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Show that the lines y-5x=2 and 6y-30x=36 are parallel

Rearrange both equations so that both are in the form y= something. Move the x terms to the right of both equations. y=5x+2 6y=30x+36 Factorise second equation so that common factor of 6 is shown...

Answered by Madeleine B. • Maths tutor

3232 Views

If 1/(x(a-x)) is equivalent to B(1/x + 1/(a-x)), Express 'B' in terms of 'a'

1/(x(a-x)) = B(1/x + 1/(a-x)) Note: the '≡' sign (defined equivalence) can be used in place of '=' but this is not necessary to achieve full marks.Step: multiply both sides by x(a-x)1 = (x(a-x))B(1/x + 1/...

Answered by Charles G. • Maths tutor

3695 Views

Expand: (x+3)(2x+4)

2x²+4x+6x+12=2x²+10x+12

Answered by Tristan K. • Maths tutor

2972 Views

The perimeter of an isosceles triangle is 16cm the lengths of the sides are (x+3)(this is the length of the opposite side as well) and (x+4). Determine the value of x .

Write out all the information you have into one single equation, you know that the perimeter is the sum of the lengths of the sides of the triangle so write out the information as follows. x+3 + x+3...

Answered by Eve A. • Maths tutor

5758 Views

Differentiate y = x sin(x)

The question is asking to differentiate which means find dy/dx. If we think about the differentiation rules we know about, we see that we should use the product rule as y is a product (multiplication) of ...

Answered by Nathan T. • Maths tutor

6503 Views