Answer:
4
Step-by-step explanation:
Using the nth term formula
a₁ = 2(1) - 5 = 2 - 5 = - 3
a₆ = 2(6) - 5 = 12 - 5 = 7
Then
a₁ + a₆ = - 3 + 7 = 4
Answer:
Divide 2 by 6
Step-by-step explanation:
nce BE=EC, BC = 2BE. According the principle of proportionality of triangle,BE/DE=BC/AC.
This can be re-written as:
BE/DE= 2BE/ AC
DE= AC * (BE/2BE)
DE= AC * (0.5)
Since we do not know the value of AC from statement (2) therefore not sufficient. However substituting the value of AC from statement (1), we get DE= 14 * 0.5 = 7
Therefore answer is C, both statements together are sufficient but neither alone is sufficient.
most likely A,C,D,E 70% sure