Solve the system of equations by Gaussian elimination.
A. {(4, -5, -2)}
B. {(-2, -5, 4)}
C. {(-2, 4, -5)}
D. ?
Answer: B
Mathematics
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Convert the angle to decimal degrees and round to the nearest hundredth of a degree.57°25'27"
A. 57.48° B. 57.42° C. 57.43° D. 57.38°
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Solve the number problem by finding the value of the unknown number.When twice a number is subtracted from 25, the result is 15.
A. 8 B. 12 C. 4 D. 5
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Use I = Prt for simple interest to find the indicated quantity.P = $3000; t = 90 days; I = $105. Find r. (Use 360 days in a year.)
A. 3.5% B. 14.0% C. 9.7% D. 14.2%
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Solve the problem.Tim needs to apply 2
gallons of herbicide per acre of soybeans. How many gallons of herbicide are needed for 388 acres?
A. 194
gallons
B. 196 gallons
C. 155
gallons
D. 970 gallons
Mathematics