Find A-1 if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Answer: B
Mathematics
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Solve the problem.At lift-off, a rocket weighs 40.2 tons, including the weight of fuel. It is fired vertically, and the fuel is consumed at the rate of 2.23 tons per 1,000 ft of ascent. How much work is done in lifting the rocket to an altitude of 10,000 ft?
A. 3.28 x 105 ft?ton B. 2.91 x 105 ft?ton C. 3.46 x 105 ft?ton D. 5.14 x 105 ft?ton
Mathematics
Find the total amount due on the loan. Round to the nearest cent.Principal = $14,100Rate = 14%Time in months = 15
A. $212,910.00 B. $1,670,850.00 C. $131.60 D. $16,567.50
Mathematics
Solve using the elimination method. 0.6x - 0.4y = -7-0.7x - 0.1y = 5.9
A. (4, -9) B. (-90, 40) C. (-0.9, 0.4) D. (-9, 4)
Mathematics
Solve.
- 
= 2
A. 76
B. 92
C. - 
D. -4
Mathematics