Solve the equation. If the equation has no real solution, so state.
= 
A. x = 1
B. x = 
C. x = 
D. x = 
Answer: A
Mathematics
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Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(s, t), y = h(s, t), z = k(s)
A. 
= 
+ 
B. 
= 
+ 
C. 
= 
+ 
D. 
= 
Mathematics
Find a 95% confidence interval for the true population proportion.In a poll of 1096 college students, 15% said that they had cheated at least once on an exam.
A. 13.5% to 16.5% B. 14.9% to 15.1% C. 9.0% to 21.0% D. 12.0% to 18.0%
Mathematics
Solve the problem.Jim drove 276 miles in 6 hours. If he can keep the same pace, how long will it take him to drive 1242 miles?
A. 1656 hr B. 27 hr C. 37 hr D. 54 hr
Mathematics
Simplify the expression. (Assume that r, s, and t are positive.)
?
?
A. 
B. 
C. 
D. ?
E. ?
Mathematics