At one high school, students can run the 100-yard dash in an average of 15.2 seconds with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Find the percent of times that are:Less than 17 seconds
A. 98%
B. 97.5%
C. 84%
D. 2.5%
Answer: B
Mathematics
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Find the volume of the figure.Use 3.14 for ?. Round your answer to the nearest whole number.
height = 66 mradius = 21 m
A. 1451 m3 B. 95,745 m3 C. 30,464 m3 D. 91,393 m3
Mathematics
Factor, if possible.b6 - 8
A. (b2 - 2)(b4 + 2b2 + 4) B. (b2 - 2)(b4 - 2b2 + 4) C. (b2 + 2)(b4 - 2b2 + 4) D. cannot be factored
Mathematics
Identify the conic section represented by the equation.7x2 + 7y2 - 28x + 64y - 156 = 0
A. hyperbola B. parabola C. circle D. ellipse
Mathematics
Determine whether the basic feasible solution corresponding to the given tableau is optimal. x1 x2 x3 x4 M
A. Optimal B. Not optimal
Mathematics