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How do you solve simultaneous equations.

Step 1. Pick one of the equations and move all of the x values to one side of the equal and move all others to the other side e.g X = 2y + 3Step 2. Make sure the X value is not times by a number e.g 2...

Answered by Taylor M. • Maths tutor

2712 Views

Differentiate x^3+ x^2+2=y

This equals to dy/dx= 1/3 x²+1/3 x¹This is because we divide by the power and then minus one from the powerSo it becomes x^3-1/3 which can be simplified to 1/3 x²

Answered by Vera I. • Maths tutor

3132 Views

Calculate the diameter of a circle with area 80cm^2 to two significant figures.

First you need to remember the equation area of a circle = πr² with r being the radius. Therefore as we are given the area of the cicle we need to rearrange the equation to give us the radius. ...

Answered by Matthew S. • Maths tutor

3914 Views

Solve the following equation. 7x^2 = 13x +2

First gather all x terms on left hand side,7x²-13x-2=0.
Since 7 is a prime number we can begin factorisation,(7x+/-?)(x+/-?)=0.
We know there must be a +/-2 and +/-1 in place of the q...

Answered by Lewis S. • Maths tutor

3234 Views

The equation of line L1 is y=3x-5. The equation of line L2 is 2y-6x+5=0. Show that these two lines are parallel.

To answer this question, you should make use of the general equation of a straight line: y=mx+c.For two lines to be parallel, they must have the same gradient (i.e. the same coefficient of x- which in the...

Answered by Gurvinder J. • Maths tutor

5285 Views