If he is 4 now is in 10 years he will be 14 and if you multiply that by 2 you get 28 which means in 10 years Marie will be 28 so that means if you take away 10 the answer should be 18 but that isn't there but that's how I would work it out.
Answer:
a<x<b
Explanation:
A is less than X, which is less than b. Could also be a>x>b
Huh
Hshhdhxjuwndodgendxubs
The answer is W.E.B. Du Bois
1 mol KMnO₄ contains 4 mol O, which has a molar mass of about 15.999 g/mol. Then the mass of O in the sample is
(4 mol) (15.999 g/mol) ≈ 63.996 g
