3 years ago

Really need help, all is appreciated. Which ordered pair is a solution to the system of equations?

1 answer:

4 0

For this problem, all you would need to do is plug in numbers for x and y into the calculator. However, none of the ordered pair is a solution to the equations. Unless.. I made a mistake.

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The half-life of a radioactive substance is 200 years. There are 8000 grams of the substance initially. How many grams of the su

STALIN [3.7K]

Answer:

There are 2,000 grams left after 300 years.

Step-by-step explanation:

Giving the following information:

The half-life of a radioactive substance is 200 years. There are 8000 grams of the substance initially.

First, we need to calculate the reduction of the substance each year:

Yearly reduction= 8,000/400= 20 grams per year

Now, for 300 years:

300 year reduction= 20*300= 6,000

There are 2,000 grams left after 300 years.

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