Find the slope of the polar curve at the indicated point.r = 6 sin 4?, ? = 
A. 
B. 1 + 
C. -1
D. undefined
Answer: D
Mathematics
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Using a sum or difference identity, write the following as an expression involving functions of x.tan 
A. -tan x
B. tan x
C. 
D. 
Mathematics
Factor the perfect square.16x2 - 40xy + 25y2
A. (4x + 5y)2 B. (4x - 5y)(4x + 5y) C. (16x + 1)(x + 25) D. (4x - 5y)2
Mathematics
Multiply.i(7 - 9i)(4 - 7i)
A. 63i3 + 85i2 + 28i B. -85 + 35i C. 85 - 35i D. 91 + 13i
Mathematics
Perform the conversion. Round to the nearest tenth when necessary.81° C to Fahrenheit
A. 30.8° F B. 66.4° F C. 177.8° F D. 113.8° F
Mathematics