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

Question

2 years ago

5

10th of a gram?

2 answers:

OlgaM077 [116] · Answer 1 · 2022-07-19T09:47:31+03:00

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] · Answer 2 · 2022-07-19T08:15:45+03:00

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 :)