Answer: Can you give more details
Step-by-step explanation:
<span>The half-life of helium-5 is 7.6 × 10^{-22} seconds, and the half-life of helium-9 is 7 × 10^{-21} seconds.
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Approximately

the half-life of helium-9 is greater <span>than that of helium-5.</span>
Answer: 9 times.
Answer:
The angle is [/tex]64.1581^{\circ}[/tex]
Step-by-step explanation:
You can figure this out using the sine function:
