Estimate the sum or difference by first rounding to the nearest ten.94
A. 150
B. 155
C. 200
D. 160
Answer: A
Mathematics
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Write the sum without sigma notation and evaluate it.
A. 2 sin ? + 2 sin 
+ 2 sin 
+ 2 sin 
= 6 + 
B. 2 sin ? + 2 sin 
= 
C. 2 sin ? + 2 sin 
+ 2 sin 
+ 2 sin 
= 2 + 
+ 
D. 2 sin ? + 2 sin 
+ 2 sin 
+ 2 sin 
= 1 + 
Mathematics
Draw a sketch to represent the vector. Refer to the vectors pictured here. 
b - c
A. 
B. 
Mathematics
Multiply the real numbers. Write any improper fraction as a whole or mixed number where appropriate.-3
? 7
A. -147
B. -21
C. -10
D. -26
Mathematics
Simplify.22 + 
2
A. 
B. 
C. 
D. 
Mathematics