1,975 Answered Questions for the topic linear algebra

Linear Algebra

03/03/20

Linear Equations in 2 variables

Hi, this is the question that has me stumped the most. Solve for X and Y1/2x + 1/1 = 1y = 15/21x +1/9y = 67/9I believe the answer has no solution but I wanted to hear from you all.
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Linear Algebra

03/02/20

A=a+b+c/3 to solve for b in this formula, the first step is to

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03/01/20

please help me I need to pass
You have one type of nut that sells for $3.10/lb and another type of nut that sells for $5.70/lb. You would like to have 5.2 lbs of a nut mixture that sells for $4.00/lb. How much of each nut will... more
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02/28/20

Systems of Linear Equations Question
Find all the solutions to the following linear system:y/x + 2x/y = 6/xyx2 + y2 = 5
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02/28/20

Linear Systems Question
Let t ∈ R and consider the linear system described by the following augment matrix: A = [ 1 -1 | 0 ] [ 1 1 | 1 ] [ 0 1 | t ] For which values t does this system have:(i) no solutions(ii)... more
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Linear Algebra Linear Transformations

02/28/20

Linear Transformation Question
Suppose u = (2, 1, -1)/√6 and let Pu be the linear transformation that projects R3 onto the line through the origin in the direction of the unit vector u. Find all vectors v ∈ R3 with the property... more
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Linear Algebra

02/25/20

My question is about matrices.
Hello, i have a question. Suppose A is a 3*2 matrix, B is a p*q matrix and C is a 5*4 matrix. if ABC is defined then p and q is :1) p=2 and q=5 2) p=2 and q=43) p=3 and q=44) p=3 and q=5I... more
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Linear Algebra Algebra 2

02/25/20

simultaneous equations
Equation 1: 3x + y - 2z = -7Equation 2: -az = x + y + 6To form the third equation use the digits 2,2,1,9 will be the coefficients of x,y,z, and the constant term in that order, given that the... more
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Linear Algebra Algebra 2

02/24/20

Linear problem/question
BIll inherited $25,000 and invested part of it in a money market account, part in bonus bonds and part in a mutual fund. After one year, he received a total of $1,620 in simple interest from the... more
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02/24/20

True or False Linear Systems
Determine which of the following statements are true and which are false. (a) The equation 4x − sin(1)y + 2z = 3√5 is linear.(b) The equation xy + 4z = 4 is linear. (c) If a system of linear... more
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02/24/20

Systems of Linear Equations Questions
Find all solutions to the following systems of linear equations: (a) x + y = −5 2x − 4y = −4 (b) x + y − z = 1 x + 2y + 2z = 1 2x + y − 5z = 2
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02/24/20

Linear Systems Equation Solutions Questions
Determine how many solutions each of the following linear systems have:(a) 6x + 8y = 5 −2x + 9y = −6 (b) 5x + 2y + z = 4 −x + 8y + z = −2 (c) 2x − 3y = −1 3x + y = −4 x − 7y = 2 (d) x + 3y + 3z = 3... more
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Linear Algebra

02/24/20

Topic on Linear Algebra .
Which of the following statements is correct ? 1) The solution of 0x+0y = 0 is x= 0 and y= 0 2) (-1;2;4) is a solution of 2x+2y+2z = 10 and 2x-z = 2 please assist.
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Linear Algebra Math Algebra 1 Algebra 2

02/23/20

Need help solving "x*0.096+(1-x)*0.078=0.0888"
i'd like help with solving x please, thanks
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Linear Algebra Math Proofs

02/21/20

Abstract linear algebra

generalize the notions of external and internal direct sums to three or more summands.
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Linear Algebra

02/16/20

The sum of two positive integers is 39. When the smaller integer is subtracted from twice the larger, the result is 39. Find the two integers.
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Linear Algebra Linear Equations

02/12/20

Analyse the case below in regard with the linear programming technique
A good example of how to use operations research analysis is to consider the plight of farmer Jones. He must decide how many acres of corn and wheat to plant this year. One acre of corn... more
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Linear Algebra Linear Equations

02/12/20

How do i solve this question? what equation am i using
The demand curve for a product is p=60 - 0.0005q where p is the price per unit and q is the quantity demanded. How many units must be sold to achieve sales of 1200000?
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Linear Algebra Linear Equations Chance

02/12/20

Calculating damage output in a video game
I have a character in a video game with 2 different sets of items. A normal attack does 800 damage, a critical attack does 1,5 times that, so 1200. The character has a certain attack speed, and a... more
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Linear Algebra Linear Equations

02/11/20

solve for me pls
Two factory plants are making TV panels. Yesterday, Plant A produced 5000 fewer panels than Plant B did. Two percent of the panels from Plant A and 5%of the panels from Plant B were defective. How... more
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02/08/20

Family of lines equation, need help
I'm super confused with this question: a family of lines have equations of the form 3x+by=12, where b is a non-zero number.Find the equation of the line perpendicular to 3x+by=12 at the point... more
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Linear Algebra

02/08/20

Need Help With Linear Equations
I need help with this question: a family of lines have equations of the form y=-2x+c, where x is a positive number. Let O denote the origin, and let A and B be the x axis and y axis intercepts of... more
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Linear Algebra

02/05/20

Which equation represents a line parallel to the line given by y-3x=6
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Linear Algebra Math

02/05/20

Recall that two angles are complementary if the sum of their measures is​ 90°. Find the measures of two complementary angles if one angle is nine times the other angle.
Help me having trouble whats answer?
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Linear Algebra Math Sat Math

02/04/20

What are the length and width of a rectangular traffic sign if the length exceeds the width by 10 inches and the perimeter is 156 ​inches?
Kind of stuck dont know how to solve this?
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