X+0=18
2x+y=19
(-2)x+(-2)0=(-2)18
2x+y=19
0+y= -17
2x+ (-17)=19
2x=36
y=-17
x=18
Answer:
The density is the same because both cubes are composed of the same element Iron(Fe).
4.43 hectometers is the height for the building
3 cm/h easy peasy
Step-by-step explanation:
- 12 cm in 4 hrs
- For 1 cm : 12/4 = 3 cm
