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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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Linear Algebra Math Algebra Mathematics

10/30/19

An arithmetic sequence has a 10th term of 15 and 14th term of 35.

What is the value of the first term? Use the value of d in one of the sequence equations from a.What is the general sequence equation for this situation?

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Linear Algebra Algebra

10/25/19

Write an equation to model this situation

Movie tickets for children cost $9 and tickets for adults cost $12. On a certain day a theater makes $150 in ticket sales write an equation to model the situation be sure to identify what your... more

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Linear Algebra Linear Equations

10/24/19

Maximize profit

Maximize z=12x+15y subject to:10≤x≤208≤x≤17y≤20x+y≤20

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Linear Algebra Linear Equations

10/24/19

Minimize and maximize profit

Minimize and maximize p=5x+5y subject to the following constraints:2x+y≤10x+2y≤8x,y≤0

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Linear Algebra Math

10/23/19

Linear Algebra Question

Let X=[ -6 -9 ] 7 0 Give an example of two 2x2 matrices A and B, neither of which is the identity matrix, such that AB=X.

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Linear Algebra Math Algebra Linear Systems

10/16/19

Determining the type of triangle given 3 lines

Determine the type of triangle that is formed by the lines x+y=11, x-y=1 and x-3y=3. Justify your decision?

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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

An arithmetic sequence has a 10th term of 15 and 14th term of 35.

Write an equation to model this situation

Maximize profit

Minimize and maximize profit

Linear Algebra Question

Determining the type of triangle given 3 lines

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