VivaPersia

Please answer the question circled and give a step by step answer :) thank you

Please answer the circled question :)

Can you please answer the circled one?

The answer is 21.4 litres. I need the step by step solution not just the answer. Anyone that help will be appreciated :) thanks

For this question I know my logs very well and I am not looking for the just the answer because I already know it but I just dont know how to bring the power 3/2 over ?? What does it become and how do I tackle it ??

Thanks :)

I need a step by step for this one please ? :)

This is the last question in a paper 2 and it's a practise paper

I have drawn the circle out with y=20 being a tangent along with the x axis also a tangent. I have also done the second bullet point but the third bullet point says that "the centre lies in the first quadrant....I have no idea what that means...? I would appreciate someone to help me out pls :)

Thanks

Differentiate : ?

I only need help with 36 and 37 only :( I have no clue how I go about this question ?

I need a step by step explanation for this please :/ ?? Thanks

The first couple of questions are supposed to be standard grade questions but I cant remember standard grade :( I need a detailed explanation for these two questions ?? :)) thankss