Top answers

How do you to answer an exam essay question successfully?

The trick to writing an successful essay in the exam in the planning. Those first 5 minutes should be spend taking deep breaths and reading the questions carefully. It is a common mistake to see a topic you ...
MC
Answered by Maria C. • History tutor
7904 Views

Integrate the function : F'(x)=3x^2+4x-5

F'(x)=3x^2+4x-5 F(x)=(3/(2+1))(x^(2+1))+(4/(1+1)) (x^(1+1))-5(x^(0+1)) Answer: F(x)=x^3+2x^2-5x+c
IM
Answered by Ian Malique D. • Maths tutor
8544 Views

There are 5 white socks and 3 black socks in a draw. Steven takes out 2 at random. Work out the probability that Steven takes out 2 socks of the same colour.

P(WW) = 5/8 x 4/7 = 20/56 P(BB) = 3/8 x 2/7 = 6/56 P(same colour) = 20/56 + 6/56 = 26/56 = 13/28 (simplified)
TJ
Answered by Tom J. • Maths tutor
8942 Views

ABC is a right angled triangle. D is the point on AB such that AD = 3DB. AC = 2DB and angle A = 90 degrees. Show that sinC = k/√20 where k is an integer. Find the value of k

AB = 4DB AC = 2DB Find BC using Pythagoras: BC = √(4DB) 2 + (2DB) 2 BC = √20DB 2 = √20 DB sinC = opp/hyp = 4DB/√20DB = 4/√20 so k = 4
TJ
Answered by Tom J. • Maths tutor
16429 Views

How do I start my answer?

Before you start writing, make sure you know what you’re going to say. Take ten minutes to do a rough plan. Often the best place to start is the wording of the title – it will focus what you say on the quest...
LN
5422 Views