A form of radium decays exponentially with a half-life of 20 years. This means that 50% will be gone every 20 years. A human can
only withstand an exposure of 5 grams of this radium but 150 grams has leaked into the air. Part A: Write an equation to model the exponential decay of this 150 grams of this form of radium.
Part B: A scientist claims that the area will e safe for humans after 100 years. Do you agree? Verify your answer mathematically and explain why you agree.
<h2>✔Answer</h2><h2>✏PartA:-</h2><h2>Exponential decay describes the process of reducing an amount by a consistent percentage rate over a period of time. It can be expressed by the formula y=a(1-b)x wherein y is the final amount, a is the original amount, b is the decay factor, and x is the amount of time that has passed.</h2><h2>✏PartB:-</h2><h2 /><h2>The Earth could look like within 100 years if we succeed in curbing climate change.</h2><h2>Hopeithelps.❤</h2><h2 />
We have that [Volume of the pencil]=[Volume of <span>cylinder]+[volume of cone] </span>[Volume of cylinder]=pi*(0.5²)*15=11.78 cm³ [volume of cone]=pi*(0.5²)*2/3=0.52 cm³ [Volume of the pencil]=[11.78]+[0.52]=12.30 cm³
