Find the indicated probability or percentage for the normally distributed variable.A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, find the probability of a rating that is between 170 and 220.
A. 0.226
B. 0.155
C. 0.381
D. 0.071
Answer: C
Mathematics
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Solve the initial value problem.t
+ 7y = t3; t > 0, y(2) = 1
A. y = 
+ 
t-7, t > 0
B. y = 
+ 
t-7, t > 0
C. y = 
+ 
t-7, t > 0
D. y = 
- 
t-7, t > 0
Mathematics
Provide an appropriate response.Perform the indicated operation and write the answer with positive exponents in lowest terms: (a)3/7 ? (a)-2/7
What will be an ideal response?
Mathematics
Divide, if possible. If a quotient is undefined, state so.-40 ÷ 5
A. -7 B. 8 C. -9 D. -8
Mathematics
Solve the equation by completing the square.-x2 + 2x = -1
A. {1, 2}
B. 
C. {-1 ± 
}
D. {1 ± 
}
Mathematics