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What is 3+4*5

Using BODMAS:4*5 = 203+20 = 23

Answered by Zieger X. • Maths tutor

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Make F the subject from this equation: C = (F-32)*(5/9)

C = (F-32)*(5/9)(9/5)C = F-32F = (9/5)C + 32

Answered by Zieger X. • Maths tutor

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A bag has blue and red counters in a ration of 4:5. If there are 45 counters in the bag, how many red counters are there?

Blue:Red = 4:54+5 = 945/9=5As the ration is 4:5, this means that there are 5*5 = 25 red counters in a bag

Answered by Zieger X. • Maths tutor

2415 Views

Walk me through the separation of an insoluble solid from a liquid

We’d use filtration. The mixture is poured over filterpaper in a funnel. The solid(residue) is left behind and the filtrate is pure liquid with no solid.

Answered by Rocco P. • Chemistry tutor

1734 Views

Anton, Barbara and Clive are buying pens from the shop. Anton needs 4, Barbara needs 7, Clive needs 11. Pens only come in packs of 10. How many packs of pens do they need to buy between them?

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 ...

Answered by Adam K. • Maths tutor

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