It is true. Guptas did figure out the earth was round by observing lunar eclipses.
Answer:
9-49
a= 2r+ 7
b= 2.5x + 16
c= 3r-2x-8.8
Step-by-step explanation:
Answer:
189
Step-by-step explanation:
bc that's just what I think
Answer:

Step-by-step explanation:
