A geometric sequence is given. Find the common ratio and write out the first four terms.{dn} = 
A. r = 5; d1 = 
, d2 = 
, d3 = 
, d4 = 
B. r = 
; d1 = 
, d2 = 
, d3 = 
, d4 = 
C. r = 5; d1 = 
, d2 = 
, d3 = 
, d4 = 
D. r = 
; d1 = 
, d2 = 
, d3 = 
, d4 = 
Answer: A
Mathematics
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Find the exact circular function value.cos 
A. 
B. - 
C. - 
D. - 
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Solve the problem.Under typical conditions, 1
feet of snow will melt into 2 inches of water. Into how many inches of water will 1
feet of snow melt?
A. 2
in.
B. 2
in.
C. 3
in.
D. 2
in.
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On the real number line, label the points with the given coordinates.-1.75, 1, 3, 5.25 
A. 
B. 
C. 
D. 
Mathematics
Set up a system of equations, and use it to balance the chemical equation for the given reaction.Fe3O4 and H2 react to produce Fe and H2O.
A. Fe3O4 + 4H2 ? 2Fe + 3H2O B. Fe3O4 + 2H2 ? 3Fe + 2H2O C. Fe3O4 + 2H2 ? 3Fe + 4H2O D. Fe3O4 + 4H2 ? 3Fe + 4H2O
Mathematics