Estimate the sum or difference by rounding each number to the nearest ten.
A. 840
B. 830
C. 800
D. 837
Answer: B
Mathematics
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Use = or ? for ? to write a true sentence.
? 
A. = B. ?
Mathematics
Find the exact value under the given conditions.cos ? = 
, 0 < ? < 
; sin ? = - 
, - 
< ? < 0Find tan(? + ?).
A. 
B. 
C. 
D. 
Mathematics
What is the corner point?
In the graph of 
A) (0, 0)
B) (0, -1)
C) (0, 1)
D) (-1, 0)
E) (1, 0)
Mathematics
Determine whether the expression represents a difference of two squares.x2 - 47
A. Yes B. No
Mathematics