Answer:
- 85
Step-by-step explanation:
The n th term of a geometric series is
= a
where a is the first term and r the common ratio
1
← is the n th term of a geometric series
with a = 1 and r = - 2
The sum to n terms of a geometric series is
= 
= 
= 
= 
= - 85
Step 2 is incorrect the sum of the 2 angles should be 180 degrees, not 90
Frist you simplify the mixed number: We have a 4/8. To simplify, we will use the common factor 4. Divide the numerator and denominator by 4 and you will get 1/2.
Answer:
(1/2,7/4)
Step-by-step explanation:
x=-b/2a
x=1/2
y=(1/2)^2-(1/2)+2
y=1/4-2/4+8/4
y=7/4
Answer:
B,C,D
Step-by-step explanation: