Subtract and simplify. Write the answer as a mixed number as needed.12
- 12
A. 1
B. 24
C. 
D. 
Answer: C
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Solve the problem. Round to the nearest tenth of a percent unless otherwise noted. The graph below shows the number of internet host sites for five consecutive years. Find the percent increase in host sites from 2009 to 2010. Round to the nearest percent.
20082009201020112012Year
A. 67% B. 0.6700% C. 1.0200% D. 102%
Solve the problem.Two voltages, V1 = 80 sin(110?t) and 
are added in a circuit to produce the sum 
Graph V in 
by 
and use the graph to estimate values for a and k so that 
Round k to the nearest
ten-thousandth, if necessary. A. a = 170; k = 373.5108 B. a = 170; k = 169.317 C. a = 170; k = 1.0808 D. a = 17; k = 1.0808
Solve the problem.The volume of water added to a circular drum of radius r is given by 
, where 
is volume in cu ft and t is time in sec. Find the depth of water in a drum of radius 9 ft after adding water for 21 sec. (Round result to one decimal place.)
A. 0.4 ft B. 0.6 ft C. 0.8 ft D. 1.3 ft
The problem that follows refers to triangle ABC.
?
If 
and 
cm, find C and a.
?
Apply the rules regarding the use of significant digits after all computations are complete.
?
__________°
?
__________ cm
What will be an ideal response?