Solve the system of equations using substitution.
A. x = 1, y = 4; x = 4, y = 19
B. x = 1, y = 2; x = -1, y = 2
C. x = 2, y = -1; x = 1, y = 2; x = -1, y = 2; x = -2, y = -1
D. x = 2, y = -1; x = -2, y = -1
Answer: C
You might also like to view...
Solve.A man rode a bicycle for 12 miles and then hiked an additional 8 miles. The total time for the trip was 5 hours. If his rate when he was riding the bicycle was 10 miles per hour faster than his rate walking, what was each rate?
A. Bike: 11.5 mph Hike: 1.5 mph B. Bike: 12 mph Hike: 2 mph C. Bike: 13 mph Hike: 3 mph D. Bike: 14.5 mph Hike: 4.5 mph
Determine whether the graph is the graph of a function.
A. yes B. no
Solve the problem. Round dollars to the nearest cent and rates to the nearest tenth of a percent.A store manager paid $188 for an item and set the selling price at $240.64. What was the percent markup?
A. 21% B. 28% C. 27% D. 30%
Determine whether the two pairs of numbers are proportional.12.56, 3.14 and 3.14, 0.785
A. Yes B. No