Calculate the mean of the set. Round to the nearest tenth, if necessary.81 lbs 93 lbs 65 lbs 89 lbs 62 lbs
A. 65 lbs
B. 78 lbs
C. 93 lbs
D. 81 lbs
Answer: B
Mathematics
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Find the value of d2y/dx2 at the point defined by the given value of t.x = t + cos t, y = 2 - sin t, t = 
A. -4
B. -
C. -2
D. 
Mathematics
Express the integrand as a sum of partial fractions and evaluate the integral.
dx
A. 2 ln 
- 
+ C
B. 4 ln 
+ 
+ C
C. 4 ln 
+ 
+ C
D. 4 ln 
- 
+ C
Mathematics
Write the improper fraction as a mixed number.
A. 18
B. 18
C. 2
D. 
Mathematics
Identify which of three conceptual models of division (repeated subtraction, partition, missing-factor) best corresponds to the problem.A student arranges to pay off a loan with monthly payments. If the loan is for $3000 and the monthly payment is $150, how many months will it take to pay off the loan?
A. Missing-factor B. Repeated subtraction C. Partition
Mathematics