Give the exact value.cos 45°
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Use the information given in the table to solve the problem.The table gives the value of a 1957 Chevy BelAire in #2 condition for selected years.
Use the concept of an average or mean to estimate the value of a 1957 ChevyBelAire in #2 condition in 1983.
A. $ 9229.63 B. $ 9190.50 C. $ 9200.50 D. $ 9171.37
Mathematics
Simplify.
A. 
B. - 
C. 
D. 
Mathematics
Solve the equation. State whether the equation is a contradiction, an identity, or a conditional equation.
= 
A. {49}; conditional equation B. {-10}; conditional equation C. all real numbers; identity D. ? or { }; contradiction
Mathematics
Assume x and y are functions of t. Evaluate dy/dt.xy + x = 12; dx/dt = -3, x = 2, y = 5
A. 3 B. -9 C. -3 D. 9
Mathematics