Let the scores for a test be normally distributed. The test has a mean of 400 and a standard deviation of 80. Use this information to find the requested value.Find the test score that is 1.5 standard deviations below the mean.
A. 280
B. 160
C. 320
D. 520
Answer: A
Mathematics
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Find the vertex of the parabola and determine if it is a maximum or minimum. y = 2x2 + 12x + 20
A. (-3, 2); minimum B. (-3, -2); minimum C. (-3, 2); maximum D. (-3, -2); maximum
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Solve the proportion equation.
= 
A. 6.3 B. 0.19 C. 1.58 D. 15.75
Mathematics
Solve.Kannanaski Rapids drops 67 ft over a horizontal distance of 910 ft. Find the slope of Kannanaski Rapids. Round your answer as appropriate.
A. -67 B. -0.001 C. -0.074 D. -13.6
Mathematics
What is the sine of angle é?
a. c/b
b. b/c
c. a/c
d. a/b
e. b/a
Mathematics