The perimeter 
of a rectangle with length 
and width 
is given by the formula
. Solve this formula for 
.If the perimeter of a certain
rectangle is 59.42 meters and its length is 18.75 meters, find its width.
A. 
B. 
C. 
D. 
E. 
Answer: D
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Find the length.
A.
1 inches
B.
inches
C.
inches
D.
inches
Solve the problem.An arch for a bridge over a highway is in the form of a semi-ellipse. The top of the arch is 35 feet above ground. What should the span of the bridge be, rounded to the nearest hundredth of a foot, if the height 30 feet from the center is to be 16 feet above ground?
A. 131.25 ft B. 33.73 ft C. 67.46 ft D. 62.13 ft
Solve the problem.A coil of wire rotating in a magnetic field induces a voltage given by e = 20 sin 
,where t is time in seconds. Find the smallest positive time to produce a voltage of 10
.
A. 2.8 sec B. 3 sec C. 2.8? sec D. 3? sec
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such that 
, 
, and
?
A. 
B. 
C. 
D. 
E. 