He would need to exercise for approximately 14 minutes to get to 120 bpm
Answer:

Step-by-step explanation:
For any triangle, the Law of Cosines is given by
, where all three variables are interchangeable.
Therefore, we have:

I would say the answer is b. -8/10
Answer:
Step-by-step explanation:
Perimeter of the figure = 6x - 4 + 6x - 4 + 12x +3 + 14x+ 13 + 12x + 3
Add like terms
= 6x + 6x + 12x + 14x + 12x - 4 - 4 + 3 + 13 + 3
= 50x + 11