Answer:
They're supplementary angles AND same-side interior angles.
Answer:
Distribute
Subtract
two from both sides of the equation
Simplify
and that's your solution
which should be t=4
Step-by-step explanation:
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 