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James wins the lottery and gets £200,000. He decides to spend 10% of his winnings and invest the rest. From the money he has invested, he receives interest of 3% per year. How much money does James have after 5 years (to the nearest pound)?

James starts with £200,000. He then spends 10% of his winnings: 200,000*(1-0.1)=180,000 The 1 represents 100%, which the amount of money James starts with. He then spends 10%, which is represented by the -0....
EH
Answered by Edward H. • Maths tutor
3623 Views

How do I know when to use the cosine or sine rule?

Both the cosine and sine rule are used to find either a missing side length or angle of a triangle that doesn't have a right angle. The cosine rule is used when you know the length of two sides and the angle...
MB
Answered by Molly B. • Maths tutor
10065 Views

Expand (x-3)(x+7)

FOIL Method: F - First x x = x 2 O - Outside x 7=7x I - Inside -3 x=-3x L - Last -3 7= -21 Add all the results up to get the answer: x 2 +7x-3x-21 = x 2 +4x-21
ML
Answered by Martin L. • Maths tutor
8431 Views

Find the value of x: 2x^2 - 3x - 4 = 1

2x^2 - 3x - 4 = 1 To solve, we should bring all the terms to one side, and equate the equation to 0. To do this, we should subtract 1 from each side. 2x^2 - 3x - 4 - 1 = 1 - 12x^2 - 3x - 5 = 0 Next, we shoul...
PS
Answered by Prithvie S. • Maths tutor
4485 Views

If Angela gets 50p change from a £2 coin, how much is 250g of butter? (full details below)

Angela wants to bake a cake. She needs:250g flour250g sugar3 eggs125g butterEach costs:1kg flour 90p1kg sugar £1.206 eggs £1.15250g butter xShow your working.(0.25 x 0.9) + (0.25 x 1.2) + (0.5 x 1.15) + 0.5x...
NM
Answered by Natalie M. • Maths tutor
3552 Views