A time study was conducted by the production manager of Universal Instruments to determine how much time it took an assembly worker to complete a certain task during the assembly of its Galaxy home computers. Results of the study indicated that 25% of the workers were able to complete the task in less than 3 minutes, 55% of the workers were able to complete the task in 4 minutes or less, and 15% of the workers required more than 5 minutes to complete the task.
If an assembly-line worker is selected at random from this group, what is the probability that the time taken for the worker to complete the task will be between 3 and 4 min (inclusive)?
a. 0.30
b. 0.10
c. 0.75
d 0.60
a. 0.30
Mathematics
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Solve for the angle ?, where 0 ? ? ? 2?sin2? = 
A. ? = 0, ?, 2?
B. ? = 
, 
, 
, 
C. ? = 
, 
, 
, 
D. ? = 
, 
, 
, 
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. - 
D. - 
Mathematics
Write the number in scientific notation.33,000,000
A. 3.3 × 107 B. 3.3 × 10-8 C. 3.3 × 108 D. 3.3 × 10-7
Mathematics
Solve the problem.Find the values of a, b, and c such that the graph of the quadratic equation 
passes through the points 
and 
A. a = 2; b = 5; c = -3 B. a = -2; b = -3; c = 5 C. a = -2; b = 5; c = -3 D. a = 2; b = -3; c = 5
Mathematics