If possible, factor the polynomial completely. If a polynomial cannot be factored, state that it is prime.21x2 - 91x - 70
A. 21x2 - 91x - 70
B. 7(3x + 2)(x - 5)
C. 7(3x - 2)(x + 5)
D. (21x + 14)(x - 5)
Answer: B
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Complete.395 mm = 
cm
A. 3,950 B. 39,500 C. 4 D. 39.5
Solve the problem.Use the formula R = log
, where the magnitude of an earthquake on the Richter scale is based on I, the measurement of a seismic wave, and I0, the measurement of a seismic wave of a level zero earthquake with the same epicenter. An earthquake was recorded which was 2,511,886 times more powerful than a reference level zero earthquake. What is the magnitude of this earthquake? (Round to the nearest tenth.)
A. 5.4 B. 6.4 C. 0.6 D. 14.7
For the square, answer "yes" or "no" to indicate whether each of the following properties are satisfied:a. opposite sides parallelb. opposite sides have equal lengthc. opposite angles have equal measured. interior angles are right anglese. diagonals have equal length
A. a-c yes; d-e no B. all yes C. a, b, c, e yes; d no D. a,c yes; b,d,e no E. a-b yes; c-e no
Multiply.
A. 9144 B. 9152 C. 1044 D. 9136