Answer:
15,008 grams
Step-by-step explanation:
You have 30,016 grams of radioactive kind of rubidium. How much will be left after 54 minutes if its half-life is 18 minutes? 15,008 grams.
Let her monthly salary be x
1/8x = $65
x = $65 × 8 = $520
Her weekly pay is $520 ÷ 4 = $130
If a root is a+√b then another is a-√b because of quadatic formula
r2=1-√5