2,563 Answered Questions for the topic Maths

12/30/20

Basic Arithmetic Help, Price calculation.
You can buy 5 more extra books with $ 75, due to a reduction of price by 20%. What is the original and current price of one book?
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12/27/20

How do you calculate percentage mean?
I was reading some papers and these papers used a mean percentage to describe some data. I have some data of my own which I want to find a mean percentage of, but I cannot work out how to and I... more
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12/25/20

Kernel & Image of a Linear Transformation
Let (M2×2(R),+, ·/R) be the matrix vector space. Let T : M2×2(R) --> M2×2(R) , be the mapping defined by,T(A)= AT − A for all A belongs to M2×2(R).(i) Show that T is linear.(ii) Determine... more
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12/24/20

Please Help me with this Linear Algebra Maths questions
Q.1 Determine the scalars c for which A − c x Identity Matrix [2x2] is not invertible,where A = [ 4 6 −1 −3 ]Q7. Let S be the parallelogram determined by the vectors b1 = [ 2 and... more
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12/23/20

Linear Transformation ( T : R2 --> R4)
Let T : R2 --> R4 be a linear transformation such that,T[ 1 1]^T = [ -1 1 2 3]^T , T[-1 1]^T = [2 0 2 3]^TFind T[5 3]^T
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12/22/20

Create in standard form the equation of the cubic defined. Roots: -2 with multiplicity two, and 4 with multiplicity one. Point: (-3, -7)
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12/21/20

HELP FAST PLEASE I'LL MARK YOU BRAINLIEST What is the slope of a line perpendicular to the line whose equation is x+2y=14. Fully reduce your answer.
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12/19/20

Math help, simple coordinate geometry.
There are two points A (x,7) and B (12,y). Given slope m = 3 (fixed). a. Find the value of y-x (y minus x).b. Find the length AB.
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12/18/20

gauss jordan method
Using Gauss-Jordan method to find the solution of the following system of equations,  y + z = 4, 3x + 6y - 3z = 3, -2x - 3y + 7z = 10,
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12/16/20

Which statement is true about the quadratic function f ( x ) = − 4 x 2 − 8 x + 4 ?
A)the range is less than or equal to 4B)The range is less than or equal to 8C)The domain is greater than or equal to 0D)The domain is greater than or equal to -1please explain how im even supposed... more
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12/16/20

The relationship between x and y can be described as “y is 1 more than twice x.” Which domain and range descriptions are true?
please answerA) Domain:all real numbers Range:all real numbersB) Domain: all real numbers greater than or equal to 0Range:alll real numbers greater than or equal to 0C) Domain: all readl numbers... more
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12/16/20

How many times does the function intersect the x axis?
A teacher writes the function f(x)=3x(x squared)−18x+27 on the board. How many times does the graph of the teacher’s function intersect the x-axis?
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12/16/20

Complicated Word Question TJ Prep

Two cylinders are partially filled with water, each to a depth of 24 feet. The smaller cylinder has a radius of 3 feet and the larger has a radius of 4 feet. Water is emptied from the larger... more
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Maths Geometry

12/14/20

Splitting a square into equal areas
I am looking to split a square into 4 equal areas, not necessarily needing to be the same shapes or sizes . I need to find a way to use the least length of lines ( which could be straight or curved... more
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12/13/20

Franklin took a test with 200 questions on it and answered 165 of them correctly. What percent of questions did Theodore get right?

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12/13/20

Hannah was working on her homework and completed 1/5 of a worksheet in 1/4 of an hour.

How much of the worksheet will she have completed in one hour? How much time will it take her to complete one worksheet?
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12/13/20

A sporting goods store unpacked 20 boxes of 340 tennis rackets. How many tennis rackets per box were there?
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12/13/20

Nina ran 5.5 miles in 50.6 minutes. How many miles per minutes did she run?

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12/13/20

Consider the following production function;

𝑄(𝐾, 𝐿) = 3𝐾2/3𝐿1/3 The firm uses 125.000 K and employs 625 L. a. What is the production level of this firm? b. 5 labors want to leave this firm. To maintain initial production level, how much... more
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12/12/20

How to solve such?
Hi. My daughter got this and we don't understand how to solve it.'Find the conditions for a and b that make {(a, b), (-a, b), (2a, b), (a², b)} a function.'I don't want the solution for exactly... more
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12/12/20

Linear Algebra : Spanning Sets
It is given that the vectors v1=[ 1 0]^T and v2 = [ 0 1]^T span the full two-dimensional space R^2(R - set of real numbers)Also it is given that the vectors v1=[1 0]^T , v2 = [0 1]^T and v3 = [4 ... more
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12/11/20

Which equation represents a line that is perpendicular to the line represented by 4x - 2y = 7 ?
1. 2x + y = 42. -4y + 2x = 33. -6y = 3x - 244. x + y = -1
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12/11/20

Which equation represents a line that is perpendicular to the line represented by 4x - 2y = 7 ?
1. 2x + y = 42. -4y + 2x = 33. -6y = 3x - 244. x + y = -1
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Maths

12/10/20

Ashley is making a scale model of a building. The model is 3.4 feet tall. The actual building is 41.48 feet tall. How many times smaller is the model than the actual building
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12/10/20

Could somebody please help, I don't even know where to start with this. Please explain your answers to me, it would help me a lot
Two masses (m1 = 2.0 kg, m2 = 4.0 kg) are each initially 2.0 m above the table, and the masslessfrictionless pulley is 6.0 m above the table.(a) What’s the acceleration of the mass 2?(b) What’s the... more
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