It is true. Guptas did figure out the earth was round by observing lunar eclipses.
Answer:
Step-by-step explanation:
a1 = 7
a2 = 4(7) = 28
a3 = 4(28) = 112
a4 = 4(112) = 448
a5 = 4(448) = 1792
a6 = 4(1792) = 7168
87 / 114 = x / 9918....87 people to 114 = x people to 9918
cross multiply
(114)9x) = (87)(9918)
114x = 862866
x = 862866/114
x = 7569 <===
Yes they are the same because when the negative is distributed into (an+c), the plus sign becomes a negative.
A) -9-7n+16n=-9+n(16-7)=-9+9n=9n-9
B) 9(n-9)=9×n-9×9=9n-81
C) n-9+8n=n(1+8)-9=9n-9
D) 9n-9
So the answer is B)
