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A is the point with coordinates (5, 9) B is the point with coordinates (d, 15) The gradient of the line AB is 3 Work out the value of d.

A straight line equation is defined as y=mx+c where m is the gradient and c is the intercept. Since the gradient is already said to be 3 we can substitute this in to mean the equation for AB is y=3x+c. Si...

Answered by Tarun A. • Maths tutor

9939 Views

How do I remember and use the VANDERTRAMP verbs

Firstly we need to learn how to remember them - I have a song which works for me. Secondly, after writing them out we will look at how they use the verb etre (not avoir) and then the past participle.

Answered by Eloise D. • French tutor

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Explain the difference between active transport and osmosis (3)

i. Osmosis involves the transport of water only whereas Active Transport involves the transport of molecules/ionsii. Osmosis involves the transport along the concentration gradient whereas Active transpor...

Answered by Vera O. • Biology tutor

2390 Views

Block 1 is 24mm long. Block 2 is 32mm long. Vignesh joins some type 1 blocks together to make a straight row. He then joins some type 2 blocks together to make a straight row of the same length. (a) Write down the shortest possible length of this row.

96mm (a) Express 24 and 32 as prime numbers (explained in interview)(b) Use this to find the LCM (lowest common multiple) (c) Don't forget units!

Answered by Vera O. • Maths tutor

2585 Views

What happens to the reactivity of Group 1 elements going down the group and describe why that trend occurs?

The reactivity of Group 1 elements increases down the groupAs the atom becomes larger so the attraction between the positive nucleus and negative electron becomes weaker. Shielding also increases meaning ...

Answered by Euan M. • Chemistry tutor

2685 Views