<span>The object's speed is 8/5 miles per hour or 1.6 mph.</span>
Answer:
The simplified version of this expression is
-2x + 15
Hope this helps!!
Answer:

Step-by-step explanation:

21^2/0.219 = 2013.69863
2 significant figures are the 20, so the answer is 2000
Sapien because the word homo in homo sapien is the genus name, while the word sapien is the species name.