The answer is b hope this helps
Answer:
Part 1) 
Part 2) 
Step-by-step explanation:
Part 1)
we know that
The perimeter of triangle is equal to the sum of its length sides
so

Part 2)
we know that
The area of triangle is given by the formula

we have

substitute

20% = 0.02
82 * 0.02 = 1.64
82 + 1.64 = 83.64 = 84 (rounded)
Answer:<span>his second math test score was 84</span>
Answer:x equals 6/7
Step-by-step explanation: