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Write √98+3√8-√200 in the form a√2, where a is an integer

Step 1: Put all the surds in to the form a√2. Starting with √98 try and work out what numbers multiply together with 2 to get 98 (2x49). Therefore √98=√(2x49). As 49 is a square number yo...

ER
Answered by Emma R. Maths tutor
5657 Views

Explain the concept of 'threshold potential' in the initiation of an action potential

Action potentials are only initiated when depolarization above a certain level occurs, this level is known as the 'threshold potential'. 'Vm' is the resting membrane potential (voltage) and the depolarizi...

TD
12440 Views

Explain the role of B-lymphocytes and T-lymphocytes in the defence of the body against a virus infection (6 Marks)

A virus is a pathogen which contains antigens on its cell surface. These antigens are detected and digested by macrophages. The two pathways involved in the detected and elimination of the virus is the ce...

SR
Answered by Sumaiya R. Biology tutor
6213 Views

Explain the key differences between plant and animal cells.

The structure of plant and animal cells is generally similar since they are both eukaryotic cells. They contain many of the same organelles including but not limited to the nucleus, mitochondria and the e...

LM
Answered by Lauren M. Biology tutor
10767 Views

(A) express 4^x in terms of y given that 2^x = y. (B) solve 8(4^x ) – 9(2^x ) + 1 = 0

(A) express 4x in terms of y given that 2x = y. we know that 22 = 4....

ST
Answered by Sadat T. Maths tutor
34450 Views

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