Solve the equation.2x2 = 3x + 5
A. x = 
, x = 1
B. x = 
, x = -1
C. x = 
, x = -1
D. x = 
, x = 0
Answer: C
Mathematics
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. (72)-1
A. 
B. - 
C. -14
D. -49
Mathematics
Find the solution set of the system.
?
?
A. ?
B. ?
C. ?
D. ?
Mathematics
Solve the equation by completing the square.x2 + 8x = 7
A. {4 + 
}
B. {-4 - 
, -4 + 
}
C. {-4 - 1
, -4 + 1
}
D. {-1 - 
, -1 + 
}
Mathematics
Solve the problem.A person who is 3 feet tall is standing on the beach and looks out onto the ocean. Suddenly, a ship appears on the horizon. How far is the ship from the shore? Use the fact that the radius of the Earth is 3960 miles and 1 mile = 5280 feet. Round to the nearest tenth of a mile.
A. 5600.3 mi B. 3 mi C. 154.2 mi D. 2.1 mi
Mathematics