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Step2247 [10]
3 years ago
13

1. The population of an endangered species of bird is decreasing 15 percent each year. If there were originally 1,400 birds rema

ining,
how many are left after six years?
Mathematics
1 answer:
balu736 [363]3 years ago
7 0

Answer:

528 birds

Step-by-step explanation:

100%-15%= 85% = .85

1400 (.85)^6

= 528

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Answer: Mike's arm span is 7.165 cm longer than the George's one.

Step-by-step explanation:

We have that the association between height and arm span is modeled by the equation

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Mike is 172 cm tall, so his arm span is:

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x = (172 - 4.5)/0.977 = 171.443 cm

and George is 165 cm tall, so his arm span is:

x = (165 - 4.5)/0.977 = 164.278 cm

Then the difference between their arm span is:

171.443cm - 164.278cm = 7.165 cm

So Mike's arm span is 7.165 cm longer than the George's one.

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