Write using exponential notation.20 ? 20 ? 20 ? 20

A. 204
B. 201
C. 420
D. 4 ? 20

Answer: A

Mathematics

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Clear fractions then solve by substitution. x + y =  + 2y 5x - 4 +  = -3 + 6x

A.
B. ?
C.
D.

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Mathematics

Provide an appropriate response.Exactly how many of the following equations define y as a function of x?(a)y = 7 - x(b)y2 = 4x(c)y = (d)x2 = y + 4

A. none B. one C. two D. three E. all

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Mathematics

Find the circumference of the circle whose radius or diameter is given. Use  or  as indicated. d = 91 km. Use ? ? 3.14.

A. C ? 142.87 km B. C ? 571.48 km C. C ? 26,002.34 km D. C ? 285.74 km

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Mathematics

Subtract.-147 - (-87 )

A. 60 B. -234 C. 234 D. -60

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Mathematics