kohjiaxin0
kohjiaxin0
14-10-2021
Mathematics
contestada
A+B = ？
A.257
B.267
C.524
D.526
Respuesta :
evgeniylevi
evgeniylevi
14-10-2021
Answer:
C. 524.
Step-by-step explanation:
a=0.5(251+263)=257;
b=0.5*(263+271)=267;
a+b=257+267=524.
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