃗ is orthogonal to each of the vectors in the set S = {⃗v1, ⃗v2, . . . , ⃗vm}, then w⃗ is also orthogonal to each of the vectors in the subspace W = SpanS of V .

If the vectors ⃗u =(1 2) and ⃗v =(2 −4) are orthogonal with respect to the weighted inner product ⟨⃗u, ⃗v⟩ = w1u1v1 + w2u2v2, what must be true about the weights w1, w2?

Help me with my math problem

Matrix solve for b

Graphing systems of linear equations

i have an input output matrix problem I don't know how to complete for homework.

Standard deviation/probability

The measure of one of the two complementary angles is 15° more than twice the other angle. Find the measures of both angles

Please Help: Linear Algebra Question (linear transformations)

Solving a word problem

HELP! Vectors - collision

Help me! Math Vectors! A helicopter wishes to fly directly East at 100 km/h.

looking to compare my answers

Find the coordinate vector of x=[-4,1,-2] with respect to the basis B=([1,7,7], [0,1,-6], [001]) for R^3

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