# Search results

1. ### Couple of math questions

Thank you both so much! On the 2nd problem, is the answer 29.17%?
2. ### Couple of math questions

I have a couple math questions that I am a bit rusty with. I know they are probably really easy, but bare with me, as I haven't done problems like these in a while. Here we go: A man makes $75,000. He must pay federal personal income tax of 10% on the first$12,000 of his income, 15% on...
3. ### Mean Value Theorem Problem

Thanks! I think I know what to do now. I really appreciate it!
4. ### Mean Value Theorem Problem

I'm having a some difficulty with this problem: Fidn the value(s) of c guaranteed by the Mean Value Theorem for Integrals for the function over the indicated interval: f(x)=x - 2(square root of x) Interval: [0,2] I found the integral to be: x^2/2 - 4/3 x^3/2, then I solved for the...
5. ### Help with 2 Physics questions

Hm.. I'm still don't know what to do. My physics teacher told us that when an object is hanging vertically force normal and force weight are the forces we use in the free body diagram. We haven't done any problems like these in class. We've only used Hooke's law and Work=1/2kx^2. Thanks for...
6. ### Help with 2 Physics questions

For the first problem do I do something like this(?): Force normal=ma-Force weight Force normal=ma-umg
7. ### Help with 2 Physics questions

My physics teacher gave me the following two problems as homework and I am completely lost on them. 1) If you cut a spring in half, the k value doubles. An object is attached to the lower end of a 100-coil spring hanging from a ceiling. The spring stretches by 0.16 m. The spring is then cut...
8. ### 2 Calculus questions

Now I understand! I was having a bit of a mental block at hte moment... Thank you very much! :)
9. ### 2 Calculus questions

Okay, I'm still having trouble with the second question. I know I may sound really stupid, but I tried to solve it by doing f(x)=(2x-5+3), and did not get the correct answer. What am I doing incorrectly?
10. ### 2 Calculus questions

Thanks for the reply! I think I'm starting to remember this... Yeah I know these aren't really calc questions, but they were in the beginning section of my calc. book. Thanks for your help!
11. ### 2 Calculus questions

I have two Calculus problems I need explained because I'm studying for a final exam and I forgot how to do these things: #1: Find the point that lies on the line determined by the points (1,-2) and (-3,1). The answer is (5,-5), but I don't know why... #2: Write an equation satisfied...
12. ### Help with apparent weight problem

It doesn't specify where in the loop the plane is. I just want to know how to get through this problem. I'm so confused! :(
13. ### Help with apparent weight problem

I need help with a physics problem ASAP please :) I am currently in AP Physics and we are studying centripetal force. My teacher gave me a problem that is driving me crazy because I don't know where to begin with it, and I have a test tomorrow... Here's the problem: An airplane pulls out...