Top answers

Given the function f(x) = 2x^2 + 3.When f(x) = 53 find both values of x

Sub in f(x)=53 into equation. So you have 53=2x^2+3, deduct 3 from both sides to get 50=2x^2 and then divide each side by 2 to get 25=x^2 and finally square root both sides to get x=5 or x=-5.
JW
Answered by Jack W. • Maths tutor
6467 Views

Explain how the energy companies have exploited their market power.

Start by outlining the type of environment in which energy companies operate in the UK. 1. The market structure is an oligoly. Each firm has a certain amount of market power it is able to exploit. Collusion ...
SH
Answered by Samuel H. • Economics tutor
3950 Views

What is the tertiary structure of a protein?

The tertiary structure of a protein is the final folding of a protein into its final shape. It involves interactions between the R-groups of the amino-acids in the polypeptide chain. These interactions are m...
SS
Answered by Shiv S. • Biology tutor
7934 Views

Explain the potential impacts on the global economy of sustained trade imbalances (25 marks)

(1) Point: Less global trade Example: US had a trade deficit of $460bn in 2017 meaning more imports than exports, leads to protectionism (such as 35% tariff on Chinese tyres in 2010). Analysis: Reduces trade...
BG
Answered by Ben G. • Economics tutor
2553 Views

y=6x+9 , 3y-18x+9=0 Are these lines parallel?

3y-18x+9=0 , 3y=18x-9 , y=6x-3 , Both lines have the same value for m which means they both have the same gradient and are therefore parallel.
SL
Answered by Sean L. • Maths tutor
3879 Views