Simplify the Numerical Expression $\left( \frac { 2 ^ { - 1 } } { 7 ^ { - 2 } } \right) ^ { - 1 }$

question 255

Short Answer

Simplify the numerical expression. $\left( \frac { 2 ^ { - 1 } } { 7 ^ { - 2 } } \right) ^ { - 1 }$ Please enter your answer as a fraction.

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Definitions:

Ethmoid

The ethmoid bone is a spongy, cuboid-shaped bone situated between the eyes and forming part of the cranial base and the nasal cavity walls.

Lacrimal

Related to tears or the glands that produce tears.

Superior Articular Facet

The upper part of a vertebra that connects with an adjacent vertebra, contributing to the spine's flexibility and movement.

Posterior Sacral Foramina

Posterior sacral foramina are openings on the dorsal side of the sacrum that allow for the passage of nerves and blood vessels to the pelvic organs and lower limbs.