Solve the system of equations using substitution. Note that the system may be inconsistent or consistent with dependent equations. 

A. (2, 1)
B. (1, -2)
C. (1, 2)
D. (1, 4)


Answer: A

Mathematics

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Find the surface area of the circular solid. Unless otherwise specified, use 3.14 for ? and round your answer to the nearest tenth.A right circular cylinder with r = 5 cm, h = 7 cm

A. 376.8 cm2 B. 266.9 cm2 C. 549.5 cm2 D. 188.4 cm2

Mathematics

Write as a decimal. %

A. 0.5175 B. 0.5125 C. 5.1025 D. 0.0535

Mathematics

Determine the number of real-number solutions of the equation from the given graph.-2x2 - x - 1 = 0, given the graph of y = -2x2 - x - 1

A. 2 B. 3 C. 1 D. 0

Mathematics

Find an equation for the hyperbola described.Vertices (, -3) and (- , -3); asymptotes 

A.  -  = 1
B.  -  = 1
C.  -  = 1
D.  -  = 1

Mathematics