Recent content by travism123

I am positive that you are right Mark. The actual question was easier: If a + 2b = 14 and 5a + 4b = 16 what is the average (arithmetic mean) of a and b? (a) 1.5 (b) 2 (c) 2.5 (d) 3 (e) 3.5 The answer is 2.5. (6a + 6b = 30)/6 = a + b = 5 5/2 = 2.5 I think that I made it...

Thank you Mark. I guess that I still don't understand why this is wrong. If I solve the equations I get: x=5 and y=10 So the way that I am looking at it, I have a group of ten 5's and nineteen 10's. If I want to find the mean value for this group then wouldn't it make sense to add...

Homework Statement When finding the arithmetic mean in a system of equations is there any reason why the method that I am using is wrong? Find the arithmetic mean of x and y in the following set of equations Homework Equations 3x + 5y = 65 and 7x + 14y = 175 The Attempt at...

Thank you very much.

Does this look right? Aluminum wing is 30m at 20*C. At what temp would it be .05m shorter. ∆T = ∆l / α x l ∆T = -.05m/(25 x 10-6/*C) x 30m ∆T = -66.667 The wing would be at -46.667*C to be .05m shorter.

I'm sorry if I sound stupid not being able to figure this question out. The truth is I probably have no business being in a physics class. I'm going to school to be a therapist and am taking this class to fill a science requirement. I'm sure there are easier classes I could've taken, but a...

Sorry, I messed up the coefficient. It's 25 x 10^-6/*C

I have no idea.

Homework Statement Aluminum wing is 30m long at 20*c At what temperature would the wing be .05m shorter? The coefficient for linear expansion of aluminum is (16 x 10^-6/c) I have no idea how to do this. I don't want an answer. Just an equation or a hint on what to do. Thank...