Determine the Truth Value for Each Simple Statement

question 105

True/False

Determine the truth value for each simple statement. Then, using the truth values, give the truth value of the compound statement.
-9 - 2 = 7 if and only if 10 + 4 = 15.

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Definitions:

Slate

A compact, fine-grained, low-grade metamorphic rock that possesses slaty cleavage.

Hornfels

Hornfels is a metamorphic rock formed by the contact between mudstone or other clay-rich rock and a hot igneous body, characterized by its hardness and fine grain.

Greenstone

Metamorphosed basalt or other mafic volcanic rock, typically found in ancient geological formations.

Banded Gneiss

A metamorphic rock characterized by alternating light and dark mineral bands, formed under high-temperature and high-pressure conditions.