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kherson [118]
3 years ago
5

An element with mass 330 grams decays by 25.5% per minute. How much of the element is remaining after 5 minutes, to the nearest

10th of a gram?
Mathematics
2 answers:
OlgaM077 [116]3 years ago
8 0

Answer:

<h2>After 5 minutes, it remains 75.73 grams of mass.</h2>

Step-by-step explanation:

Each minute, the mass is decreased by a 25.5%. So, we can find the mass after each minute period.

<h3>First minute.</h3>

330gr-0.255(330gr)=(330-84.15)gr=245.85 gr

<h3>Second minute.</h3>

245.85-0.255(245.85)=245.85-62.69=183.16gr

<h3>Third minute.</h3>

183.16-0.255(183.16)=183.16-46.70=136.45gr

<h3>Fourth minute.</h3>

136.45-0.255(136.45)=136.45-34.80=101.65

<h3>Fifth minute.</h3>

101.65-0.255(101.65)=101.65-25.92=75.73gr

Therefore, after 5 minutes, it remains 75.73 grams of mass.

babymother [125]3 years ago
7 0
Equation: 330-.255(5)=X. Multiply: .255(5)=1.275, 330-1.275=X. Subtract: 330-1.275=328.725 or 328.73 :)
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