Answer:
All angles are equal because all sided are equal so the 1st 1 is 60 .
the 2nd is 80
Answer:
25
Step-by-step explanation:
Answer:
It's C
Step-by-step explanation: I took the test and got it wrong
A-
3x+6=18
3x=18-6
3x=12
X=4
A is the correct answer
The sum if the geometric sequence given by:
an=-2(3)^(n-1)
will be:
when:
n=1
an=-2
when n=2
a2=-6
when n=3
a3=-18
when n=4
a4=-54
when n=5
a5=-162
when n=6
a6=-486
when n=7
a7=-1458
when n=8
a8=-4374
thus the summation of the term will be:
Sn=(-4374+-1458+-486+-162+-54+-18+-6+-2)
Sn=-6560
the answer is -6560
