Add.-4.2 + (-7.1) + (-5.8)
A. -8.7
B. 2.9
C. 5.5
D. -17.1
Answer: D
Mathematics
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Find the integral.
A. 
x2e2x - xe2x + 
e2x + C
B. 
x2e2x - 
xe2x + 
e2x + C
C. 
x2e2x - 
xe2x + 
e2x + C
D. 
x2e2x - 
xe2x + C
Mathematics
Solve the problem.A teacher designs a test so a student who studies will pass 93% of the time, but a student who does not study will pass 7% of the time. A certain student studies for 93% of the tests taken. On a given test, what is the probability that student passes?
A. 0.049 B. 0.87 C. 0.865 D. 0.5
Mathematics
Suppose the revenue (in dollars) from the sale of x units of a product is given by the equation 
. Find the marginal revenue when 45 units are sold. Round your answer to the nearest dollar.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
what is the Z score for a 90% confidence level?
What will be an ideal response?
Mathematics