Factor by grouping.wy + y + w + 1
A. (w + 1)(y + w)
B. (wy + 1)(y + w)
C. (w + 1)(y + 1)
D. (wy + w)(y + 1)
Answer: C
Mathematics
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Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Mathematics
Find the mode or modes.20, 28, 46, 28, 49, 28, 49
A. 28 B. 46 C. 35.4 D. 49
Mathematics
Add or subtract as indicated.(-3mn + 9mn2 - 4m2n2) + 
A. -13mn + 12m2n + 4m2n2 B. 7mn + 9mn2 + 3m2n + 4m2n2 C. 4m2n2 + 3m2n + 9mn2 - 13mn D. 3m2n2
Mathematics
Complete.63 ft = 
yd
A. 756
B. 5
C. 21
D. 189
Mathematics