Express the number as the ratio of two integers.0.444444 . . .
A. 
B. 
C. 
D. 
Answer: D
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Find the linearization of the function at the given point.
at 
A. 
B. 
C. 
D. 
Solve the problem.Robert has built a mechanical model solar system with three balls representing planets at the ends of rods attached to the center representing the sun. The planets are aligned when he turns on the motor. The innermost planet makes a revolution in 12 seconds, the middle planet makes a revolution in 20 seconds, and the outermost planet makes a revolution in 28 seconds. After how many seconds will the planets be aligned again?
A. 210 seconds B. 630 seconds C. 420 seconds D. 840 seconds
The problem that follows refers to triangle ABC.
?
If 
and 
yd, find a.
?
Apply the rules regarding the use of significant digits after all computations are complete.
?
__________ yd
Fill in the blank(s) with the appropriate word(s).
Find two functions defined implicitly by the given relation.x2 + y2 = 64
A. y = 
+ x or y = - 
- x
B. y = 
or y = - 
C. y = 
or y = 
D. y = 
+ x or y = 
- x