1,977 Answered Questions for the topic linear algebra

Linear Algebra Mathematics

01/24/22

How to calculate the given complex number?
| (π +i)^100(π − i)^100 |
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Linear Algebra

01/23/22

Put in a linear equation
Rachael needs a car to rent to get to and from school. Rental is 44.00 a day, .05 a mile, school is 10 miles each way. Rachael budget is $800.00 How many days could she rent the car?
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Linear Algebra Math Algebra Linear Equations

01/21/22

Linear Equation Word Problems
Cecilia rents a moving truck that uses a gallon of gas every 10 miles for $29.95 per day. She incurs an additional charge of $0.89 for each mile traveled and must return the truck with the same... more
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Linear Algebra Math Algebra Linear Equations

01/20/22

Linear Equation Word Problems
Alma and Erika work part-time stocking shelves at a grocery store. At 7:00 a.m on Saturday, Alma begins unpacking boxes at a rate of 1 box every 6 minutes. Erika joins her at 7:45 a.m unpacks 1 box... more
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Linear Algebra Math Algebra Linear Equations

01/19/22

Linear Equation Word Problem
Oliver mows lawns in his neighborhood. He charges $10 for each regular yard he mows, and he charges an extra $5 for each large yard that he mows. In one week he mowed 6 more large yards than... more
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Linear Algebra Math Algebra Linear Equations

01/19/22

Linear Equation Word Problems
A meteorologist estimates that on a sunny day, the air temperature decreases by about 4 degrees fahreheit every 1,000 (ft) of elevation gain. On a certain day, the air temperature outside an... more
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Linear Algebra Math Algebra Linear Equations

01/19/22

Linear Equation Word Problems
A meteorologist estimates that on a sunny day, the air temperature decreases by about 4 degrees fahreheit every 1,000 (ft) of elevation gain. On a certain day, the air temperature outside an... more
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01/18/22

general solution of high DE using reduction of order
find the general solution of the DE ..... y1 = x1/24x2y''+y=24x1/2ln(x)I reduced the DE to first linear by letting w = u'w' +1/x w = 6ln(x) / x2found u to be ln3(x)+ln(x)c1+c2my general solution... more
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Linear Algebra Algebra Homework

01/17/22

Linear Question
Sandra, who is paid time-and-a-half for hours worked in excess of 40 hours, had gross weekly wages of $667 for 52 hours worked. What is her regularly hourly rate?
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01/15/22

general solution of high DE "variation of parameters"
find the general solution of the non-homogeneous DE:x2y'' -3xy'+4y=x2, x>0I first solved the associated homogen. equation using cauchy euler method and found y1 and y2 to bey1=x2,... more
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01/15/22

GENEREAL SOLUTION OF HIGH DE "REDUCTION ORDER"
find the general solution of the DE given that y1 = exxy'' +(3-2x)y'+(x-3)y=0I want to make sure of my answer. my answer is:y=ex(-C1x-2/2 +C2)please let me know if my solution is correct
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01/15/22

GENEREAL SOLUTION OF HIGH DE "REDUCTION ORDER"
find the general solution of the DE given that y1 = exxy'' +(3-2x)y'+(x-3)y=0I want to make sure of my answer. my answer is:y=ex(-C1x-2/2 +C2)please let me know if my solution is correct
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Linear Algebra Math Linear Equations

01/02/22

linear algebra math questions

Find the complete solution to 𝐴𝑥 = 𝑏. Show all steps in detail.A= [2 4 64 , 2 5 76, 2 3 52] b=[b1 b2 b3 ]= [4 3 5]
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Linear Algebra Math Linear Equations

01/02/22

lineer algebra math question
Reduce A and B to their triangular echelon forms U. Which variables are free and pivot ?A=[1 2 24 6, 1 2 36 9, 0 0 12 3] B=[2 4 2, 0 4 4, 0 8 8]
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Linear Algebra Math Algebra 1 Algebra

12/29/21

Algebra Linear Question
The sum of three consecutive numbers is equal to the smallest number multiplied by 4
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Linear Algebra Math Algebra 2 Algebra

12/28/21

Linear Algebra question
Identify the property illustrated in: If x + 5 = 6, then 3x + 15 = 18?
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Linear Algebra

12/26/21

A square matrix A is said to be idempotent if A^2 = A.
Let A be an idempotent matrix.(a) Show that I − A is also idempotent.(b) Show that if A is invertible, then A = I.(c) Show that the only possible eigenvalues of A are 0 and 1. (Hint: Suppose x is... more
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Linear Algebra

12/22/21

please help me with this problem
line passes through (4,-2) and slope 5/4 write an equation in slope intercept form
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Linear Algebra Linear Equations

12/22/21

Find the whole answer of Ax = b, including all steps.
A = [2 4 642 5 762 3 52] b = [b1b2b3] = [435]
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Linear Algebra Math Maths Mathematics

12/21/21

Linear Algebra Question
Let V = P2 equipped with the inner product <f, g> = integral from -1 to 1 of t * f(t) *g(t) dtconsider the linear transformation T from V into R such that T(f) = f(0)Find a basis of the... more
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Linear Algebra Linear Equations

12/20/21

How to Graph a Line given 1 point and the slope!
Graph the line that contains the point (-4, -7) and has a slope of 2 (m = 2).
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Linear Algebra

12/16/21

Maximize f=7x+5y subject to the following constraints and and find the shadow price for Constraint 4 :
Constraint 1:  3x+4y<=24Constraint 2:  2x+y<=10Constraint 3:  x =>1Constraint 4:  y<=5x and y are non-negative 
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Linear Algebra

12/13/21

Linear Algebra - Finding values
Find all the values of the sixth root for the following: (-1-i)^1/6
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Linear Algebra

12/01/21

Write an equation in slope-intercept form for the line passing through the pair of points. (6, 4) (4, -5)
Write an equation in slope-intercept form for the line passing through the pair of points. (6, 4) (4, -5)
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Linear Algebra Math

11/29/21

6. Harry is buying a mix of almonds and peanuts. Almonds are $15/kg and peanuts are $5/kg. Harry spends $75 in total.

continuation from the previous question^^^6. a)Write an equation to model this situation. Define your variables. 6. b) If Harry only buys almonds, how many kg can he buy?
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