Use a double-angle identity to find the exact value of the expression.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Solve.64x2 + 9 = 0
A. 
± i
B. ±
C. ±
+ i
D. ±
i
Mathematics
Determine the most appropriate metric unit to go in the blank. Choose from km, m, cm, mm, L, mL, kg, g, and mg.The bird's wingspan is 21 
.
A. cm B. m C. mm D. mL E. mg
Mathematics
Add or subtract as indicated. Write the answer in lowest terms.
- 
+ 
A. 
B. 
C. 
D. 
Mathematics
Use the table to solve the inequality.5(x - 3) ? 15
A. {x
}
B. {x
}
C. {x
}
D. {x
}
Mathematics