Identify ? and ? in the following expression which is the right side of the formula for cos (? - ?).cos 
cos 
+ sin 
sin 
A. ? = 
, ? = 
B. ? = 
, ? = 
C. ? = 
, ? = - 
D. ? = - 
, ? = 
Answer: B
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The temperature T, in degrees Fahrenheit, of a cup of coffee t minutes after it is poured is given by
?
.
?
When does the temperature of the coffee reach 150 degrees? Round your answer to two decimal places if necessary.
?
A. After 15.6 minutes B. After 65.49 minutes C. After 63.54 minutes D. After 20.2 minutes
Find the least common denominator.
, 
, 
A. (k - 9)(k + 3)(k - 5)(k + 5) B. (k - 9)(k + 3)3(k - 5)(k + 5) C. (k - 9)(k - 5)(k + 5) D. (k - 9)(k + 3)(k - 5)
Draw a valid conclusion from the following argument or write “no conclusion is possible:” If a quadrilateral is a square, then it has four congruent sides and four congruent angles. If a quadrilateral has four congruent sides, then it is a rhombus. SOFT is a square.
What will be an ideal response?
Find the functions f and g so that F(x) = (f o g) (x).F(x) = ?5x + 5?
A. f(x) = ?x?, g(x) = 5x + 5 B. f(x) = ?-x?, g(x) = 5x - 5 C. f(x) = x, g(x) = 5x + 5 D. f(x) = -?x?, g(x) = 5x + 5