Recent content by Branflake

Thanks this makes me feel a little better about it. Honestly the main reason why I doubted myself is because in the lab we made similar calculations for finding everything but the mass of the metal, but the mass was always between 20g and 70g so my higher value made me concerned. Also I...

Homework Statement What is the mass of a piece of nickel metal if it is heated to 100.0°C and placed into 250.0 grams of water at 21.52°C in a calorimeter with a heat capacity of 95.3J/K and the temperature stabilizes at 25.82°C? Homework Equations -qnickel=+qwater The Attempt at a...

I feel dumb now. I knew it was something easy haha. Answers -5 thank you guys

This is where I am having problems. I do not understand how you went from 2(x+\Delta x)^2-(x+\Delta x)-7-(2x^2-x-7) to =2(x^2+2x\Delta x +(\Delta x)^2)-x-\Delta x - 7 -2x^2 +x+7 And then to the next step. Can you explain this step in a little more detail? I feel like it is just simple...

1. The question is What is the slope of the line tangent to f(x)=2x^2-x-7 at x=-1 2. Must be solved using derivatives 3. So basically i know the equation (f(x+deltax)-f(x)/deltax) So i plug in the problem and i get (2(x+deltax)^2-(x+deltax)-7)-(2x^2-x-7) Now i know what the...

Ok after doing some research and attempting the MIT open courseware class I feel that I need to go through a pre calc course (or textbook) in order to truly understand the class I am taking in the fall. I understood some of the things in the first two sections, but I feel that I really need to...

Wow! I am looking at the course now and it looks awesome. I may not need a textbook now thank you so much.

Yeah I have never taken a calc (or pre calc) class before. The spivak book did look a little rough haha. But basically I just want to go into my calc course in the fall and be able to under stand it and hopefully know some of the things before hand so I can do well. Honestly I just want to...

Hello everyone, I am currently using khan academy to teach my self trig and refreshing my memory on some algebra things I have forgot since I haven't taken a math course in 3 years. (algebra 2 was the last course). I have almost finished all the practice on khan with trig and am now ready for...

Thank you for the site i am checking it out now. Another questions guys. Should i grab a precalc/math analysis book instead or just jump into calc

Hello everyone! A little background story here. I am 19 in jc. Had many health problems my junior and senior year in high school (4 surgeries) and this caused me to be very lazy with my school work. I basically bs'd my way through algebra 2, had a terrible chemistry teacher, and bs'd my way...