Answer:
+ 1) is an even number.
Take any n ∈ N, then n is either even or odd.
• Suppose n is even ⇒ n = 2m for some m ⇒ n(n + 1) = 2m(n + 1) ⇒ n(n + 1) is even.
• Suppose n is odd ⇒ n+ 1 is even ⇒ n+ 1 = 2m for some m ⇒ n(n+ 1) = 2nm ⇒ n(n+ 1)
is even. QED
2. The sum of the first n natural num
Step-by-step explanation:
a>50A is greater than 50
a<50a<50
a≥50A is greater than or equal to 50
a≤50
Answer:
i beilive (a) is c idk i could be wrong..
Step-by-step explanation:
The answer is a parallelogram
C, the sum of the decimals is greater than one, meaning they shade more than one.
Answer:
Jeremiah is correct
Step-by-step explanati
because any number divided by 0 is 0 and can be represented on a number line.
