Perform the indicated operation(s). Simplify if possible.- 
- 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Verify that the equation is an identity.sin
= -cos ?
What will be an ideal response?
Mathematics
Solve. Write a mixed numeral for the answer.Peter must practice the piano 12
hours per week. He has already practiced 2
hours. How many more hours does he need to practice?
A. 9
hr
B. 9 hr
C. 10
hr
D. 8
hr
Mathematics
Provide an appropriate response.In Virginia, each automobile license plate consists of a single digit followed by three letters, followed by three digits. How many distinct license plates can be formed if there are no restrictions on the digits or letters?
A. 10,757,600 B. 175,7560,000 C. 175,760 D. 17,575,600 E. 17,576
Mathematics
The sum of measures of the angles of a polygon is 900°. How many sides does it have?
(a) 7 (b) 8 (c) 9 (d) 10
Mathematics