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f(x) = 5x − 12. (i) Calculate f(4). (ii) Find f( x + 1). Give your answer in the form ax + b .

i) (5 x 4) -12 = 8 ii) 5(x + 1) - 12 5x + 5 -12 5x - 7
SM
Answered by Santiago M. • Maths tutor
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What is the wavelength of a wave?

First I would draw a graph showing a wave to support my explanation for what the wavelength means. The wavelength of a wave is the distance, in metres, from one point of the wave to the same point on the nex...
KW
Answered by Kimberley W. • Physics tutor
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Differentiate y= 8x^2 +4x +5

dy/dx= (2 * 8)x (2-1) +4 = 16x + 4
JJ
Answered by Juevaneeta J. • Maths tutor
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How can genetically identical twins look different?

There are two key pieces of terminology that it is important to understand with this question; genotype and phenotype . All sexual organisms inherit a mix of genes from their parents. This mix - the genetic ...
JH
Answered by Josh H. • Biology tutor
9261 Views

Is normal expiration, at rest, a passive or active process in a healthy individual? And why?

Expiration is a passive process. It happens due to relaxation, not contraction, of the muscles of the chest. As well as the elastic recoil of the lungs. Both of these processes do not require energy and henc...
SJ
Answered by Samuel J. • Biology tutor
10827 Views