I think the answer is option 3.
<span>3c - 2cd - 8c + 7d
= -5c </span> - 2cd + 7d
hope it helps
Answer:
13.636
Step-by-step explanation:
The area can be found using Heron's formula:
A = √(s(s-a)(s-b)(s-c))
where s=(a+b+c)/2.
For the given triangle, ...
a=9, b=4, c=12, s=(9+4+12)/2 = 12.5
A = √(12.5(3.5)(8.5)(0.5)) = √185.9375 ≈ 13.636
The area of the triangle is about 13.636 square units.
Buddy what is the problem lol
I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wtjfavyw