Rationalize the denominator and simplify. Assume that all variables represent positive real numbers.
A. 11 + 2
B. 11 - 2
C. -11 - 2
D. 2
- 11
Answer: D
Mathematics
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Perform the indicated operations. Leave the result in polar form.[3(cos 40° + j sin 40°)]4
A. 81(cos 404° + j sin 404°) B. 7(cos 160° + j sin 160°) C. 12(cos 160° + j sin 160°) D. 81(cos 160° + j sin 160°)
Mathematics
Write the sentence as an equation or inequality. Use x to represent any unknown number.The sum of 14 and a number is 67.
A. 67 + 14 = x B. 14 + x = 67 C. 14 = 67 + x D. 14 - x = 67
Mathematics
Find the center of the hyperbola.y2 - x2 - 8y + 8x - 25 = 0
A. (-1, 4) B. (4, -1) C. (-4, -4) D. (4, 4)
Mathematics
Multiply and simplify.
? 
A. - 
B. 
C. 
D. -12
Mathematics