28=2*2*7=2²*7;
46=2*23=>the greatest common factor is 2
Answer:
7
Step-by-step explanation:
no explanation needed the answer is in the question
Answer:
7.29
Step-by-step explanation:
S = a*((1 - r^(n+1))/(1-r))
S = 1*((1 - 2^(7+1))/(1-2))
S = 1*((1 - 2^8)/(1-2))
S = 1*((1 - 256)/(1-2))
S = 1*((-255)/(-1))
S = 255
So 1+2+4+8+...+128 = 255