Solve the problem. Round to the nearest hundredth, if necessary.The average middle-distance runner at a local high school runs the mile in 5.5 minutes, with a standard deviation of 0.4 minute. Find the percentage of runners that will run the mile in less than 4.8 minutes.
A. 95.99%
B. 4.01%
C. 4.46%
D. 94.54%
Answer: B
Mathematics
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Solve the formula for the specified variable.I = 
for n
A. n = 
B. n = IR(Ir - E)
C. n = 
D. n = 
Mathematics
Express the number in standard notation.7.0982 × 10-7
A. 0.0000070982 B. 0.00000070982 C. -709,820,000 D. 0.000000070982
Mathematics
Solve the problem.The focal length f of a lens with index of refraction n is 
= (n - 1)
where R1and R2 are the radii of curvature of the front and back surfaces of the lens. Express f as a rational expression.
A. f = 
B. f = 
C. f = 
D. f = 
Mathematics
Fill in the blank with one of the words or phrases listed below.
A(n)
is a part of a line with one end point and extends indefinitely in one direction.
A. transversal B. line segment C. line D. ray
Mathematics