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Tasya [4]
3 years ago
5

If 50 grams of a radioactive substance decomposed to 42 grams in 2 years, then, to the nearest gram, the amount left after 5 yea

rs is
30 grams

32 grams

22 grams

40 grams

28 grams
Mathematics
1 answer:
Inga [223]3 years ago
3 0

Answer:

30 grams

Step-by-step explanation:

50-42=8

8÷2=4

4=1 year

5×4=20

50-20=30

Hope u can understant

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7 0
3 years ago
Mr. Moore planted a tree in his backyard. His tree grew 3 1/3 feet over five years. if his tree grew at the same rate each year,
alina1380 [7]

Answer:

D. 2/3 per year.

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4 0
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nataly862011 [7]

Answer:

b. False

Step-by-step explanation:

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