Answer:
for number one, look at the screenshot attached, that should help
Step-by-step explanation:
A=a+b/2·h=9+4/2·3.5=22.75
Hoped I helped!
Answer:
hi!
Step-by-step explanation:
u look beautiful
Thanks for the pts
✌️❤️✌️
C
the sum to infinity of a geometric series = 
where a is the first term and r the common ratio
=
= 81 × 3 = 243
5a(b-c)=d. Here, we are trying to isolate the variable b.
Divide both sides by 5a: b-c=d/(5a)
Add c to both sides: b=