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When does a verb in a compound tense require 'avoir' as an auxiliary, and when does it require 'être'?

Almost all verbs will use 'avoir' when forming a compound tense - the perfect tense for example. This can be seen in the following example - "j'ai visité" (I visited). Here, the 1st person, sing...

GC
Answered by George C. French tutor
2147 Views

What are the benefits of Reverse Polish Notation and what is it?

Reverse Polish Notation is a way of writing mathematical expressions where the operands (such as numbers) are written before operations (such as addition or multiplication). So 1 2 + would be the addition...

GS
Answered by George S. Computing tutor
4144 Views

5 tins of soup have a total weight of 1750 grams. 4 tins of soup and 3 packets of soup have a total weight of 1490 grams. Work out the total weight of 3 tins of soup and 2 packets of soup.

5 tins of soup have a total weight of 1750 grams.
--> from this, we can calculate the total weight of 1 tin of soup, with 1750÷5 = 350 grams
4 t...

ES
Answered by Eszter S. Maths tutor
4454 Views

You have 10g of Sodium Carbonate, how many moles do I have to 2dp?

Sodium Carbonate is Na2CO3The molecular formula mass is 2xNa + 1xC + 3xO 2x23 + 1x12 + 3x16 = 106 g/mol m = 10g Mr = 106 g/moln=m/Mrn = 10/106 = 0.09 mol

SB
Answered by Sophie B. Chemistry tutor
3694 Views

Describe the difference between TCP and UDP.

TCP (Transport Communication Protocol) allows for guaranteed communication between two machines. Connections are established with acknowledgements, and the receiver will also send acknowledgements when pa...

LW
Answered by Lewis W. Computing tutor
1538 Views

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