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A class of pupils were asked about how they travelled to school on a particular day. 1/6 of the pupils were driven to school in a car. 2/5 of the pupils took the bus. The rest of the pupils walked to school. Calculate the fraction of pupils who walk

The total amount of student would be represented by 1 or 100%. The pupils are split into three categories meaning the total must add up to 1. Therefore to find the remaining pupils who walked to school we si...
JZ
Answered by Jane Z. • Maths tutor
7020 Views

Write 120 as a product of its prime factor

What are Prime Numbers? Prime numbers by definition are numbers that cannot be divided by any other number but itself and 1. For e.g. 2 is a prime as it can only be divided by 2 and 1 and nothing else. One t...
KP
Answered by Kai P. • Maths tutor
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The perimeter of a right-angled triangle is 72 cm. The lengths of its sides are in the ratio 3 : 4 : 5 Work out the area of the triangle.

72 / (3+4+5) = 6base :3 6 = 18height :4 6 = 24area = (base * height) /2area = (18*24)/2=216 cm ^2
IH
Answered by Ibrahim H. • Maths tutor
3489 Views

Solve x^2+6x+1=0 by completing the square

x 2 +6x+5=0 First of all half the x coefficient and write (x+6/2) 2 the take away the (6/2) 2 and add on the 5 (x+3) 2 -9+5=0 (x+3) 2 -4=0 Simplify the expression (x+3) 2 =4 Move 4 to the other side of the e...
BS
Answered by Ben S. • Maths tutor
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Expand 4e(e + 2)

4e^2 + 8e
Answered by • Maths tutor
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