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Solve 3(2x + 5) = 4 – x

The first thing to do in this problem is to expand the brackets. This means we times whatever is in the bracket by the number on the outside, in this instance the number is 3. We do not worry about the right...
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Answered by Brandon R. • Maths tutor
13604 Views

Show that 3/8 divided by 7/12 = 9/14

When dividing by a fraction, it is actually a multiplication. All you need to do is flip the second fraction over. This is known as the reciprocal. In this example the fraction we want to flip is 7/12. Flipp...
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Answered by Brandon R. • Maths tutor
13812 Views

This is a sequence: 2,4,7,11,16. Find the Nth term

1/2n 2 + 1/2n + 1 This is a hard one and maybe closer to a maths challenge question. It is easier to explain in person. First common difference is 1 then 2 then 3 and so on. The second common difference is 1...
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Answered by Zia F. • Maths tutor
25590 Views

Diamond and Graphite are both giant covalent structures. If they are both made of carbon why does diamond have a higher melting point?

Although both are giant covalent structures, they have different structures. Diamond makes a 3d structure with each carbon attached to 4 other carbons so the only bond to break when melting it is the very st...
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Answered by Zia F. • Chemistry tutor
29610 Views

The Polar Bear is the largest species of bear in the world. With regards to adaptation, suggest a reason for this.

The habitat of the Polar Bears is the arctic. This is a much colder climate than the other species of bear found in the wild. Therefore the Polar Bear has adapted to live in this colder climate. One adaptati...
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Answered by Zia F. • Biology tutor
6706 Views