The lengths of a certain species of fish were found to be normally distributed. The mean length is 73 cm with a standard deviation of 7 cm. In a school of 480 of these fish, about how many would be longer than 57 cm? Use the Empirical Rule.
a. 22
b. 476
c. 58
d. 469
d. 469
Mathematics
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Determine whether the graphs of the equations are parallel lines, perpendicular lines, or neither.y = 2x - 38x + 4y = 8
A. Perpendicular B. Parallel C. Neither
Mathematics
Find the exact value of the expression.
A. 
B. 
C. - 
D. - 
Mathematics
Write the ratio as a fraction in lowest terms. Be sure to make all necessary conversions.9 feet to 50 inches
A. 
B. 
C. 
D. 
Mathematics
Write in terms of the cofunction of a complementary angle.sin 85°
A. cos 95° B. csc 5° C. cos 5° D. csc 95°
Mathematics