1.

Find the value of: a.) 2^-3×(-7)-3​

Answer»

Answer:

1/128

Step-by-step explanation:

2^-3 × (-7)^(-3) = 1/2^3 × 1/-7^3

                       = 1/(2×2×2) × 1/(-7×-7×-7)

                       = 1/8 × 1/-343

                       = 1/2744



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