Question

Which expression is equivalent to 83 ⋅ 8−7? (1 point)

a
fraction: 1 over 8 to the power 10

b
1 over 8 to the power 4

c
810

d
84

Answer 1

$8^{3} \cdot 8^{-7} =8^{-4}=\boxed{\frac{1}{8^4}}$