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In a geometric progression, the first term is a and the common ratio is r. The sum of the first two terms is 12 and the third term is 16. determine the ratio ar^2/a+ar

in a geometric progression, the first term is a and the common ratio is r. the sum of the first two terms is 12 and the third term is 16. a) determine the ratio (ar^2)/a+ar( aready found the answer as 4/3) b) if the first term is larger than the second te...

root3/1-cos30 leave your answer in surd form

one hundred and sixty examiners, each marking 100 scripts per day, are needed to mark an examination in 4 weeks. how many days would 250 examiners, each marking 60 scripts in a day, take to mark the same examination?

cuboid is filled with water whose density is 1g/cam.calculate the mass of the cuboid when full of water

I need to be assisted with my question

=2 sqrt3/(2-sqrt3)*(2+sqrt3)/(2+sqrt3) is going to be equal to (4 sqrt3+6)/(4-3) =4 sqrt3 + 6 thank you though. I didn't know how it was supposed to be done.🙏