Find the Acute Angle, in Degrees, Between the Lines $30 ^ { \circ }$

question 178

Multiple Choice

Find the acute angle, in degrees, between the lines.
-3x - y = 16 and 2x + y = -13

• A) \(30 ^ { \circ }\)
• B) \(75 ^ { \circ }\)
• C) \(45 ^ { \circ }\)
• D) \(60 ^ { \circ }\)

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Definitions:

Jury Test

A method used in marketing research where a product, ad, or campaign is evaluated by a panel of judges or potential consumers for feedback.

Aided Recall

A market research technique where respondents are prompted with specific cues or aids to help them remember certain information or brands.

Starch Test

A chemical method used to detect the presence of starch in a substance, typically involving iodine solution, which turns blue-black in the presence of starch.

Prompted Response Test

A research method used to evaluate the effectiveness of advertising or marketing material, where participants are prompted with specific cues to recall and respond to the information.