Add or subtract, as indicated.0.91 + (-4.047)
A. -4.857
B. -4.957
C. 3.683
D. -3.137
Answer: D
Mathematics
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Express the number in standard notation.1.455 × 10-5
A. 0.00001455 B. 0.000001455 C. 0.0001455 D. -145,500
Mathematics
Solve for the variable.4 + x = -30
A. -34 B. 26 C. -26 D. 34
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Determine two functions, designated by y1 and y2, such that their union will give the graph of the given equation.x2 + 8x + y2 + 4y = 45
A. y1 = -2 + 
and y2 = -2 - 
B. y1 = -2 - x + 
and y2 = -2 - x + 
C. y1 = -2 + 
and y2 = -2 - 
D. y1 = 2 + 
and y2 = 2 - 
Mathematics