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Answer: 16 pens and 7 rubbers
This is a quadratic equation, which contains terms up to x2. All quadratic equations can be written in the form ax2 + bx + c = 0 where a, bAnswered by Jennifer W. • Maths tutor2845 Views
10(x+2) -(2x-9)=30; 10x+20-2x+9=30 paying attention to the sign change when solving the brackets; 8x+29=30; 8x=1 separating in order to find out x; x=1/8
When we factorise, we are trying to put a long expression into a couple of brackets to make it neater and easier to work with. It is the opposite to multiplying out brackets. To start off with, we will fa...
a) s=ut + 1/2 at2Firstly , take the ut to the left hand side of the equation in order to isolate the 1/2 at2.s-ut=1/2 at2 Then multiply both sides by 2 to leave just atAnswered by Freddy Y. • Maths tutor4151 Views
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