Answer:
See explanation below
Step-by-step explanation:
All the odd numbers can be written as 2n-1 where n is an integer.
The sum (S) of the first n positive odd numbers can be written as:

If we change the order to a decreasing order we would write it this way:

Let's sum up both equations, we are going to pair the first number of our first equation with the first number of our second equation, we can see that each pair sums up 2n ( let's see this: (2n-1 + 1 =2n, 2n-3 + 3 = 2n, 2n-5 + 5 = 2n...)) therefore we would get n pairs that sum up 2n.

Therefore, the sum of the first n positive odd numbers is square.
Answer:
2
Step-by-step explanation:
The degree of the polynomial ...

is the largest exponent of x: 2.
This polynomial has degree 2.
Your answer is not correct.
The correct answer is the third one:
-No, because the distance from the origin to point (7,-7) is greater than the radius of the circle.
Answer:33
Step-by-step explanation: i just did the problem
Answer:
result is 20%
Step-by-step explanation:
initially B was 100%
therefore 100% - 40%
=60% remaining
60% - 40%
= 20%