Divide and simplify.
A. 3r7 - 5r4
B. 3r8 - 5r5
C. 3r6 - 5r3
D. 15r6 - 25r3
Answer: C
Mathematics
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Write the number 
in scientific notation.
?
A.
B.
73,300
C.
D.
E.
Mathematics
Simplify the expression 
as much as possible after substituting 
for x.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics
Solve. Give an exact answer unless indicated otherwise.Given that sin 
= 
and cos 
= 
, find tan 
.
A. 
B. 
C. 
D. 
Mathematics
Find the partial derivative.Find fy(4, 1) when f(x, y) = 4xy - 3y.
A. 0 B. 13 C. 16 D. 4
Mathematics