Top answers

Solve simultaneous equations: 3x + y = 12 and 5x + 5y = 30

Make y the subject of equation 1 by subtracting 3x from both sidesy = 12 - 3x Substitute 12 - 3x for y in equation 25x + 5(12 - 3x) = 305x + 5 12 - 5 3x = 305x + 60 -15x = 3060 - 10x = 30 # add 5x and -15x S...
TD
Answered by Tutor162883 D. • Maths tutor
4180 Views

State the cell theory and briefly describe 3 exceptions.

The cell theory states that:All living organisms are composed of cells (unicellular or multicellular)The cell is the smallest unit of lifeAll cells come from the division of pre-existing cellsExceptions:Skel...
KP
Answered by KYRIAKI P. • Biology tutor
7025 Views

In the Great Gatsby what role does the setting play?

Fitzgerald uses setting to embody his opinion of the 1920’s American society. The macro setting of West Egg , represents the nouveau-riche contrastingly the East Egg symbolises established wealth . Both sett...
MC
6883 Views

Can a utilitarian be committed to promoting more than one objective?

Utilitarianism, as you remember, is the view, which says that the right thing to do maximises the overall amount of good. At first glance, there is nothing that would prevent a utilitarian from promoting mor...
KK
1570 Views

Find the solutions of the equation: sin(x - 15degrees) = 0.5 between 0<= x <= 180

Consider a sin graph and all the points on the graph which are equal to 0.5. You'll find that, between one period of a positive sin graph, invsin(0.5) may equal 30 degrees or 150 degrees. The equation can no...
MT
Answered by Mahir T. • Maths tutor
4813 Views