Answer:
12x-15
Step-by-step explanation:
A triangle has 3 sides
An equilateral triangle has 3 sides that are all the same length
The perimeter of a triangle is
P = s1+s2+s3
P = 4x-4 + 4x-5+4x-5
Combine like terms
P = 12x -15
Time taken=distance/speed=125/65=1.92hoursprecisely 1hr55mins12secs
The answer is 48 x 48 = 2304 so 2304 x 48 = 110592
20% of $175 is $35. Divided between 5 people (35/5=7) would be 7. So each person should tip $7.