Answer:f ( x - 1 ) = 3x² - 5x - 7
Step-by-step explanation:
Answer

Step-by-step explanation:
First we gave a name to the side that is common for both triangles, can be Y for example.
Using trigonometric functions we can make a relationship between the two angles that we have and the magnitud of the side.
, Because sin(x)= op/hip
, Because con(x)=ad/hip
Having this equations, we can solve the system and find x

we equal Y and solve

Then we rationalize

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Answer:
300
Step-by-step explanation:
Answer:
2.60 gr
Step-by-step explanation:
We need to consider the function
where Po is the initial substance k is the rate of decay and t is the time
We know that
and at the 7 th year P(t) is 7
This means

We solve for k
