Simplify the expression. Assume that all variables represent nonnegative real numbers.9
- 5
A. -45
B. 4
C. 14
D. 4
Answer: B
Mathematics
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Find the focus and directrix of the parabola.x = 7y2
A. 
, x = 
B. 
, x = - 
C. 
, y = - 
D. 
, x = - 
Mathematics
Write as an exponential expression.
A. (7x3y)7/9 B. (7x3y)9/7 C. (7xy)12 D. (7x3y)2
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Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given angle. Give exact answers with rational denominators.Find csc B when a = 7 and b = 4.
A. 
B. 
C. 
D. 
Mathematics
The function f is one-to-one. Find its inverse.f(x) =
A. f-1(x) = 
B. f-1(x) = x3 + 25
C. f-1(x) = x3 - 5
D. f-1(x) = x - 5
Mathematics