Write each whole number in expanded form.30,900
A. 3000 + 900
B. 3,900,000
C. 30,000 + 9000
D. 30,000 + 900
Answer: D
Mathematics
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Graph the polar equation.r = 
A. 
B. 
C. 
D. 
Mathematics
Write an equation of the line through the given point with the given slope. Write the equation in slope-intercept form.(0, 4); m = 
A. y = 
x + 4
B. y = - 
x + 4
C. y = - 
x + 
D. y = 
x - 
Mathematics
Provide an appropriate response.Find DE. Round to four significant digits.
A. 32.70 B. 12.05 C. 65.53 D. 100.4
Mathematics
Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Mathematics