Perform the indicated operation or operations.- 
? 2
A. - 
B. - 
C. 
D. 
Answer: A
Mathematics
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Determine ? in decimal degrees. Round results to an appropriate number of significant digits.tan ? = 0.545
A. 8.0° B. 8° C. 29° D. 29.0°
Mathematics
Verify the identity.
= 
What will be an ideal response?
Mathematics
Perform the indicated operation and write the answer in the form 
where a and b are real numbers.(4 + 8i)(9 - 4i)
A. 68 - 56i B. 4 + 88i C. 68 + 56i D. -32i2 + 56i + 36
Mathematics
Write the decimal point in the correct location. $3.50 × 0.394 = 137900
A. $137.900 B. $1.37900 C. $13.7900 D. $137,900.
Mathematics