Write the Algebraic Expression Described $180 ^ { \circ }$ If One Angle of a Triangle Measures

question 23

Multiple Choice

Write the algebraic expression described. Simplify if possible.
-The sum of the angles of a triangle is $180 ^ { \circ }$ . If one angle of a triangle measures $x ^ { \circ }$ and a second angle measures $( 9 x + 18 ) ^ { \circ }$ , express the measure of the third angle in terms of $x$ .

• A) \(( 198 - 10 x ) ^ { \circ }\)
• B) \(( 162 - 9 x ) ^ { \circ }\)
• C) \(( 162 - 10 x ) ^ { \circ }\)
• D) \(( 162 + 10 x ) ^ { \circ }\)

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Definitions:

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Biomass Pyramid

A graphical representation showing the relative amount of living organic matter available at each trophic level in an ecosystem.

Anaerobic Respiration

A process by which organisms produce energy without the use of oxygen.

Pyramid of Biomass

A graphical representation showing the total mass of living organisms at each trophic level in an ecosystem.