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
The given triangle is
To solve for PR, we have to use the sine function which is equivalent to the ratio between the opposite leg and the hypothenuse.
<h2>Hence, PR is 37.04 mm long, approximately.</h2>
Answer:
9.72
Step-by-step explanation:
How you wrote it is kind of confusing but if I'm reading what you're saying right. There are 2028 . <span />
Answer:
11.1
Step-by-step explanation:
G o o g l e
