Which statement describes the relationship between the papacy and Charlemagne during the early Middle Ages? a
They often needed each other’s help in order to maintain power.
b
They frequently encouraged attacks on each other’s power.
c
They seldom came to each other’s aid when power was threatened.
d
They acted independently of each other to prevent disputes.

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69

"germany's geographic location was an advantage when it was on the offensive in the war because it was situated next to an extremely wide river, the rhine, which was difficult for the allies to cross."

yeah man were the map at?