3x subtract 5y equal 10
1 answer:
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Answer:
Step-by-step explanation:
We know that the general form of the exponential decay formula is
, where y is final amount remaining after t time, A is the original amount and r is the rate of decay
Now, the ratio of strontium-90 remaining, p , as a function of years, t , since the nuclear accident.
Hence, the ratio of remaining since the nuclear accident is
Answer:
CA ≈ 3.1 ft
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan40° = =
=
( multiply both sides by CA )
CA × tan40° = 2.6 ( divide both sides by tan40° )
CA = ≈ 3.1 ft ( to the nearest tenth )