Which conic section does this equation represent?
2 answers:
Answer:
Hyperbola
Step-by-step explanation:
Lets write variables in square form using completing the square method
LEts group x and y terms
y^2 terms should be positive always, so we pull out negative sign from y^2
We have negative sign in the middle. so we will get equation in the form of
If we have negative sign in the middle then it is an hyperbola
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Answer:
1) 62.5
2) 50
3) 75
4) 100
Step-by-step explanation:
1)
Because it has a half-life of 25 days, half of it will decay after 25 days.
After days, there will be
of it left.
So, .
2)
Because it has a half-life of 25 days, half of it will decay after 25 days.
After days, there will be
of it left.
So,
3)
Because it has a half-life of 25 days, half of it will decay after 25 days.
After days, there will be
of it left.
So, .
4)
The only answer left is grams. You can solve it the same way you solved the previous steps.