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Mathematics

2 answers:

laila [671]3 years ago

7 0

Did you add the picture I can’t see it

puteri [66]3 years ago

4 0

Answer:

4 and 1/6

Step-by-step explanation:

3/3 + 1/2 + 8/3

6/6 + 3/6 + 16/6

9/6 + 16/6

25/6

4 1/6

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3: Bismuth-210 has a half-life of about 5 days. After 15 days, how many milligrams of a 600 mg sample will remain? A O 75 mg B O

allochka39001 [22]

Radiologically, half lives describe the amount of time it takes for half the amount of the radioactive substance to decay. If you had 100g of a radioactive substance with a half life of one week, in seven days, only 50g would remain, and after another week, only 25g.

Fifteen days contains three half lives since the half life is 5 days long. Divide the starting amount by 2 for each half life that passes.

600g - 300g (1 HL) - 150g (2 HL) - 75g (3 HL)

So, only 75g of Bismuth-210 would remain after 15 days.

5 0

4 years ago

Read 2 more answers

Number 6 pls help meeeeeeeeeeeee

GarryVolchara [31]

Answer:

your answer would be D

Step-by-step explanation:

8 0

3 years ago

What is the answer to y=-3+5

Nookie1986 [14]