Answer:
80,000 people would answer in a town of 200,000 people
For it to triple its weight, it would need to be 300 grams. It already starts off with 100 grams, and so it needs to gain at least 200 grams in x days. If it gains 8 grams a day, we can calculate the number of days it takes to gain 200 grams by dividing. 200/8 = 25. So, it would take the kitten 25 days after its birth to triple its weight.
I:2x – y + z = 7
II:x + 2y – 5z = -1
III:x – y = 6
you can first use III and substitute x or y to eliminate it in I and II (in this case x):
III: x=6+y
-> substitute x in I and II:
I': 2*(6+y)-y+z=7
12+2y-y+z=7
y+z=-5
II':(6+y)+2y-5z=-1
3y+6-5z=-1
3y-5z=-7
then you can subtract II' from 3*I' to eliminate y:
3*I'=3y+3z=-15
3*I'-II':
3y+3z-(3y-5z)=-15-(-7)
8z=-8
z=-1
insert z in II' to calculate y:
3y-5z=-7
3y+5=-7
3y=-12
y=-4
insert y into III to calculate x:
x-(-4)=6
x+4=6
x=2
so the solution is
x=2
y=-4
z=-1
Answer: circumference
Step-by-step explanation: