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Expand the expression (3x+2)(3-2x)

9x - 6x²+ 6 - 4x-6x²+ 5x + 6

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What are the four bases found in DNA and how do they bond.

There are four DNA bases, Adenine (A), Cytosine (C), Guanine (G) and Thymine (T).
On each strand of DNA, the DNA bases are connected by phosphodiester bonds, to form a long chain.
These long D...

Answered by Toby J. • Biology tutor

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Describe dynamic equilibrium with reference to a process you have been learning in class.

Dynamic equilibrium is when the forward and reverse reactions happen at the same time and rate so there is no overall net change. A reaction that can be used as an example is the Haber Process:

Answered by Hasham S. • Chemistry tutor

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Describe and explain the ways in which a coastline can be eroded?

The 4 main ways in which a coastline can be eroded are: Attrition, Abrasion, Hydraulic action and solution.
To begin with, attrition is the collisions of the rocks in the sea which causes them to bec...

Answered by Hasham S. • Geography tutor

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The function f(x) is defined by f(x) = 1 + 2 sin (3x), − π/ 6 ≤ x ≤ π/ 6 . You are given that this function has an inverse, f^ −1 (x). Find f^ −1 (x) and its domain

To find inverse functions we swap the variables of the function we are taking the inverse of. let y=1+2sin(3x)so now, x=1+2sin(3y)Aiming to make y the subject, x-1= 2sin(3y)Therefore, (x-1)/2=sin(3y), ...

Answered by Harry C. • Maths tutor

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