7. Charlotte road her bike on a mountain trail. It took her 20 minutes to travel 4.5 miles on the trail. What was Charlotte's average speed in miles/minute rounded to the
nearest hundredth?

How many pounds does the earth weigh?

How do light years astronomers to determine the ages of distant objects in space ?

The lionfish is a venomous fish found primarily in the red sea and the indian ocean. in the 1990s, lionfish were accidentally released into the atlantic ocean, where they found abundant resources and favorable environmental conditions. which of the following scenarios is most likely to result in the lionfish having a major impact on the communities into which they were introduced? (a) with no natural predators, the lionfish population will become very large. (b) some native species of invertebrates will develop a resistance to lionfish venom. (c) random mating will allow the lionfish population to reach hardy-weinberg equilibrium. (d) a virus that specifically infects lionfish