Rationalize the denominator of the expression. Assume that all variables represent positive real numbers.-
A. - 
B. - 
C. - 
D. - 
Answer: D
Mathematics
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Find the indicated series by the given operation.Show that by integrating term by term the expansion of - 
, the result is the expansion for 
A. 
= x2 + 
x4 + 
x6 + 
x8 + . . .
B. 
= -x2 + 
x4 - 
x6 + 
x8 - . . .
C. 
= x2 - 
x4 + 
x6 - 
x8 + . . .
D. 
= -x2 - 
x4 - 
x6 - 
x8 - . . .
Mathematics
Divide and simplify. 
A. 5x4
B. x
C. 5x
D. 5x
Mathematics
Give the value of the indicated trigonometric function of a vector with the indicated end point.(0, -2); Find cos ?.
A. 1 B. -2 C. 2 D. 0
Mathematics
Find the probability of the following card hands from a 52-card deck. In poker, aces are either high or low. A bridge hand is made up of 13 cards.In bridge, exactly 3 kings and exactly 3 queens
A. 0.00097 B. 0.00024 C. 0.00337 D. 0.00018
Mathematics