Find the exact value of the expression.sin 20° cos 100° + cos 20° sin 100°
A. 
B. 
C. - 
D. - 
Answer: B
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Provide an appropriate response.Derive a formula for the area of a circumscribed regular n-sided polygon for a circle of radius r.
What will be an ideal response?
Solve. Write the answer as a mixed number in simplest form.Ellen is knitting a scarf with one 7
-inch blue stripe, one 3
-inch green stripe, and one 1
-inch white stripe. How wide is the scarf?
A. 12
in.
B. 2
in.
C. 
in.
D. 
in.
Which of the following DOES NOT reflect an example of the impact a new entrant might have on an industry?
A. A new entrant might take away market share from existing competitors. B. A new entrant might increase production capacity in the industry so that overcapacity results. C. A new entrant might force existing firms to learn new ways of doing things. D. A new entrant might decrease competitive rivalry.
Write an equation for the line described. Write the equation in the form specified.perpendicular to -8x + 7y = 8, through (-8, 8); slope-intercept form
A. y = - 
x + 1
B. y = - 
x - 
C. y = - 
x - 
D. y = 
x + 1