Convert. Round to the nearest tenth unless otherwise indicated.A carpenter used lag bolts with 
-inch heads. Convert to millimeters.
A. 1.3 mm
B. 2.0 mm
C. 12.7 mm
D. 5.0 mm
Answer: C
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Select the smaller of the two given numbers.-19, -14
A. -14 B. -19
Factor.9x4 + 24x2 + 16
A. (3x2 + 4)(3x2 + 4) B. (3x2 + 16)(3x2 + 1) C. (9x2 + 4)(x2 + 4) D. (3x2 - 4)(3x2 - 4)
Solve the equation.log (3 + x) - log (x - 5) = log 3
A. {-9}
B. 
C. {9}
D. ?
Solve the problem.Atomic nuclei consist of protons and neutrons. The number of protons and neutrons in a particular nucleus must fall into a well-defined range of values in order for the nucleus to be stable, else it will be unstable and will disintegrate by radioactive decay. The figure below shows this so-called "region of stability" for nuclei having proton numbers between 10 and 60. Determine a system of linear inequalities that describe the region of stability. Let x represent the number of protons and y represent the number of neutrons.
A. y ? x - 5
y ? 
x + 4
B. y ? x - 5
y ? 
x + 4
C. y ? x - 5
y ? 
x + 4
D. y ? x - 5
y ? 
x + 4