Answer:
17,190 years
Explanation:
Each isotope has a characteristic half-life, which is the time required for half of that isotope to decay. After one half-life has elapsed, 50% of the isotope has decayed and 50% remains. After two half-lives, 75% has decayed and 25% remains. After three half-lives, 87.5% has decayed and 12.5% remains. For carbon-14, which has a half-life of 5,730 years, three half-lives corresponds to 17,190 years.
For number 2 I would say C because take a square for example which is a quadrilateral has all 90 degree interior angles so does a rectangle. As for number 3 I would say maybe A or B I’m a bit confused to as what the question is asking. Hope this helped a bit though and good luck!
Answer:
It is a pie chart.
Explanation:
This means Canada uses mostly natural gas as energy
