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1,975 Answered Questions for the topic linear algebra

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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