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All subjects
A Level

How do I know if a word needs a preposition and if so how can I tell which one to use?

As with English, prepositions aren't needed in every sentence, however many nouns, verbs and adjectives do require one. Remember: they will affect the rest of a sentence grammatically. However, we can tal...

RM
Answered by Rachael M. German tutor
1893 Views

How is blood pumped around the heart and to the body?

The pumping of the heart is split into two main phases, diastole (relaxation) and systole (contraction) and involves the four main chambers of the heart, the atria and ventricles, as well as the associate...

RJ
Answered by Rhiannon J. Biology tutor
2932 Views

Given y(x+y)=3 evaluate dy/dx when y=1

y(x+y)=3,yx +y2 =3,Differentiating with respect to x,y+x(dy/dx) +2y(dy/dx)=0when y=1, x=3-1=2 (from original equation)1+2(dy/dx) +2(dy/dx)=0,dy/dx=-1/4

LP
Answered by Leto P. Maths tutor
4728 Views

Explain the separation of powers found in the USA

The separation of powers is a system of shared power between three independent branches of government: the executive, judicial and legislative branches. Practically, the executive branch is run by the pre...

SO
2966 Views

Explain how gaseous exchange occurs in the lungs

Oxygen enters the nose/mouth along the trachea, bronchi, bronchioles and finally into the alveoli.The exchange of gases occurs between the alveoli and blood in the capillaries that supply the lungs. Capil...

TD
3470 Views

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