Answer:
y = mx + b
mx = slope
b = y intercept
mx = 2/1
Rise 2, Run 1 = slope
y = 2/1x + b
b = (0,2)
y = 2/1x + 2
If AበB=(abc) and AበC=(1 2 3) then find Aበ(BሀC)
1 answer:
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Answer:
A) 277 million years
Step-by-step explanation:
Here, decay of U-238 is first order reaction. (since most of the nuclear decays are first order).
so, the equation t = × ln(
)
where, t = time from start of reaction
k = reaction constant
A(0) = initial concentration; A = present concentration.
⇒ 4.5 billion = 4500 million years = × ln2.
Now, given 95.82% of parent U-238 isotope is left.
⇒ t = × ln(
)
t = × ln(
)
⇒ t ≅ 277 million years.