Considering the given value of t, choose the ordered pair that lies on the graph of the given pair of parametric equations.x = sin t, y = cos t; t = 
A. 
B. 
C. 
D. 
Answer: A
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Calculate the mean of the set of data values. If necessary, round to one more decimal place than the data values have. The retirement ages, in years, of nine employees of a software company: 
A. 57.3 yr B. 58.0 yr C. 56.6 yr D. 57.9 yr
Solve problems using a calculator.The Passive House Standard is a strict building code used as a state guideline for building energy-efficient homes. The total primary energy consumption of a building following this code must not be more than 19,020 Btu per square foot per year. What would this annual maximum be for a 4500-square-foot house?
A. 85,540,000 Btu per year B. 85,590,000 Btu per year C. 85,570,000 Btu per year D. 85,530,000 Btu per year
Solve the problem that involves probabilities with independent events.You are dealt one card from a 52-card deck. Then the card is replaced in the deck, the deck is shuffled, and you draw again. Find the probability of getting a picture card the first time and a spade the second time.
A. 
B. 
C. 
D. 
Determine whether the given equation is an identity.
+ 
= - 
A. Yes B. No