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work out the value of 4a + 2b when a = 4 and b = 3

To solve this question you want to do it step by step. Firstly replace the 'a' with '4' and calculate the first part of the sum. 4 multiplied by 4, which is 16. Next replace 'b' with '3' and calculate the se...
JF
Answered by Joseph F. • Maths tutor
33608 Views

How do I solve 3x + y = 11 & 2x + y = 8?

In order to solve this set of simultaneous equations, we will rearrange each equation to use substitution. The aim of this problem is to find out what the value of x and y is. Let's rearrange equation 1 and ...
NO
Answered by Naomi O. • Maths tutor
15030 Views

How can I factorise a quadratic equation?

A quadratic equation is an equation of the form y = a x 2 + b x + c where a, b and c are constants (for example 5, -2 or 0). To "solve" a quadratic equation we are finding the values of x that sati...
TR
Answered by Tom R. • Maths tutor
3845 Views

Describe the structure of DNA and where it is found inside a human cell

The DNA molecule is found within the nucleus of the cell, organised into chromosomes. In humans, there are 46 chromosomes. The DNA molecule consists of organic bases joined by sugars and phosphate molecules.
KT
Answered by Kelly T. • Biology tutor
8162 Views

Was Augustus' Foreign Policy after 27BC peaceful?

After the First so called Constitutional Settlement in 27BC where Augustus was given his name and attempted to return powers on account of his ill health, the Senate had ipso facto given Augustus even more p...
CB
10693 Views