1,959 Answered Questions for the topic linear algebra

Linear Algebra Algebra 1

01/06/19

Write the equation of a line that is parallel to the line 3x + y = 4 and goes through the point (-2,1)
I get the answer y= 3x -2 which is wrong. Can someone break down the solution to this? I'm following methods that are all over the internet but this particular equation is difficult to me.
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Linear Algebra

12/27/18

A number is thrice another and their sum is 68. What are the numbers
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Linear Algebra

12/15/18

Can you answer this please

if you go to a basketball game and have $40 to spend on popcorn and sodas for your friends.popcorn costs $4 and sodas cost $2-write and inequality that models this situation where x is number of... more
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Linear Algebra Prealgebra

12/14/18

What is an equation of the line through ( O, -3) with a slope of 2/5
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Linear Algebra

12/05/18

I the perimeter of a rectangle is 261m and the length is (2x-6)cm and the width is (x+3)cm then what is the value of x

I the perimeter of a rectangle is 261m and the length is (2x-6)cm and the width is (x+3)cm then what is the value of x
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Linear Algebra Algebra 1

12/02/18

Write the point-slope form of the equation of the line described. Through: (-1,4), parallel to y=-5x+2
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Linear Algebra Algebra 1

12/02/18

Write the point-slope form of the equation of the line described. Through:(4,2) parallel to y=-3/4x-5
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Linear Algebra

11/26/18

I need help! Please help me.
What is the standard form of the line that passes through the points (3,5) and (-7,2)?
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Linear Algebra

11/17/18

how do you do this?
Consider the region in the xy-plane defined the following set of linear inequalities.x≥0, y≥0 x≤10x+y≥5, x+2y≤181) Find the vertices of the feasible region.2) What is the maximum and the minimum... more
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11/17/18

Estimate using Linearization
Estimate ln(1.07) using the linearization L(x) of f(x) = ln(1 + x) at a = 0 (Round to three decimal places)L(0.07) =Find the actual value of ln(1.07). (Round to three decimal places.)Calculate the... more
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Linear Algebra Calculus Linearization

11/17/18

Estimate using Linearization
Estimate sqrt 25.1 using linearization L(x) of f(x) = sqrt x at a = 25 (Round to three decimal places)L(25.1) = Then find the actual value of sqrt 25.1
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Linear Algebra Calculus Linearization

11/17/18

Find the Linearization
Find the linearization of y = tan−1(5x) at x = 2.L(x) =
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Linear Algebra Math Algebra Linear Equations

11/13/18

Solve the following problem by creating a linear equality.
A family wants to buy some special cookies and cupcakes for Thanksgiving, spending no more than $40. The cookies are sold at $1.50 each, and cupcakes for $2.00 each. What is the maximum number of... more
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Linear Algebra Distance Speed Time

11/11/18

linear equation distance travelled and fraction
a woman travelled 3/8 of her journey by rail and walked the last 50 km. How far did she travel?
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Linear Algebra Linear Equations Distance

11/11/18

Linear equation to calculate distance travelled
a woman travelled half of her journey by rail and walked the last 50 km. How far did she travel?
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Linear Algebra

11/01/18

Solving a value mixture problem using a system of linear equations
A family has two cars. The first car has a fuel efficiency of 15 miles per gallon of gas and the second has a fuel efficiency of 30 miles per gallon of gas. During one particular week, the two cars... more
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Linear Algebra Algebra 1 Calculus Prealgebra

10/31/18

Your final score x is 12 points less than your friend's final score. Write and solve an equation to find your final score.
write equation and solve equation
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Linear Algebra

10/21/18

Find a linear function​ f(x)= ? f(x) with slope - 8 such that ​f(- 9​)=5
Find a linear function​ f(x) with slope - 8 such that ​f(- 9​)=5F(x)=
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Linear Algebra

10/20/18

Algebra (how to solve )
Hello in need helpIn the following question I need to prove that there is no answer to the equation and what is the reason ?(a+81)*x=1I tried to solve thisa+81≠1a≠-81
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Linear Algebra

10/20/18

Algebra word problem translation
Translate this sentence about area into a mathematical equation.The area A of a regular pentagon is directly proportional to the square of the length s of its sides.
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Linear Algebra Differential Equations

10/19/18

3 Variable System of Equations When All Set to Zero
-5x+4y-2z=0x-2y+z=06x-6y+3z=0,solve for x,y, and z.
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Linear Algebra College Algebra

10/15/18

State the domain:

s(x)=sqrt(16−x2)/sqrt(x2−4) where sqrt=square root ()
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Linear Algebra College Algebra

10/15/18

Rewrite the equation in the standard form of a circle: (x-h)^2+(y-k)^2=r^2
The equation to rewrite is: 3x^2+3y^2+16x+14y-72=0
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Linear Algebra College Algebra

10/15/18

1. Given a circle with center (9, -2) and a point on the circle (10, -10). Note: You must support your answers algebraically.
a. Is there a value y such that the point (-8, y) lies on this circle? Algebraically show there is no point or algebraically prove the point exists and find the point. b. Is there a value x such... more
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Linear Algebra

10/14/18

I don’t get this (Parrallel and perpendicular lines)
y=2x-5 and y=2x+5 The question is asking me if the lines are parrallel, perpendicular or neitherhow do I know??
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