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Kelly is trying to work out the two values of w for which 3w-w^3=2. Her values are 1 and -1. Are her values correct?

Sub in her values to see if the LHS and the RHS of the equation equate: w=1: 3(1)-(1)^3=2 >>> 3-1=2 >>> 2=2 ✅ Therefore 1 is a correct value. w=-1: 3(-1)-(-1)^3=2 >>> -3+1=2 >&g...
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Answered by Emma B. • Maths tutor
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At a school number of boys : number of girls = 9 : 7 There are 116 more boys than girls. Work out the total number of students at the school.

B:G --> 9:7 Expressed as fractions of the whole group, boys are 9/16 of the group and girls are 7/16 of the group. We can use algebra to work out the total group number. For our working, I will use x to r...
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Answered by Dionne M. • Maths tutor
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Opposition to anything that oppresses the human spirit is the element that dominates Blake's Innocence vs. Experience. How far do you agree with this statement?

It is important to have a clear structure in English essays. Blake's book of poems is divided into two parts; Innocence and Experience. This divide can be used as the structure for this essay (there are of c...
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Describe why diffusion is important in plants and animals

Diffusion is the movement of gases across a partially permeable membrane from a high concentration to a low concentration and is important to allow the movement of substances across cell membranes. For examp...
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Answered by Lucy D. • Biology tutor
37374 Views

White paint costs £2.80 per litre. Blue paint costs £3.50 per litre. White paint and blue paint are mixed in the ratio 3 : 2. Work out the cost of 18 litres of the mixture.

The ratio given tells us that our paint mixture of 18 litres consists of 3 + 2 = 5 parts . Each part therefore consists of 18/5 = 3.6 litres of paint . If we need 3 parts white paint, thats: 3 (parts) x 2.80...
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Answered by Vicente O. • Maths tutor
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