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415 Answered Questions for the topic linear algebra

i need equation answers

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

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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

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

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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Linear Algebra

11d

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

13d

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

14d

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

15d

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

16d

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

17d

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

17d

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

17d

looking to compare my answers

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Linear Algebra

17d

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

18d

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

23d

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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