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Factorise this formula completely 2kx + 6ky + 4kz

2kx + 6ky + 4kz =2k (x + 3y + 2z)
SK
Answered by Samah K. • Maths tutor
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Solve algebraically 6a + b = 16 & 5a - 2b = 19

6a + b = 16 Equation 1 5a - 2b = 19 Equation 2 Scale up one equation so both equations have same coeffient of one variable ie 2 times Equ 1 12a + 2b = 32 5a - 2b = 19 Add variables of each equation, hence el...
EM
Answered by Euan M. • Maths tutor
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If a 30N force is applied to a stationary object of mass 10kg, at what speed will the object accelerate?

By taking the formula F=m*a, and rearranging the make a the subject, we get a=F/m. Then by substituting in the values given we can work out that a=30/10=3. The units of acceleration are ms -2 so hence, the o...
CM
Answered by Chris M. • Physics tutor
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Find the solutions to the quadratic equation x^2-9x+20=0

By factorising the expression, (x-5)(x-4)=0. This means that either (x-5)=0 or (x-4)=0. By solving these equations we can work out the solutions to be x=4,5.
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Answered by Chris M. • Maths tutor
3943 Views

Draw the chemical structures of butane, butene and butyne.

I would then go through with the student and explain that an alkane is a hydrocarbon made up of single carbon-carbon bonds only. This is why butane ends in -ane, it begins with but- due to the number of carb...
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Answered by Gavin I. • Chemistry tutor
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