Let r be the decay rate (time in minutes) 17 = 20 e^(5r) 0.85 = e^(5r) ln 0.85 = 5r similarly, ln 0.5 = hr ... where h is the half-life, so dividing the 2 equations, ln 0.85 / ln 0.50 = 5r / hr = 5/h h = 5 ln 0.50 / ln 0.85 h = 21.3 min b) 1/20 = 0.05, so ln 0.85 = 5r ln 0.05 = tr t = 5 ln 0.05 / ln 0.85 t = 92.2 min
Answer:
where is the question.
So basically rational numbers are numbers with decimals that are not random
ex) 3.66666666, 4.040404040, 3.5645645645646
the decimals are at a fixed order
Irrational is random decimals that makes it look weird
ex)3.141592643, 5. 782759453, 8.825928342
hope that answers your question
Step-by-step explanation:
Answer:
B) 6
Step-by-step explanation: g = x - 9, g = 15 - 9. 15 - 9 = 6.
Answer:
7
Step-by-step explanation:
7 shows up twice
all other numbers show up only once.
