Triangle angles add to 180 degrees.
x = 180 - 70 - 30 = 80
Answer: 80 degrees
Hi,
I don't think they are because the right angle sign is not there in angle AFB.
Hope this helps you.
Answer:
2,792.58
Step-by-step explanation:
4200.00 to E would be 2792.58
112 to cad is 168.36
sorry if i didnt do it right
Answer:
n(n+1)(n+5)/3
Step-by-step explanation:
there is no value, as we don't know n.
but we can create a summary formula/ function definition :
this is the sum for k = 1 to n of k×(k+3)
k×(k+3) = k² + 3k
so, the overall sum splits into the sum of k² for k=1 to n, and the sum of 3k for k=1 to n.
and the sum of 3k is 3 times the sum of k for k=1 to n.
Σk² for k=1 to n = [n(n+1)(2n+1)]/6
Σk for k=1 to n = n(n+1)/2
3×Σk for k=1 to n = 3×n(n+1)/2
so, we have a function formula
n(n+1)(2n+1)/6 + 3n(n+1)/2 = n(n+1)(2n+1)/6 + 9n(n+1)/6 =
= n(n+1)(2n+1+9)/6 = n(n+1)(2n+10)/6 = n(n+1)(n+5)/3
Answer:
No solution
Step-by-step explanation:
We have
For the sum it is not correct to assume
Note that for
it is assumed 
and in your case 
for 
In fact, considering a set 
we have
that satisfy 
This means that, by definition 
Therefore,
because the sum is empty.
For
we have other problems. Actually, this case is really bad.
Note that 
has no value. In fact, if we consider for the case
, the cosine function oscillates between ![[-1, 1]](https://tex.z-dn.net/?f=%5B-1%2C%201%5D)
, and therefore it is undefined. Thus, we cannot evaluate
and then
has no solution
