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How do I solve simultaneous equations?

Always follow the same three steps : equating – substracting – substituting but you can have different cases : 

Case 1: we only need to multi...

RZ
Answered by Roxane Z. Maths tutor
5120 Views

How do I know when to use the subjunctive in Spanish?

In Spanish there are four main ways in which the subjunctive is used.

1. Formation of the negative imperative and the formal positive imperative

CM
Answered by Cathy M. Spanish tutor
3344 Views

Can you help me understand adjective agreements please?

Adjective AgreementsThe following are simple points to remember in order to avoid losing marks in an exam for forgetting to make adjectives agree. It is important ...

CE
Answered by Carolyn E. French tutor
4634 Views

What is the Preceding Direct Object (PDO) rule?

In French when we use a sentence in the Passé Composé that contains a direct object or direct object pronoun BEFORE the past participle...

HB
Answered by Holly B. French tutor
46311 Views

Why are GORE-TEX type materials are waterproof and yet breathable?

The material is made up from nylon laminated with a PTFE / polyurethane membrane. The membrane is too fragile on its own hence why it is com...

LB
Answered by Lily B. Chemistry tutor
4472 Views

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