an=4n+1
Sum of first 30 terms
a1+a2+.................a30
Sn=(a1+an)*n/2
a1-----------first
terms
an=---------last
term-----a30
n= number of
terms-----30
calculation of a1
a1=4n+1=4*1+1=5
calculation of an
a30=4*30+1=121
S30=(a1+a30)*30/2
S30=(5+121)*30/2=1890
<span>The sum of first
30 terms is 1890</span>
Answer:
120000000000000000
Step-by-step explanation:
1.2*10^17
The answer is b y⁢ 2x+2
Answer:
It is a same size scalene triangle as the original triangle.
Step-by-step explanation:
:)
10 and -12
Step-by-step explanation:
10x-12=-120
it said it needed to be 20 characters long. so this is me making it that
