At one high school, students can run the 100-yard dash in a mean of 15.2 seconds with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Rounding to the nearest tenth of a percent as necessary, find the percent of times that are:Less than 17 seconds
A. 84%
B. 97.5%
C. 2.5%
D. 98%
Answer: B
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Provide an appropriate response.For the graph of y = 
, (a) Determine the intercepts.(b)Determine whether the graph is symmetric about the x-axis, the y-axis, the origin, or the line y = x.(c)Sketch the graph. (d) Based on your graph, is y a function of x? If so, state (e) the domain and (f) the range.
What will be an ideal response?
Rewrite the expression as a single trigonometric function using a double-angle identity.cos24? - sin24?
A. 2 sin 4?
B. cos 8?
C. 
sin 16?
D. cos 4?
Convert the equation to the standard form for a hyperbola by completing the square on x and y.4y2 - 25x2 - 16y - 100x - 184 = 0
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 