The half life of a decaying substance is defined as the time at which the substance decreases to one-half of its original value. In this case, given hlf-life of 10 years and an original mass of 50 grams, after 10 years, the isotope mass becomes 50*0.5 or 25 grams. Answer is B.

5 0

2 years ago

Costs $17.60 for a pack of 4 padlocks.Find the unit price in dollars per padlock.If necessary, round your answer to the nearest

mel-nik [20]

4=$17.60

1=$17.60/4

1=$4.40

Hole this helps :)

6 0

2 years ago

Evaluate the series 9 + 3 + 1 + . . .

brilliants [131]

Keep dividing by 3 to get the rest of the answers.

7 0

2 years ago

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