1,975 Answered Questions for the topic linear algebra

Linear Algebra Linear Equations

01/25/21

A town is organizing a Fourth of July Parade.
A town is organizing a Fourth of July parade. There will be two sizes of floats in the parade, the first is 30ft and the second is 15ft.. A space of 10 ft will be left after each float. A. Describe... more
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Linear Algebra Algebra 1 Algebra 2

01/22/21

please help me with this question :For what values (s) of h is y  in the plane generated by v1   and  v2 ?
Let   =  ,    , and = For what values (s) of h is  in the plane generated by   and   ?
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/20/21

Is this math statement true:
Is this math statement true:: If AB = 0, then A = 0 or B = 0 or both are equal to zero.    
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Linear Algebra

01/20/21

Linear Independence of Column and Row Vectors
Question : Let A be an n*n matrix.Prove the following :If column vectors of A are linearly independent, then the row vectors of A are linearly independent.Thank you!
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Linear Algebra

01/20/21

When a number is decreased by 10% of itself, the result it 135. What is the number?
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Linear Algebra

01/20/21

When a number is decreased by 10% of itself, the result it 135. What is the number?
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Linear Algebra Calculus

01/20/21

true/false matrices: which of the following are true
A. If 𝐴 is an 𝑛×𝑛 matrix and if the equation 𝐴𝑥=𝑏 does not have a solution for some 𝑛-vector 𝑏 in ℝ𝑛, then 𝐴 cannot have a pivot position in every row. B. The matrix 𝐴 is 𝑠𝑖𝑛𝑔𝑢𝑙𝑎𝑟 if the... more
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Linear Algebra

01/20/21

A^-1 element Qn,n
Hey, i am studying linear algebra 1 , i need a solution for this problem please , i don't know how to start:(Let A =[aij] € GLn (IR) with aij element Z. Show the following statements: 1.) A^-1... more
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Linear Algebra Math Algebra 1 Algebra 2

01/19/21

Rebecca has $4.15 in quarters and nickels. The number of quarters she has is one less than twice the number of nickels. How many quarters and how many nickels does she have?
Give 2 equations and the nickels and quarters
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Linear Algebra

01/19/21

Prove that N(A*k)⊆N(A*(k+1)) for A∈Rn×n and k∈N.
Prove that N(Ak)⊆N(Ak+1) for A∈Rnxn and k∈N.
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Linear Algebra Math Maths Mathematics

01/18/21

Linear Algebra : Equivalence Statements Involving Elementary Matrices
Prove : If an n*n matrix A can be expressed as a product of elementary matrices, Ax = b is consistent for every n*1 matrix b.My thoughts on the question :Since A can be expressed as a product of... more
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Linear Algebra Math

01/16/21

Linear Algebra Math
Let v1 = (1, -2, 3) and v2 = (-2, -2, 4). Which of the following vectors are in span{v1, v2}? (i) (3, 0, -1) (ii) (5, 2, -4) (iii) (8, 2, -5) (A) (ii) and (iii) only (B) (iii) only (C) (i) and... more
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Linear Algebra Linear Equations

01/15/21

You would like to see how many baseball and basketball games you can attend this summer.
Travel time for baseball games is 2 hours and basketball games is 1 hour. You would like to spend no more than 15 hours traveling to the games. In total, you would like to attend at least 8 games.... more
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/14/21

A gas station uses the formula p(x) = 0.46 + 0.9x, where...
A gas station uses the formula p(x) = 0.46 + 0.9x, where x represents the wholesale price of the gas, to figure out how much to charge per gallon. What was the wholesale price if they are charging... more
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/14/21

Please help with linear equation

Which is a linear equation for the population, P, of a town whose initial population is 23,400 and decreases by 200 people per year?a)   P = 23,400 + 200tb)   P = 23,400 – 200tc)    P = 200 +... more
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/14/21

Are there math statements true?

Are there math statements true? - Every line has two distinct vertical intercepts.- If a > b and c < 0, then ac < bc.- |4 – 6| < |2 – 1|
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/14/21

Help me solve this quadratic equation by factoring please
Help me solve this quadratic equation by factoring please:x^2 + 15x + 50 = 0forx= ?x= ?Thanks :)
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/14/21

Help me solve this quadratic equation by factoring please.

Help me solve this quadratic equation by factoring please:3x^2 + 4x = 0forx= ?x= ?Thanks :)
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/14/21

Help me solve the quadratic equation please
Help me solve the quadratic equation please;(4x-5)(3x-1) = 0forx= ?x= ?
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/14/21

Help me Solve the quadratic equation please
Help me Solve the quadratic equation please:6x (x -10)= 0forx= ?x= ?
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/13/21

Solve the system of equations. Please help me
Solve the system of equations:A) 4w + 5z = 34 z - 2w = 4 w = ? z = ?B) r + s = -4 s - 4r = 16 s = ? r = ?
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/13/21

Solve the system of equations. Please Help
Solve the system of equations:3w-z= 5w+2z= 11for w= ?z= ?
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/13/21

Help me Solve the system of equations
Help me Solve the system of equations:x = y-85x-y = 0forx = ?y= ?
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Linear Algebra Algebra 1 Algebra 2 Calculus

01/13/21

How many solutions the system has? Please help
How many solutions the system has?7x-6 = y7/y - 1/x = 12/xyA- One solution since the second equation can be written as a linear equation that has a different slope from the first equation.B-... more
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Linear Algebra Algebra 1 Algebra 2 Prealgebra

01/12/21

Are there values of x which satisfy the statement? How you can tell without finding, or attempting to find, the values.
Are there values of x which satisfy the statement? How you can tell without finding, or attempting to find, the values.| 13-x | -5 < 0 1- Yes, since there are numbers whose distance from 13 is... more
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