Simplify the expression. Assume that all variables are positive when they appear.
A. 147x
B. 7
C. 7x
D. 3x2
Answer: C
Mathematics
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For the given rectangular equation, write an equivalent polar equation.x2 + y2 - 4x = 0
A. r = 4 cos ? B. r sin2? = 4 cos ? C. r = 4 sin ? D. r cos2? = 4 sin ?
Mathematics
Perform the indicated operation. Write the answer in the form a + bi.4(cos 45° + i sin 45°) ? 6(cos 225° + i sin 225°)
A. -24 B. 24 C. -24i D. 24i
Mathematics
Simplify.
A. 1024
B. 16
C. 4
D. 4
Mathematics
Use a calculator to find the value of the expression rounded to two decimal places.sin-1 (0.4)
A. 1.16 B. 23.58 C. 66.42 D. 0.41
Mathematics