Give three kinds of notation for the percent.12.5%
A. 
; 12.5 × 
; 12.5 × 0.1
B. 
; 12.5 × 
; 12.5 × 0.001
C. 
; 12.5 × 
; 12.5 × 0.01
D. 
; 12 × 
; 12 × 0.01
Answer: C
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Convert the measurement as indicated.28 yd 1 ft = 
ft
A. 31 ft B. 85 ft C. 57 ft D. 29 ft
Solve the equation by completing the square.0.5m2 + 1.2m + 0.5 = 0
A. 
B. 
C. 
D. 
The geologist C. F. Richter defined the magnitude of an earthquake to be 
where I is the intensity of the quake (measured by the amplitude of a seismograph 100 km from the epicenter) and S is the intensity of a ”standard” earthquake (where the amplitude is only 1 micron = 
cm). The 1989 Loma Prieta earthquake that shook San Francisco had a magnitude of 7.9 on the Richter scale. The 1906 San Francisco earthquake was 12times as intense. What was its magnitude on the Richter scale?
a. 12 b. 11 c. 9 d. 14 e. 13
Find the reference angle for the given angle.
A. 2?
B. 
C. 
D. - 