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There's a school in India where only 60% of students have internet access. What is the probability of choosing eight students randomly, five of whom have internet access? (Info: Each student's internet access (or lack of it) is independent from all others

Imagine a bag of balls. Each ball represents a student, and those with A on them are students with internet access, while balls without an A are those without internet access. We know from the question, when...
JG
Answered by Josh G. • Maths tutor
3931 Views

How do I answer a 'Retrieve and Recall' question?

In a retrieve and recall question, you will need to first of all read the article you've been given, then you will need to find some key information that you think is important, and finally write around thes...
JS
Answered by James S. • English tutor
3895 Views

How do I remember which verbs take être in the perfect tense?

There are a selection of "verbs of movement" in French which use être as their auxiliary verb in the perfect tense instead of avoir. You can remember these using the mnemonic "MRS VAN DER TRAM...
MM
Answered by Mary M. • French tutor
6738 Views

Expand and simplify the expression (x+5)(x+8).

This question is about multiplying two brackets together. There are two parts to each bracket: x , +3 and x , +5 . The parts in the first bracket must each be multiplied by both parts in the second bracket. ...
JC
Answered by Jamie C. • Maths tutor
19156 Views

What does it mean to "complete the square"?

Completing the square is a useful method of rearranging a quadratic equation so the unknown ("x") only appears in it once. The theory of completing the square tells us that we can take a quadratic ...
CG
Answered by Caitlin G. • Maths tutor
4746 Views