Newest linear algebra Questions | Wyzant Ask An Expert

Linear Algebra

03/14/19

Union of two vector subspaces not a subspace?

I'm having a difficult time understanding this statement. Can someone please explain with a concrete example?

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Linear Algebra

03/14/19

What are differences between affine space and vector space?

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Linear Algebra

03/14/19

Why do we care about dual spaces?

When I first took linear algebra, we never learned about dual spaces. Today in lecture we discussed them and I understand what they are, but I don't really understand why we want to study them... more

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Linear Algebra Complex Numbers

03/14/19

What is the "standard basis" for fields of complex numbers?

What is the "standard basis" for fields of complex numbers? For example, what is the standard basis for $\\Bbb C^2$ (two-tuples of the form: $(a + bi, c + di)$)? I know the standard for $\\Bbb... more

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Linear Algebra

03/14/19

Looking for an intuitive explanation why the row rank is equal to the column rank for a matrix?

I am looking for an intuitive explanation as to why/how row rank of a matrix = column rank. I've read the proof at http://en.wikipedia.org/wiki/Rank_of_a_linear_transformation and I understand the... more

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Linear Algebra Algebra 2 Algebra

03/04/19

please help me solve this problem below;

Consider the following system of linear equations: Find values of a, b, c such that the above system of linear equations has:(i) exactly solution; (ii) an infinite number of solution; (iii) no... more

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Linear Algebra Word Problem

03/01/19

3x3 Linear equation

At Edmonds Community College freshman need to take a 100 level Math and English plus optional Philosophy course.In any quarter the college needs to make available 6 less English sections than Math... more

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Linear Algebra

02/23/19

The rectangle is 3 times as long as its wide. The area is 56 metre than what is its length ??

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Linear Algebra

02/22/19

Linear equations

Supply : p= S(q)= 3/4qDemand: p= D(q)=60-1/5q1)Find the equlibrium quanity2)Find the equilibrium price

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Linear Algebra

02/18/19

Linear Application Problem, STUCK HELP ASAP!

Phone Charges The monthly cost C, in dollars, for calls from the United States to Germany on a certain phone plan is modeled by the function C(x) = 0.24x + 5, where x is the number of minutes used.... more

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Linear Algebra

02/18/19

Is (3, 0) a solution to the equation y = -3x?

help me understand this.please.

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Linear Algebra Algebra

02/16/19

Linear equation help

Hi, I'm struggling with this question. I've finished all the subsections besides subsection (d.) Is that section asking for the intersection point of the cost and profit axis? Can anyone post a... more

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Linear Algebra Math Computer Programming Linear Equations

02/14/19

hi! :) i need help on finding the constraints for this problem:

An automotive company produces cars and trucks. Each vehicle must go through an assembly and painting process. If the painting part only paints the truck, 40 trucks can be painted in one day; if... more

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Linear Algebra Geometry Algebra Proving

02/12/19

Prove: triangle ABC is congruent to triangle DCB of the given is "angle 1 is congruent to angle 2, line segment AB is parallel to line segment DC

A___________________________B | | | | | | | ... more

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Linear Algebra Math Calculus

02/10/19

Solve the linear equations by gauss elimation. Please help.

X1 + 2X2 + 3X3 = 82X1 + 4X2 + 9X3 = 84X1 + 3X2 + 2X3 = 2

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Linear Algebra Algebra Linear Equations

02/07/19

Algebra Problem Question help

Yvette is offered a new job working at Roots. She has a choice of earning $350 a week and a 5% commission on all sales or she can earn $500 a week with no commission. Determine the value of total... more

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Linear Algebra Linear Equations

01/31/19

A round trip ticket to France is $1,210 and the hotel is $62 per night. The round trip to Greece is $1,180 and the hotel is $63 per night. At what time would the destinations have the same cost

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Linear Algebra Math Algebra 1 Prealgebra

01/25/19

Joanna went school supply shopping.

The rest of the question:She spent $26.79 on notebooks and pencils. Notebooks cost $2.43 each and pencils cost $1.11 each. She bought a total of 17 notebooks and pencils. How many of each did she buy? more

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Linear Algebra

01/19/19

Help with my algebra

So I’m lost in a few steps here for this problem in particular its showing me how to do it in the book but I’m not sure where they’re getting the answer from. 17 - (4n-5) = 9n-3(n+7)

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Linear Algebra

01/15/19

ith two minutes left in a basketball game, your team is 12 points behind. What are two different numbers of 2-points and 3-points shots your team could score to earn at least 12 points?

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Linear Algebra

01/11/19

Triangles Widths & Lengths

The length of a rectangle is 3 inches less than 2 times the width. The perimeter is 24 inches. Find the length and the width?

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Linear Algebra

01/07/19

algebra math equation

3 times a number increased by 6 is 24

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Answers •3

Linear Algebra Algebra 1

01/06/19

Write the equation of a line that is parallel to the line 3x + y = 4 and goes through the point (-2,1)

I get the answer y= 3x -2 which is wrong. Can someone break down the solution to this? I'm following methods that are all over the internet but this particular equation is difficult to me.

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Linear Algebra

12/27/18

A number is thrice another and their sum is 68. What are the numbers

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Linear Algebra

12/15/18

Can you answer this please

if you go to a basketball game and have $40 to spend on popcorn and sodas for your friends.popcorn costs $4 and sodas cost $2-write and inequality that models this situation where x is number of... more

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Union of two vector subspaces not a subspace?

What are differences between affine space and vector space?

Why do we care about dual spaces?

What is the "standard basis" for fields of complex numbers?

Looking for an intuitive explanation why the row rank is equal to the column rank for a matrix?

please help me solve this problem below;

3x3 Linear equation

The rectangle is 3 times as long as its wide. The area is 56 metre than what is its length ??

Linear equations

Linear Application Problem, STUCK HELP ASAP!

Is (3, 0) a solution to the equation y = -3x?

Linear equation help

hi! :) i need help on finding the constraints for this problem:

Prove: triangle ABC is congruent to triangle DCB of the given is "angle 1 is congruent to angle 2, line segment AB is parallel to line segment DC

Solve the linear equations by gauss elimation. Please help.

Algebra Problem Question help

A round trip ticket to France is $1,210 and the hotel is $62 per night. The round trip to Greece is $1,180 and the hotel is $63 per night. At what time would the destinations have the same cost

Joanna went school supply shopping.

Help with my algebra

ith two minutes left in a basketball game, your team is 12 points behind. What are two different numbers of 2-points and 3-points shots your team could score to earn at least 12 points?

Triangles Widths & Lengths

algebra math equation

Write the equation of a line that is parallel to the line 3x + y = 4 and goes through the point (-2,1)

A number is thrice another and their sum is 68. What are the numbers

Can you answer this please

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