Solve the literal equation for the specified variable.d = rt for r
A. r = 
B. r = 
C. r = d - t
D. r = dt
Answer: B
Mathematics
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Evaluate the integral.
A. 
cos7 ? + C
B. 
cos6 ? + C
C. - 
cos9 ? + C
D. - 
cos8 ? + C
Mathematics
Perform the indicated operation and simplify.
- 
A. 
B. 
C. 
D. 
Mathematics
Use the even-odd properties to find the exact value of the expression. Do not use a calculator.sin (-30°)
A. - 
B. 
C. 
D. - 
Mathematics
Solve.Martha can rake the leaves in her yard in 4 hours. Her younger brother can do the job in 7 hours. How long will it take them to do the job if they work together?
A. 
hr
B. 2
hr
C. 7 hr
D. 9
hr
Mathematics