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Solve the simultaneous equations '2X+Y=7' and '3X-Y=8'

In order to solve this question we need to remove one variable, either X or Y. Let us remove X in this case. The coefficents of X are 2 and 3. Their lowest common multiplte is 6. We can therefore get both va...
AP
Answered by Arjan P. • Maths tutor
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What is ionic bonding?

Ionic bonding by definition is the electrostatic forces of attraction between oppositely charged ions. What this means is, when metal atoms lose an electron to become a positively charged ion (Na+) and non-m...
YM
Answered by Yasmin M. • Chemistry tutor
4817 Views

Explain plate tectonics theory

Plate tectonics is a set of theories that describes and explains the distribution of earthquakes, volcanos, fold mountains and continental drift. It states that the earth’s core consists of semi-molten magma...
SM
Answered by Saskia M. • Geography tutor
16901 Views

How is globalisation managed?

FDI: The UK is highly successful in attracting FDI, with the UK being the highest receiver of FDI in Europe and the second highest in the world (after the USA). The single largest donor of FDI is the USA, 27...
SM
Answered by Saskia M. • Geography tutor
4646 Views

What is the range of solutions for the inequality 2(3x+1) > 3-4x?

When it comes to answering questions about inequalities, it is important to remember the signs and what they represent. In this instance, we need to find a range of solutions where 2(3x+1) is greater than 3-...
SK
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