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2,563 Answered Questions for the topic Maths

12/08/20

Who makes the most environmentally friendly choice?

Three friends, Alicia, Ben and Chris, want to travel from Toulouse to London. Alicia decides to ride her motorcycle from Toulouse city hall to Matabiau railway station, then she will go to Paris by... more

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Maths Math Elementary (k 6th) Elementary Math

12/08/20

An ant crawls 10 cm in 4 seconds. How far can the ant crawl in 5 seconds?

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Maths Math Elementary Math Mathematics

12/08/20

Arjun can answer 30 math facts in 60 seconds. How many math facts can Arjun solve in 8 seconds?

I am 7 but mum force me to go 6th grade but have learn problem

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Maths Math Elementary Math

12/07/20

Maths question I've been stressing over-

Choosing from the numbers: {1, 2, 5, 6, 7, 9}find which number each letter stands for: LAY+ GAY---------- EGGS

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Maths Excel

12/07/20

help with working out sell price after taking into account all variables

need a formular creating which will calculate the sell price after taking into account the following variables. We wont know the sale price, so the caluclation needs to automatically calculate this... more

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Maths Python Satistics Jupyternotebook

12/07/20

For every quantitative attribute, compute exactly what percentage of instances are within 1, 2 and 3 standard deviations of the mean. Don not use Chebychev’s Theorem of the Empirical Rule.

This answer has to be in python codes that is used in the jupyter notebook to execute and find the answer.example if the question is : Column : ‘Attribute’and Attribute = (... more

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Maths Math Calculus Mathematics

12/06/20

Riemann Integration

Define p : [0,2] --> R by (R=set of real numbers)p(x) = x if x<=1p(x) = 1 if x>1Prove that p(x) is Riemann integrable. (You may use without proof,integrate [f(x) dx] from 0-2 = integrate... more

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Maths

12/06/20

Multiplication of intergers

A positive integer squared plus 5 is 71. What is the integer

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Maths Math Trigonometry Mathematics

12/03/20

Trigonometric Identities

If ABC is a triangle,where cos(theta)=(a-b)/c is given (a,b,c are standard lengths of the triangle ABC & angle theta is a real value)(a)Show that... more

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Maths Math Algebra 2 Linear Algebra

12/01/20

Linear Algebra - Inner Product Spaces

The inner product on vector space of continuous functions on interval [a, b] is defined such that< f,g> := integrate[f(x)g(x) dx] from a to b Consider two functions x and x3. Which one is... more

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Maths Math Linear Algebra Algebra

11/30/20

Linear Independence of a Vector Space

Is the zero vector space v={0}, linearly independent. If so, why is that?

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Maths Math Statistics Mathematics

11/29/20

Least Square Approximation Method

According to the Cauchy's equation,mu = C + B/((lamda)2)where C and B are constant and mu and lambda are the wave length and reflective index respectively.Obtain the suitable least square... more

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Maths Math Algebra 1 Algebra 2

11/27/20

Complex Numbers and Basic Calculus

Suppose z = x + iy = r*(e^(-i*theta)) , where i=sqrt(=1) , r =|z| , tan(theta) = y/xAlso, suppose that w = -uz - m*ln(z) = A + Bi where i=sqrt(-1) and ln=log_eThen |dw/dz| = 0 implies, -(u + (m/z)... more

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Maths Math Algebra 2 Calculus

11/25/20

Differential Equations

How do we solve the following differential equation?dr/[ (m/(r^2)) + vcos(theta) ] = r*d(theta)/(-vsin(theta)

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Maths Math Algebra 2 Algebra

11/22/20

Linear Algebra - Basis

Show that S = [1 2 0 0] , [1 0 2 0] , [1 0 0 2] , [2 1 0 0] is a basis for V = M2*2(R) , R=set of real numbers

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Maths Math Calculus Mathematics

11/21/20

Convergence or Divergence of a Series

A certain ball has the property that each time it falls from height h onto a hard, level surface, it rebounds to a height rh, where 0<r<1. Suppose that the ball is dropped from an initial... more

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Maths Science Chemistry Equation

11/21/20

Help me work out density please!!

If you dissolve 52.5 g of salt in 3.45 l of water, what is the density of that solution of salty water? In this particular example, assume that the total volume doesn’t change when salt is added to... more

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