Top answers

Solve 3x+7=1.

3x+7 = 1. We can describe this equation as a stroy. First x was multiplied by 3 and then 7 was added to it to get 1. Now we need to reverse the story. last thing done was +7, so reversing it gives us -7. 1 -...
KW
Answered by Katarzyna W. • Maths tutor
26691 Views

What is the difference between a shift and a movement in the demand (or supply) curve?

A shift in the demand curve occurs when there is a non-price determinant of demand, including a change in consumers' income, changing trends and tastes, changes in the price of complementary and substitute g...
SD
Answered by Sofia D. • Economics tutor
18173 Views

Outline the "Sliding Filament Theory" of muscle contraction.

In the resting state, the myosin heads have a partially hydrolysed ATP molecule (ADP + Pi) giving them potential energy. When there is an influx of calcium ions as a result of sarcolemma depolarisation, the ...
SM
Answered by Sohail M. • Biology tutor
7454 Views

Factorise and solve x^2-8x+15=0

(x-5)(x-3)=0 x-5=0 x-3=0 x=5 x=3
PL
Answered by Peter L. • Maths tutor
3407 Views

Find dy/dx for y=x^2 * sin(x)

To answer this question we observe that y is the product of x^2 and sin(x), so we use the product rule. Then dy/dx = 2x * sin(x) + cos(x) * x^2 The resulting equation can be tidied up by factoring out x and ...
JH
Answered by Jake H. • Maths tutor
8856 Views