Find the sum or difference. Write the answer in standard form.7
- (5
+ i) + 3i - (-6
+ 3i)
A. 8
+ i
B. 8
- i
C. 8 - 5i
D. -8 - 5i
Answer: B
Mathematics
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Write the expression in terms of sines and/or cosines, and then simplify.sin2 x + sin x - 1 + cos2 x
A. 
B. sin x
C. 
D. 
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Solve the problem.Richard's team wants to plant 1,112 trees in 8 months. How many trees per month do they need to plant?
A. 149 trees B. 278 trees C. 139 trees D. 147 trees
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Find the simple interest. Round your answer to the nearest cent.Principal = $300Rate = 10%Time in years = 2
A. $1500.00 B. $15.00 C. $60.00 D. $6.00
Mathematics
Solve and graph. Write the answer in set-builder notation.a + 5 < 3
A. {a
a < -2}
B. {a
a ? -2}
C. {a
a ? -2}
D. {a
a > -2}
Mathematics