Distribute and simplify.
x-2(15x4/3 - 18x-1/2)
A. 5x2/3 - 6x5/2
B. 
- 
C. 
+ 
D. 5x2/3 + 6x5/2
Answer: B
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Add or subtract.
- 
A. 2b B. 6a C. 4b D. 0
The Richter scale converts seismographic readings into numbers for measuring the magnitude of an earthquake according to this function M(x) = log 
, where xo = 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?
A. 3.8808 B. 0.20281 C. 2.0281 D. 0.38808
Determine what signs on values of x and y would make the statement true. Assume that x and y are not 0.
< 0
A. x and y have different signs. B. x and y must be negative. C. y must be negative. D. x must be negative.
Find the magnitude or direction angle of the given vector as indicated.u = 8[(cos 30°)i + (sin 30°)j]; Find the magnitude.
A. 8
B. 4
C. 16
D. 2