1,954 Answered Questions for the topic linear algebra

Linear Algebra Algebra 1 Algebra 2 Prealgebra

07/12/20

Inverse Functions in Algebra
Hey, would anyone help me with this inverse function exercise? I have no idea what to do. Suppose  is a function from the set of real numbers to the same set with . We write  to represent  and . Is... more
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Linear Algebra Math Algebra Linear Equations

07/10/20

PLS HELP :)) i am not sure how to solve this problem
The cost of making 11 tables is $1,140. The cost of making 25 tables is $1,560. Assume this is a linear relationship.What is the cost per table? Write a linear equation that tells you the total... more
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Linear Algebra

07/10/20

What is the meaning of subspace and how are they used in linear algebra?
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Linear Algebra Math Algebra 1 Algebra 2

07/09/20

Any composition and inversion expert out there?
I need help to finish the following exercise (I was able to finish 2 by myself but not the other ones. A step by step explanation would be highly appreciated!):1. What can be said about the domain... more
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Linear Algebra Algebra 1

07/09/20

Solve application problems using linear systems.
Last year, Singer A performed four more than three times as many shows during concert tours than Singer B. The number of Singer A concert tour shows exceeded the number of shows by Singer B by 38.... more
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Linear Algebra Algebra 1

07/09/20

Solve application problems using linear equations.
A rectangular room is 1.7 times as long as it is wide, and its perimeter is 28 meters. Find the dimensions of the room.
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Linear Algebra Algebra 1

07/09/20

Solve application problems using linear equations.
Suppose that you are taking a course that has 4 tests. The first three tests are for 100 points each and the fourth test is for 200 points. To get a B in the course, you must have an average of at... more
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Linear Algebra Algebra 1

07/09/20

Solve application problems using linear equations.
Randall is 8 years older than Ashley. In 3 years the sum of their ages will be 78. How old is Randall now?
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Linear Algebra Algebra 2 Algebra

07/08/20

How to solve this question for college algebra.
The cost C of producing x thousand calculators is given by the equation below. C = -1 4.4x^2 + 14,390x + 580,000 (x <150) The average cost per calculator is the total cost C divided by the... more
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Linear Algebra Algebra Equations

07/07/20

I don't understand
A bank loaned out $18,500, part of it at the rate of 9% annual interest, and the rest at 6% annual interest. The total interest earned for both loans was $1,335.00. How much was loaned at each... more
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Linear Algebra

07/05/20

The sum of two numbers is 36. If the second number is four more than three times the first, find the numbers
The sum of two numbers is 36. If the second number is four more than three timesthe first, find the numbers
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Linear Algebra Algebra 1

06/27/20

Solve application problems using linear systems.
A gift basket maker incurs the cost for a basket according to C = 10x + 713. If the revenue for the baskets is R = 33x where x is the number of baskets made and sold. Break even occurs when costs =... more
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Linear Algebra Algebra 1 Algebra 2

06/27/20

Solve application problems using single variable linear inequalities.
A local salesman receives a base salary of $950 monthly. He also receives a commission of 6% on all sales over $1700. How much would he have to sell in a month if he needed to have a monthly income... more
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Linear Algebra Algebra 1 Algebra 2

06/27/20

Solve application problems using single variable linear inequalities.
If a certain city had a record low for the year of -25 degrees Celsius, and a record high of 53 degrees Celsius, find the temperatures in degrees Fahrenheit.C = 5(F - 32) / 9
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Linear Algebra Algebra 1 Algebra 2

06/27/20

Compound inequalities
6 ≤ -4x + 6 < 14Solve. Give your answer in interval notation.
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Linear Algebra Algebra 1 Algebra 2

06/27/20

Compound inequalities
The inequality 2x + 3 ≤ x + 10 ≤ 3x + 3 means that x is in the closed interval [A, B] where A is and B is:
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Linear Algebra Algebra 1 Algebra 2

06/27/20

Solve application problems using single variable linear equations.
Landon is 6 years older than Alexandra. In 8 years the sum of their ages will be 56. How old is Landon now?
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Linear Algebra

06/20/20

linear modeling
the population of spring city was 15,000 in 1990, and 7250 in 2000. Create a linear equation to represent this situation. According to your equation, what will the population be in the year 2006?
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Linear Algebra Algebra 1 Algebra 2 Algebra

06/18/20

Up down graphing
Starting with the graph of 𝑦 = √\root(3)(x), give theresulting equation with the same shape thatwould shift it 3 to the right then down 2.Show your work
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Linear Algebra

06/17/20

A class is made up of boys 8 and 4 girls. Half of the girls wear glasses. A student is selected at random from the class. What is the probability that the student is a girl with glasses?
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Linear Algebra Linear Equations

06/16/20

Application of linear inequalities

For his mobile phone service, John pays a monthly fee of $40 plus $15 for each 1 GB of data (rounded up) over his 8 GB of data that comes with his plan. For his monthly charge before taxes to be at... more
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Linear Algebra Math

06/07/20

T: IR2 -> IR2, T(ax² + bx + c) = 4c + (2c - 3b)x + (2x + b + c)x² . What are the eigenvalues and eigenvectors of T?
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Linear Algebra

05/27/20

True Or False???
a) If four vectors span R 4 ; then they must form a basis of R 4 ...... b) Four vectors in R 3 must be linearly independent...... c) Two nonzero vectors are linearly independent if one is not... more
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Linear Algebra

05/26/20

Linear algebra odd question
Can you settle four pencils such that they are perpendicular to each other? (Explain your answer by using the linear algebra
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Linear Algebra Math

05/26/20

V=R² is a vector space and T is a linear operator. T=(2x-y, x+y). f(x)=2+3x and g(x)=x+x² . a) find f(T) and g(T) linear operators. b) Are these operators singular?

c) Find dimensions of ker f(T), ker g(T), rank f(T), rank g(T)
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