Solve the problem.
What was the previous day's closing price for ABD?
A. $22.52
B. $22.16
C. $21.80
D. $9.13
Answer: A
Mathematics
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Use scientific notation to perform the following operations. Leave your answer in scientific notation.(20 × 10-2) ÷ (5 × 109)
A. 4.0 × 107 B. 8.0 × 10-11 C. 4.0 × 10-11 D. 8.0 × 107
Mathematics
Provide an appropriate response.Let A = 
and let B = 
.Does the matrix A + B have an inverse?
A. Yes B. No
Mathematics
Solve the equation using the Addition Property of Equality. Be sure to check your solution.t - 5 = 14
A. {19} B. {9} C. {-9} D. {-19}
Mathematics
Solve the mixture problem.A merchant has coffee worth $4 a pound that she wishes to mix with 60 pounds of coffee worth $7 a pound to get a mixture worth $5 a pound. How many pounds of the $4 coffee should be used?
A. 60 lb B. 90 lb C. 120 lb D. 180 lb
Mathematics