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3 years ago

The current population of a threatened animal species is 1.2 million, but it is declining with a half-life of 20 years. How many

animals will be left in 25 years? in 55 years?

Mathematics

1 answer:

Allisa [31]3 years ago

6 0

$Rate:\frac{1,200,000}{20}$
$Unit\ Rate:\frac{60,000}{2} = 30,000$

$25\ Years:750,000$
$55\ Years:1,650,000$

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4 years ago

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4 years ago

Hello, maybe you could please take 5 minutes out of your day to help me please :) id really appreciate it!

Vadim26 [7]

Answer:

Step-by-step explanation:

Alright, so we know that they can unload 25 trucks in 5 hours.

If we do 25/5 We find out that they can unload 5 trucks per hour

Unfortunately, that is not one of the answers, so we will have to do some investigating to find something that is equivalent!

After evaluating the available answers, you can find that answer D lines up with our first assumption!

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3 years ago

Y = 2x - 3 y = 2x + 1

ryzh [129]

Answer:

No solution.

General Formulas and Concepts:

Algebra I

Solving systems of equations by graphing

Step-by-step explanation:

If the lines are parallel, they will have no solutions.

If the lines are the same, they will have infinite solutions.

If the lines are anything else, they will usually have 1 solution.

If we graph the systems of equations, we see that the lines are parallel.

∴ the systems has no solution.

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3 years ago