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Michael Stone

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use M1V1=M2V2 where M1 is the molarity of the stick solution and M2 is the desired molarity. V2 is the disired Volume and then u solve for V1, which is how much water you dilute it with. so, (12M)V1=(8M)(2.15L) V1=((8)(2.15))/(12) and finally V1 = 1.43L To
Rate = Distance/Time Rate = 500Miles/5Hours Rate = 100Miles/Hour
Narwhal
Use Pythagorean Theorem; a^2+b^2=c^2, where b^2 is the height you are looking for. so solve for b after plugging in a=6 and c=10. SO; (6)^2 + (b)^ = (10)^2 Then 36 + (b)^2 = 100 Next subtract 36 from both sides (b)^2 = 64 Then take the Square root of both
i Would say c because the correct use of the significant figures. if the students only wrote down what student A or B got it would not be a "full" measurement.
99*9 = 891; because after 99, numbers become 3 digits, so 99 is the highest possible 2-digit number. and after 9, numbers become 2 digits, so 9 is the highest possible 1-digit number.

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