Top answers

What are the differences between simple covalent and giant covalent bonding?

In terms of the structure, simple covalent substances are made up of molecules. These molecules are bonded together by a shared pair of electrons, which forms the strong covalent bond. Between molecules, wea...
HH
Answered by Harry H. • Chemistry tutor
97830 Views

What is a synapse?

a junction between 2 neurones
IG
Answered by India G. • Biology tutor
3204 Views

Find x when 2x^2-4x-6=0

Factorise 2x 2 -4x-6=0 2(x 2 -2-3)=0 -> 2(x+1)(x-3)=0 split factors up 2=0 , (x+1)=0 and (x-3)=0 x+1=0 -> x = -1 x-3=0 -> x = 3
IG
Answered by India G. • Maths tutor
3519 Views

How do I know when to use sin, cos or tan?

Check that your triangle is a right-angled triangle. Remember, you can only use pythagoras theorem or SOHCAHTOA on right-angled triangles. Label the sides O, H and A: opposite (the angle), hypotenuse (longes...
CS
Answered by Camilla S. • Maths tutor
12445 Views

Why does the quadratic formula give solution to quadratic equation

Let the quadratic equation be of the form: ax 2 + bx + c = 0. Now by completing the square ( which can be done numeorous ways) get: a(x - b / 2a) 2 - a(b / 2a) 2 + c = 0. Then rearrange equation: a(x - b / 2...
TT
Answered by Tu T. • Maths tutor
3763 Views