Factor the trinomial by grouping.7x2 + 17x - 12
A. (x + 3)(7x - 4)
B. (x - 3)(7x + 4)
C. (x - 4)(7x + 3)
D. prime
Answer: A
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Provide an appropriate response.Find the mistake in the following problem: 54 × 53 = 257
What will be an ideal response?
Solve.A machine can fill 1,726 boxes of cereal in 0.2 hour. What is the rate in boxes per hour?
A. 345 boxes/hr B. 5,753 boxes/hr C. 1,726 boxes/hr D. 8,630 boxes/hr
Solve the problem.Use the formula D = 10.0 log (S/S0), where the loudness of a sound in decibels is determined by S, the number of watt/m2 produced by the soundwave, and S0 = 1.00 × 10-12 watt/m2. A certain noise measures 102 decibels. If the intensity is multiplied by 10, how many decibels will the new noise measure? (Round to an appropriate number of significant digits.)
A. 102 decibels B. 103 decibels C. 112 decibels D. 1020 decibels
Simplify.
A. 
B. 
C. 
D. already simplified
E. none of these