Complete the sentence so the result is an identity. Let x be any real number. + sin2x = 1
A. cos2x
B. tan2x
C. sin2x
D. csc2x
Answer: A
Mathematics
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Multiply.(9
+ 8 )(
- 5)
A. 9x - 37
+ 40
B. 9x + 37
- 40
C. 9x + 53
- 40
D. 9x - 37
- 40
Mathematics
Find the slope and the y-intercept of the line.7.28x + 2.6y = 10.92
A. m = 7.28, (0, 10.92) B. m = 2.8, (0, 4.2) C. m = -7.28, (0, 10.92) D. m = -2.8, (0, 4.2)
Mathematics
Provide an appropriate response.The life (in hours) of light bulbs of a certain brand is normally distributed with mean 1000 and standard deviation 100. What percentage of such bulbs will burn more than 950 hours?
A. 65.54 B. 40.95 C. 69.15 D. 72.15 E. 68.34
Mathematics
Solve.Amy can clean the house in 8 hours. When she works together with Tom, the job takes 4 hours. How long would it take Tom, working by himself, to clean the house?
A. 8
hr
B. 8 hr
C. 4 hr
D. 9hr
Mathematics