Solve.If an earthquake measured  on the Richter scale, what was the approximate intensity of the earthquake in terms of I0? The magnitude on the Richter scale of an earthquake of intensity I is 

A. 330 ? I0
B. 630,000 ? I0
C. 500,000 ? I0
D. 63,000 ? I0


Answer: B

Mathematics

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Classify the system as either consistent or inconsistent.

A. Inconsistent B. Consistent

Mathematics

Write the reciprocal of the number.-13

A.
B. does not exist
C. 13
D.

Mathematics

Solve the system of equations. If the system has no solution, say that it is inconsistent.

A. x = 0, y = 0, z = -4; (0, 0, -4) B. x = 0, y = -4, z = 0; (0, -4, 0) C. x = 2, y = -4, z = 0; (2, -4, 0) D. inconsistent

Mathematics

Find all of the real zeros of the function. Give exact values whenever possible. Identify each zero as rational or irrational.f(x) = x3 + 6x2 - 22x - 48

A. -8 (rational), 8 (rational), -6 (rational)
B. -8 (rational),  (irrational), and - (irrational)
C. -8 (rational), 1 +  (irrational), and 1 -  (irrational)
D. -8 (rational), 2 +  (irrational), and 2 -  (irrational)

Mathematics