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Solve the equation: 2x - 3 = 1/2

First, the denominator of the fraction is 2, so all the terms on both sides of the = have to be multiplied by 2: 4x - 6 = 1 Then you can simplify this by adding 6 to both sides: 4x = 7 And then divide both s...
FR
Answered by Fae R. • Maths tutor
9526 Views

Expand this bracket: 2(3a + 5)

2(3a + 5) : First you have to multiply everything inside the bracket by the number outside the bracket: = 2 x 3a + 2 x 5 or = (2 x 3a) + (2 x 5) This can then be simplified to give the answer: (2 x 3a) = 6a ...
FR
Answered by Fae R. • Maths tutor
11877 Views

How to find an original price from a reduced percentage.

Take the example: 'The price of a TV is reduced to 69% and is now £379.50. Find the original price. (This means find the price when it was at 100%.) Let's start by calling each percentage a 'part'. The new p...
PE
Answered by Phoebe E. • Maths tutor
13337 Views

How do you find the gradient of a line at a certain point when f(x) is in the form of a fraction, where both the numerator and denominator are functions of x?

Take the example f(x)=(2x^2+1)/(3x+5) , where we're finding the gradient at x=0. First, you need to differentiate f(x) to get f'(x). Because f(x) is a fraction where both the numerator and denominator are fu...
PE
Answered by Phoebe E. • Maths tutor
6992 Views

How do you find the turning points of a graph and how do you if the point is a maximum or a minimum?

Firstly you have to find the turning points of the graph. This is done by differentiating the equation of the line. Once you have found this first derivative, equate the equation to zero. Now solve the equat...
HH
Answered by Harry H. • Maths tutor
27534 Views