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Complete a seguinte frase, utilizando o pretérito mais-que-perfeito composto: Quando começou a chover, eu já __________ (ir) com o cão à rua.

Quando começou a chover, eu já tinha ido com o cão à rua.This verb tense shows that the action described by the verb happened before another. In this case, I had already walked my dog when it sta...

Answered by Fatima C. • Portuguese tutor

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C and D are two events such that P(C) = 0.2, P(D) = 0.6 and P(C|D) = 0.3. Find P(D|C), P(C’ ∩ D’) & P(C’ ∩ D)

Here we use the formula for conditional probability:P(C|D)xP(D)=(𝑃(C∩D))= 0.3x0.6=0.18Note: 𝑃(C∩D)=𝑃(D∩C)=0.18Hence P(D|C)=𝑃(D∩C)/P(C) = 0.18/0.2 = 0.9P(C'∩D') = P(C'|D')xP(D')P(C'|D) = 0.7P(D')=0.4P(C')=...

Answered by Sunny V. • Maths tutor

10585 Views

Solve the simultaneous equations 3x + 2y = -7 and x=4y+21

Substitute in the second equation into the first to eliminate x from the first equation. Solve for y which should, when solved (shown below), equal -5. Sub -5 back into either equation in the place of y t...

Answered by Jamie G. • Maths tutor

3617 Views

Why do you think species have evolved to use ATP rather than GTP?

First of all, the difference between them is that ATP contains the base adenosine and GTP contains guanosine. One of the significant differences between these molecules is that guanosine contains an extra...

Answered by Ben W. • Oxbridge Preparation tutor

2387 Views

Why does iodine have a higher boiling point than chlorine?

Iodine is a larger molecule, with more electrons, than chlorine. Therefore Iodine has stronger intermolecular forces than chlorine, which require more energy to break. This results in Iodine having a high...

Answered by Ben W. • Chemistry tutor

34635 Views