Solve the problem.Find the area of the right triangle ABC with A = (-2, 7), B = (7, -1), C = (3, 9).
A. 29 square units
B. 
square units
C. 58 square units
D. 
square units
Answer: A
Mathematics
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Solve by the substitution method. If the system is inconsistent or dependent, say so.7x + 9y = 563x - 5y = 24
A. No solution B. (7, 1) C. (8, 1) D. (8, 0)
Mathematics
Simplify.5 - 3 ? 8
A. 29 B. 16 C. -19 D. 19
Mathematics
Add or subtract as indicated. Simplify, if necessary. 
k + 
k
A. 
k
B. 1
C. k
D. 
k2
Mathematics
Sketch the graph of the power function by hand, using a calculator only to evaluate y-values for your chosen x-values. On the same axes, graph y = x2 using a dotted line for comparison. In each case, x ? 0.f(x) = x2.6
A. 
B. 
C. 
D. 
Mathematics