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Rearrange the following to make 'm' the subject. 4(m - 2) = t(5m + 3)

The first step is to expand the brackets by multiplication. This can be done using the 'bird method'. This results in 4m – 8 = 5mt + 3tNow to collect all 'm' like terms of the equation on the LHS. This gives...
TC
Answered by Taliesin C. • Maths tutor
4863 Views

Tobacco Mosaic Virus (TMV) causes plants to produce less chlorophyll leading to discolouration of the leaves. Explain why plants infected with TMV have stunted growth.

Less chlorophyll in the leaves means that less photosynthesis can occur. The process of photosynthesis produces glucose, so less photosynthesis will mean that there is less glucose produced. This leads to th...
JW
Answered by Jared W. • Biology tutor
6641 Views

Find the value of x which satisfies the following equation 3x^2 +6x+3 = 0

Factorise the equation: (3x+3)(x+1) = 0. Anything multiplied by 0 is equal to 0 therefore (x+1)=0 and (3x+3) = 0. Solve for x: if x+1 =0 you need to subtract 1 from x to work out what x is (do the opposite o...
AS
Answered by Aiysha S. • Maths tutor
3774 Views

Ayo is 7 years older than Hugo. Mel is twice as old as Ayo. The sum of their three ages is 77 Find the ratio of Hugo's age to Ayo's age to Mel's age.

Hugo = x Ayo = x + 7 (as he is 7 years old than Hugo's age) Mel = 2 multiplied by (x +7) as she is twice as old as Ayo2) If their ages combined equals 77, you add up all the algebraic equations and set it eq...
JS
Answered by Jeenali S. • Maths tutor
6562 Views

Find dy/dx of y=x^2 + 2x+1

We differentiate each term individually with respect to x. the way we differentiate powers of x is: x^n goes to nx^(n-1). So x^2 would become 2x, 2x would be just 2 as x^0 is 1 and a constant would just disa...
VM
Answered by Vivek M. • Maths tutor
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