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The total number of pens they need is 4 + 7 + 11 = 22However pens only come in packs of 10 so they have to round up the number of pens they need to the nearest 10 ... this is 30. Then 30 divided by 10 is ...

Find the highest common factor of each component. H.c.f. of 4 and 10 is 2, so:4x² + 10x = 2(2x² + 5x)H.c.f of x² and x is simply x, so:2( 2x² + 5x) = 2x(2x + 5...

Every individual of every species living on the planet has DNA, made up of sections called genes. Mutations to these genes occur over time, resulting in a change to an individual's behaviour or physiology...

All stem cells contain the same genes, but not all of these genes are expressed. Signalling causes certain genes to become activated within a stem cell. Only these activated genes are transcribed into mRN...

A factor is a number that can be multiplied into another number with nothing left over. The factors of 9 are 1, 3, 9.A common factor is a number that is a factor of two different numbers. The factors of ...