Identify the group of terms as like or unlike.9v6, -11v6
A. Like
B. Unlike
Answer: A
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Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation.r = 4 sin ?
A. (x - 2)2 + y2 = 4; circle, radius 2,
center at (2, 0) in rectangular
coordinates
B. (x + 2)2 + y2 = 4; circle, radius 2,
center at (-2, 0) in rectangular
coordinates
C. x2 + (y + 2)2 = 4; circle, radius 2,
center at (0, -2) in rectangular
coordinates
D. x2 + (y - 2)2 = 4; circle, radius 2,
center at (0, 2) in rectangular
coordinates
The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where x0 = 10-3.What is the magnitude of an earthquake whose seismographic reading is 7.6 millimeters at a distance of 100 kilometers from its epicenter? Round the answer to the nearest tenth.
A. 880.8 B. 3.9 C. 2.9 D. 2.6
Use the properties of real numbers to simplify the expression.(3 - 5x) + (8x + 7)
A. 3x + 10 B. 3x + 4 C. 8x + 10 D. -7x + 10
? is a central angle that cuts off an arc of length s. Find the radius of the circle if ?= 9°, 
m .
?
A. 9 m B. 10 m C. 11.92 m D. 12 m E. 10.26 m