Respuesta :

mathstudent55

Answer:

127

Step-by-step explanation:

n = 7

[tex] 2^n - 1 = [/tex]

[tex] = 2^7 - 1 [/tex]

[tex] = 128 - 1 [/tex]

[tex] = 127 [/tex]

Sarah06109

Answer:

127

Step-by-step explanation:

We are given the expression:

(2^n)-1

We also know that n=7. Therefore, we can substitute 7 in for n.

(2^7)-1

Evaluate the exponent first. 2^7 is equal to multiplying 2, 7 times.

2^7=2*2*2*2*2*2*2=128

2^7=128

128-1

Subtract 1 from 128

127

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