Solve the system by the method of substitution.
?

?

A.
B.
C.
D. No solution
E.


Answer: D

Mathematics

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Find the probability.One digit from the number 4,868,338 is written on each of seven cards. What is the probability of drawing a card that shows 4, 8, or 6?

A.
B.
C.
D.

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A. 4
B. 1
C.
D.

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Write a general formula to describe the variation.The square of G varies directly with the cube of x and inversely with the square of y;   when  and 

A. G2 =  
B. G2 =  (x3 + y2)
C. G2 =  
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Mathematics