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3 years ago

11

pears cost $0.92 per pound and apples cost a dollar $ 1.10 per pound mr.bonilla bought 3.75 pounds of pears and 2.1 pounds of ap

ples how much did he pay for the pears and apples

2 answers:

podryga [215]3 years ago

6 0

how did you find the answer

vaieri [72.5K]3 years ago

5 0

In total, Mr. Bonilla paid $5.76. Individually, he paid $3.45 for the pears and $2.31 for the apples.

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Answer:

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Step-by-step explanation:

Given;

half-life of the given Dubnium = 34 s

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The time taken for the radioactive element to decay to its final mass is calculated as follows;

$1 = 500 (0.5)^{\frac{t}{34}} \\\\\frac{1}{500} = (0.5)^{\frac{t}{34}}\\\\log(\frac{1}{500}) = log [(0.5)^{\frac{t}{34}}]\\\\log(\frac{1}{500}) = \frac{t}{34} log(0.5)\\\\-2.699 = \frac{t}{34} (-0.301)\\\\t = \frac{2.699 \times 34}{0.301} \\\\t = 304.8 \ s$

Therefore, the time taken for the radioactive element to decay to 1 g is 304.8 s.

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