1,977 Answered Questions for the topic linear algebra

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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Linear Algebra

02/04/20

whats the length and width?
The length of a rectangle is 77 ft longer than twice the width. If the perimeter is 9292 ​ft, find the length and width of the rectangle.
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Linear Algebra

01/31/20

Let u4 be a vector that is not a linear combination of {u1,u2,u3,}.
Select the best statement.A) span{u1, u2, u3} = span{u1, u2, u3, u4}B) There is no obvious relationship between span{u1, u2, u3} and span{u1, u2, u3, u4}C) span{u1, u2, u3} is a proper subset of... more
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01/30/20

Linear Transformation and Standard Matrix
Let T: R2-> R2 be the linear transformation with the property: T(1, 0) = (4, -1) and T(2, 1) = (6, 1)Find [T], the standard matrix of T
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01/30/20

True or False: Linear Transformation & Matrix
Determine which are true and which are false:A) If there is a path of lenght 2 between two specific vertices in an undirected graph, then there must be a path of lenght 3 between those two... more
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01/30/20

Standard Matrices of Linear Transformations
Find the standard matrix of the linear transformations T that act as follows:(a) T(x, y) = (-4x + 6y, -x - 5y)(b) T(x y,) = (-2x - y, 2x + 3y, -4x + y)
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Linear Algebra Linear Transformation

01/30/20

Linear Transformation Questions
Suppose that T : R2 -> R2 is a linear transformation satisfying T(e1) = (5, 4) and T(e2) = (3, -2). Compute the following:(a) T(2, 0)(b) T(1, 1)(c) T(2, -3)
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Linear Algebra

01/29/20

1.25(x-4)=5+25 solve show all work and check
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01/24/20

A radio broadcasts in a 29 mile radius. If you drive a straight line from a city 38 miles north of radio to city 35 miles east of radio, how much of the drive will you pick up a signal from radio?
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Linear Algebra

01/24/20

The ratio of the length to the width to the height of a rectangular prism is 2:1:3 and the sum of the lengths of all its edges is 360 cm. Calculate the height of this rectangular prism.
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Linear Algebra Matrix

01/24/20

Matrix Problem Questions
The following list describes the flight routes between the cities:H is connected to T, HX, and MN.T is connected H, SJ, HX, MN, and ML.ML is connected to T, SJ, HX, and MN.SJ is connected to T, and... more
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Linear Algebra Angles Radians Vectors

01/18/20

Vector Angles in Radians
Compute the angle in radians between each of the following vectors:a) v = (-2, -2) and w = (2, -2)b) v = (5, 0, 5) and w = (2, 2, 0)c) v = (3, 3, 3, 3) and w = (0, 0, -1, -1)
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Linear Algebra Rectangle Vectors

01/18/20

Vector Question
A rectangle R3 has three of its corners at the points (3,1,1), (2,3,4) and (1,1,2). What are the coordinates of its fourth corner?
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Linear Algebra Linear Equations

01/16/20

if 2w -1 =2 what is the value of w(expontent2) -1
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Linear Algebra Proof Vector

01/15/20

Vector Proof Question
Suppose v and w are vectors in Rn . Show that || v − w || ≥ || v || − || w ||
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Linear Algebra True Or False Vectors

01/15/20

Vectors: True or False Questions
Determine which of the following statements are true and which are false.(a) There exist vectors v, w ∈ R3 such that ||v|| = 3, ||w|| = 3, and ||v + w|| = 7.(b) There exist vectors v, w ∈ R2 such... more
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01/11/20

Is the relationship shown by the data linear? If so, model the data with an equation. The relationship is not linear.

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Linear Algebra

01/08/20

x y 0 3 3 9 6 15 10 23 Which of the following linear equations corresponds to the table above?
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Linear Algebra

01/08/20

What are two examples of different right triangles that could like on a line with a slope of 2/5 (two fifths)?
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Linear Algebra Vectors

01/08/20

Vectors: Solve the following equations for the vector x ∈ ℝ2
x ∈ ℝ2(a) −2x + (0, −1) = (−2, 1) (b) (−4, 0) − x = (1, −1) − 2x (c) 2(x + 2(x + 2x)) = 5(x + 5(x + 5x)
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Linear Algebra True Or False Vectors

01/08/20

Vectors: Determine which of the following statements are true and which are false.
(a) For vectors v, w, z ∈ ℝn , if v + w = v + z then w = z. (b) The vector (3, 2, 1) is a linear combination of the vectors (1, 1, 1) and (1, 1, 0). (c) For vectors v, w, z ∈ ℝn, if v · w = v · z,... more
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Linear Algebra Vectors Parallelogram

01/08/20

Vector Parallelogram Question
If a parallelogram has diagonals described by the vectors x = (5, 4) and y = (3, −2), what are the sides v and w of that parallelogram?
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Linear Algebra Linear Equations

01/08/20

Intersection of 5x+2y=43 and -6x+3y=-30

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Linear Algebra

01/03/20

Find the angle between vectors u = [3,0] and v= [-1,1].
I found the following solution: cos⁡θ=(u⋅v) /‖u‖‖v‖= (3⋅(-1) +0.1) / (√ (3^2+0^2) ⋅√((-1) ^2+1^2)) =-3/ (√9 √2). However, the correct solution is -1/√2. What did I wrong? How do they find this... more
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