Suppose that this person drives at r mph going to the mountains, and gets there in 12 hours. Returning, this person drives at (r+20) mph and gets home in 8 hours. We don't know the distance yet, but can solve for the initial speed, r, by setting
d = 12r = (r+20)(8). Solving for r, r=40 mph (going) and (40+20)mph = 60 mph (returning. Since d=12 r, d = (12 hrs)(40 mph) = 480 miles (answer).
Answer:
<em>Each side is 10 meters</em>
Step-by-step explanation:
Because since area is length times width, you would do 10x10 which is 100
Answer:
0.04%
Step-by-step explanation:
If there are 1000 penguins per square miles, <em>the total number of penguins in a 10 square miles will be 1000*10 = 10,000 penguins/10square miles</em>
Since a polar bear has a territory of 10 square miles, and<em> can only eat four penguins within the 10square miles;</em>
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Percentage of penguins that the polar bear can eat will be expressed as;
number of penguin eaten per 10square miles/total number of penguin per 10square miles * 100
Percentage of penguins that the polar bear can eat = 4/10,000 * 100%
Percentage of penguins that the polar bear can eat = 4/100%
<em>Hence, the percentage of penguins that the polar bear can eat in the 10 square miles is 0.04%</em>
Answer: the water increases by 2 every hour
Step-by-step explanation:
