The slope of the line containing P(-3, -5) and R(-10, -6) is
(a) 11/13.
(b) 7.
(c) 1/7.
(d) 13/11.
(e) None of these is correct.
(c) 1/7.
Mathematics
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Solve the problem.Data for the amount of sun-induced expansion (in mm) of a steel I-beam were collected. The measurements are 7.82, 7.83, 7.70, 7.81, and 7.75. Find the standard deviation and variance for the data. Round the results to the nearest thousandth.
A. s = 0.045, v = 0.002 B. s = 0.111, v = 0.012 C. s = 0.139, v = 0.019 D. s = 0.002, v = 0.001
Mathematics
Find f(x + h) - f(x).f(x) = 6x2 - 6x - 5
A. 6xh - 6h2 - 6h B. 6xh + 6h2 - 6h C. 12xh + 6h2 - 6h D. 12xh + 6h2 + 6h
Mathematics
Find the exact value of the expression.cos 25° cos 35° - sin 25° sin 35°
A. 
B. 
C. 
D. 
Mathematics
What number should be added to complete the square of the expression?x2 - 
x
A. 
B. - 
C. - 
D. 
Mathematics