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root3 (root6 + root12) can be written as Aroot2 + B

root3 (root6 + root12) (root3 * root6 ) + (root3 +root12) = root18 + root36= (root9 + root2) + 6= 3root2 +6a= 3 b = 6
DM
Answered by Dorcus M. • Maths tutor
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v^2 = u^2 + 2as u = 12 a = –3 s = 18 (a) Work out a value of v. (b) Make s the subject of v^2 = u^2 + 2as

v^2 = 12^2+2(-3)(18) = 36. Therefore by square rooting v = 6.To make s the subject first minus u^2 from both sides to have v^2 -u^2 = 2as then divide 2a from both sides to have (v^2-u^2)/2a = s
HN
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A bottle contains 300ml of medicine, the dose for a child can be given by (m*a)/150 where m is the child's age in months and a is the adult dosage of 40ml. If you need 2 doses a day, how long will the medicine last until it's empty for a 2y/o child?

1) Work out the dosage required by the child per day 2 years old in months is 12 2 = 24. (12 is the number of months in a year and 2 is the child's age.)24 40/150 = 6.4 ml (Using the formula given to us from...
HN
4694 Views

Look at this diagram of a methane molecule. Which statement about methane is correct? - A) Electrons are transferred from hydrogen atoms to carbon atoms. - B) The covalent bonds in methane are weak.

(didn't fit:)C) The force of attraction between methane molecules is weak. D) The ionic bonds between carbon and hydrogen are very strong.Answer: C
SK
Answered by Shivani K. • Chemistry tutor
5738 Views

a) Compare the differences between an artery and a vein. b) List and explain 2 features that allow capillaries to exchange substances efficiently.

a) Veins have a larger lumen and a thinner wall as they carry blood at a lower pressure than the blood in arteries. Due to this low pressure, veins have valves to assist with the continuous movement of blood...
ZG
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