Answer:
Step-by-step explanation:
Hello, please consider the following.
So this is divisible by 3.
Now, to prove that this is divisible by 9 = 3*3 we need to prove that
is divisible by 3. We will prove it by induction.
Step 1 - for n = 1
4+17=21= 3*7 this is true
Step 2 - we assume this is true for k so 
is divisible by 3
and we check what happens for k+1
is divisible by 3 and
is divisible by 3, by induction hypothesis
So, the sum is divisible by 3.
Step 3 - Conclusion
We just prove that is divisible by 3 for all positive integers n.
Thanks
Answer:
21.5
Step-by-step explanation:
19^2+10^2=461
square root of 461 =21.47091055
round to the nearest tenth to get 21.5
If you skip a warm up, you increase the greater change of oxygen dept.
Hope this helps!
@SamSamySamantha!
Answer:
Its been good so far. My stomach hurts a little it but I ate a chocolate muffin and a UN-crust able so that's good
Step-by-step explanation:
