i think maybe ? x+20*2=5-2*x
The answer actually is 4,245 BUT that is the correct way to do it because you take the smaller population away from the larger population in order to find their difference in sizes.
Answer: 421.20 km
Step-by-step explanation:

421.20km
Its right and isosceles because the little squares means that's it's a right triangle. And the lines means it's identical which an isosceles has two identical lines
Answer:
d = 15 miles
Step-by-step explanation:
To get to his parents’ house, Ruben would have to drive due north 12 miles.
To get to his grandparents’ house, he would have to drive due east 9 miles.
It is required to find the distance between the parents’ and grandparents’ houses.
First distance is 12 miles and second distance is 9 miles.
So,

So, the distance between the parents’ and grandparents’ houses is 15 miles.