Evaluate the following expression without using a calculator. (Round to the tenth decimal place).
?
?
A. 1.0 × 10-4?
B. 1.0 × 10-5
C. 1.0 × 1011
D. 1.0 × 109
E. 1.0 × 10-9
Answer: C
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Combine like terms.-8b + 3b
A. -11b B. 5b C. -5b2 D. -5b
Use a proportion to solve the problem.A recent advertisement claimed that 2 out of every 5 doctors recommend a certain herbal supplement to increase energy levels. If a local hospital employs 140 doctors, how many doctors would you expect to recommend the supplement? (Round to the nearest whole number, if necessary.)
A. 350 doctors B. 28 doctors C. 56 doctors D. 1400 doctors
Divide and simplify.
÷ 
A. 
B. 
C. 
D. 15x3
According to the National Health Survey, the heights of adult males in the United States are (normally distributed with mean) 73 inches, and standard deviation of 2.8 inches. What is the probability that an adult male chosen at random is between 65 inches and 75 inches tall?
What will be an ideal response?