Length: 12
Width: 4 since 12x4=48 and length is 3 times as long as it is wide.
Answer:
Precambrian period
Step-by-step explanation:
Since the Great oxidation period = 2.4 Billion years ago era = Precambrian period.
Micro-fossils attributed to cyanobacteria are abundant during the Proterozoic that came later 2,5 billion years ago and ended 540 million years ago,
Answer:
38.75
Step-by-step explanation:
perimeter = 2(15.6+3.8) =38.8
lower bound = the smallest value that would round up to the estimated value =38.75
Nearest tenth is the number right after the decimal. If the number to the right of it is 4 or lower leave it how it is, and if the number to the right of it is 5 or greater than round up one.
17.9/2.38 = 7.521 ... Answer is = 7.5
