thank you, Brent!
as always you made it perfectly clear

a wire cut into 2 pieces

Dear friends, is it possible to make a good guess in this question? A thin piece ow wire 40 meters long is cut into two pieces. One piece is used to form a circle with radius R, and the other is used to form a square. No wire is left over. Which of the following represents the total area, in square ...

Increasing crime commited by teens

Hi everybody! I am definetely lost in this question. The stem asks what argument would weaken the conclusion. I understand that the conclusion is that the solution made by city authorities in unlikely to affect the problem. Thus the weaking argument must prove the opposite - that measures taken ARE ...

arithmetic mean

What is the average (arithmetic mean) of eleven consecutive integers?

1. The average of the first 9 integers is 7
2. The average of the last 9 integers is 9

Correct answer is E

Please help to understand the reasonning.

Thank you very much! =) appeared to be easier than it looks

functions

Dear friends, I have zero understanding of task and way to solve it. Please help.

For which of the following functions f is f(x)=f(1-x) for all x?

A. f(x)= 1-x
B. f(x)= 1-x^2
C. f(x)= x^2-(1-x)^2
D. f(x)= x^2(1-x)^2
E. f(x)= x/(1-x)

correct answer is D

13th edition. Problem solving, â„– 70

In solution authors use miles per hour to represent speed, but feet to represent distance. Shouldn't we first choose one measurement? e.g. use only feet both for speed and distance or only miles for speed and distance. Can we divide feet by miles? I always thought that no. Could anybody please clari...