Step-by-step explanation:
<h3>>> ▪︎ 3x-ax=2x+5 ▪︎<< </h3><h3>>> ▪︎ 3x-ax-2x=5 ▪︎<<</h3><h3>>> ▪︎x(3-2-a)=5 ▪︎<<</h3><h3>>> ▪︎x=5/1-a ▪︎<<</h3>
The scientist that made a more concentrated salt solution is scientist A.
<h3>How to compute the value?</h3>
Since Scientist A dissolved 1.0 kilogram of salt in 3.0 liters of water. The concentration will be:
= 1/3 = 0.33
Scientist B dissolved 2.0 pounds of salt into 7.0 pints of water. The concentration will be:
= 2/7
= 0.285
Therefore, the scientist that made a more concentrated salt solution is scientist A.
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The way you'd set it up would be sin55º/12=sinB/14 (you could also flip the equation so that 12/sin55º=14/sinB, you'll get the same answer either way). Multiply out so that its 14•sin55º=12•sinB, or 11.47=12•sinB. Divide both sides by 12 so that it looks like .96=sinB, then take arcsine of both sides (arcsin= x=sin^-1 theta+360n or x=180- (sin^-1 theta)+360n), which should give you about 72.88º and 107.12º.
Really hope this proves useful to you, any further questions please ask :)
