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A 4 pint bottle of milk costs £1.18 A 6 pint bottle of milk costs £1.74 Which bottle of milk is the best value for money? You must show all your working.

To work out which bottle is best value for money you have to work out how much each bottle costs per pint. To do this divide the cost of each bottle by the number of pints it contains. e.g 1.18/4=0.295 1.74/...
AP
Answered by Amelia P. • Maths tutor
23349 Views

Make x the subject of 5(x-3) = y(4-3x)

First expand out the brackets: 5x-15 = 4y -3xy Then re-arrange to bring all the x terms to one side: 5x+3xy = 4y +15 Now factorise: x(5+3y) = 4y + 15 Now we have isolated the x term, we can divide both sides...
AI
Answered by Alisha I. • Maths tutor
19817 Views

How do I multiply and divide indices?

First you need to understand what an index (or power) is. It’s just a compact way of writing a number multiplied by itself a number of times. For example: 3 4 = 3x3x3x3 and a 2 = axa. If two indices have the...
SM
Answered by Sarah M. • Maths tutor
14245 Views

Solve the simultaneous equations: 6x + 2y = -3, 4x - 3y = 11

(1) 6x + 2y = -3 (2) 4x - 3y = 11 Multiply by 3 so that the coefficients of y are the same 3 x (1) 18x + 6y = -9 3 x (2) 8x - 6y = 22 Add these 2 together to eliminate y 26x = 13 Divide by 26 to get x x = 1/...
DH
Answered by David H. • Maths tutor
6663 Views

Find the difference between the areas of these 2 shapes to 2 decimal places. Rectangle (width 4cm length 2.5cm) Circle (diameter 2.4) use pi = 3.14

Rectangle: Area = width x length hence area = 4cm x 2.5cm area = 10cm 2 Circle: Area = pi x radius 2 Radius = 1/2 x diameter Radius = 1.2cm Area = 1.2 2 x 3.14 Area = 1.44 x 3.14 Area = 4.5216 Difference bet...
LH
Answered by Lyam H. • Maths tutor
9047 Views