Multiply
--9(-10)
A) 90
B) -19
C) -90
D) $\frac { 9 } { 10 }$

question 160

Multiple Choice

Multiply.
--9(-10)

• A) 90
• B) -19
• C) -90
• D) \(\frac { 9 } { 10 }\)

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Definitions:

Hawthorne Studies

A series of experiments conducted in the 1920s and 1930s that concluded social and psychological factors affect productivity and work conditions.