Find the derivative of the function.f(x) = cos 
A. f '(x) = 
B. f '(x) = 
C. f '(x) = - sin 
D. f '(x) = - sin 
Answer: A
Mathematics
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Provide missing statements for the following proof.Given: 
and 
Prove: 
S1. R1. GivenS2. R2. Vertical angles are congruent.S3. R3. SAS
What will be an ideal response?
Mathematics
Find the x- and y-intercepts of the graph of the given equation.y = x2 + 4x - 7
A. x-intercepts: -2 - 
, -2 + 
; y-intercept: -7
B. x-intercepts: -1 - 
, -1 + 
; y-intercept: -7
C. x-intercepts: none; y-intercept: -7
D. x-intercepts: 1 - 
, 1 + 
; y-intercept: -7
Mathematics
Evaluate.
A. 
B. 212
C. 
D. 
Mathematics
Determine the most appropriate metric unit to go in the blank. Choose from km, m, cm, mm, L, ml, kg, g, and mg.The apple weighs 138 
.
A. g B. kg C. ml D. mg
Mathematics