Use a graphing calculator to determine which expression completes the identity.The expression 
is to be the left hand side of an equation that is an identity. Which one of the following four expressions can be used as the right hand side of the equation to complete the identity?
A. cos x + 1
B. tan x - sec x
C. cot x + sin2x
D. sin x + cos x
Answer: D
Mathematics
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Add.-220 + 450
A. 670 B. 230 C. -670 D. -230
Mathematics
Apply the distributive property.-(-7x + 3)
A. 7x + 3 B. 7x - 3 C. -7x + 3 D. -7x - 3
Mathematics
Make the indicated temperature conversion. Round answers to one decimal place if necessary.Convert 72°C to Fahrenheit.
A. 97.6°F B. 61°F C. 25.4°F D. 161.6°F
Mathematics
Find the average value of the given function 
over the plane region R.
?
; R is the triangle with vertices (0, 0), (1, 0) and (1, 1).
What will be an ideal response?
Mathematics