Find an equivalent equation in polar coordinates.x2 + y2 - 4x = 0
A. r sin2? = 4 cos ?
B. r cos2? = 4 sin ?
C. r = 4 cos ?
D. r = 4 sin ?
Answer: C
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Use the fact that a solid with a volume of 1000 cubic centimeters has a capacity of 1 liter, along with dimensional analysis, to convert the given unit to the unit indicated.30,000 cm3 to L
A. 300 L B. 3 L C. 30,000 L D. 30 L
By calculating an appropriate number of terms, determine if the series converges or diverges. If it converges, find the limit L and the smallest integer N such that 
for 
otherwise indicate divergence.an = cos n
A. L = 1, N = 394 B. diverges C. L = 0, N = 394 D. L = 0, N = 237
Referring to the figure below, let E1 = 10 V, E2 = 20 V, R1 = 4.7 Kê, R2 = 1 Kê, and R3 = 3.3 Kê. Solve for I1 and I2.
a. I1 = -3.15 mA I2 = 9.18 mA b. I1 = -3.35 mA I2 = 7.69 mA c. I1 = 4.02 mA I2 = -7.69 mA d. I1 = 2.67 mA I2 = 5.27 mA e. I1 = 3.15 mA I2 = 7.69 mA
Solve the problem.A plane flying a straight course observes a mountain at a bearing of 31.7° to the right of its course. At that time the plane is 8 kilometers from the mountain. A short time later, the bearing to the mountain becomes 41.7°. Find the distance between the plane and the mountain, to the nearest tenth of a kilometer, when the second bearing was taken.
A. 6.3 km B. 11.4 km C. 4.2 km D. 10.1 km