Multiply. Leave the answer in trigonometric form.
?
?
A. ?
B. 
C. ?
D. ?
E. ?
Answer: B
Mathematics
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Convert as indicated. If necessary, round to the nearest tenth of a degree.The temperature recorded on a thermometer was 28°C. Find the corresponding temperature in degrees Fahrenheit.
A. 47.6°F B. -16.4°F C. 18.4°F D. 82.4°F
Mathematics
Simplify.
A. 
B. 
C. 7x + 3
D. 
Mathematics
Determine the appropriate rotation formulas to use so that the new equation contains no xy-term.
x2 + 11xy + 12y2 + 4
y + 23 = 0
A. x = 
(2x' + y') and y = 
(x' - 2y')
B. x = 
(x' + 2y') and y = 
(2x' - y')
C. x = 
(2x' - y') and y = 
(x' + 2y')
D. x = 
(x' - 2y') and y = 
(2x' + y')
Mathematics
Solve the problem.How many relay teams of 4 members can be chosen from a 7 member team to run in a relay race?
A. 210 B. 22 C. 28 D. 840
Mathematics