Find the radian measure of the angle ?.The length of the circular arc associated with ? is 21 on a circle of radius 
.
A. 
B. 21
C. 63
D. 28
Answer: D
Mathematics
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Solve.Simplify: 
A. 25
B. 25
C. 5
D. 25
Mathematics
Solve using the addition principle.2 = b - 18
A. 20 B. 16 C. -16 D. -20
Mathematics
Find an equivalent equation in rectangular coordinates.r = 
A. x2 = 10y - 25 B. x2 = 25 - 10y C. y2 = 10x - 25 D. y2 = 25 - 10x
Mathematics
Solve for the specified variable.
+ 
= 
for c
A. a + b
B. 
C. 
D. ab(a + b)
Mathematics