Solve the problem.A roof truss in the shape of a right triangle has a perimeter of 109 ft. If the hypotenuse is 7 ft longer than one of the other sides, what are the sides of the truss?
A. 45.8 ft; 17.3 ft
B. 15.9 ft; 70.2 ft
C. 84.7 ft; 45.8 ft
D. 38.8 ft; 24.3 ft
Answer: D
Mathematics
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Solve the system by the substitution method.
A. {(-8, -5)} B. {(8, -5)} C. {(-8, 5)} D. {(8, 5)}
Mathematics
Graph the equation. -
= 1
A. 
B. 
C. 
D. 
Mathematics
Rewrite the equation in standard form. Find the center or vertex. Identify the conic and sketch the curve.x2 + y2 + 2x + 12y - 12 = 0
A. circle; center (-1, -6);
(x - 1)2 + (y - 6)2 = 49
B. circle; center (1, 6);
(x + 1)2 + (y + 6)2 = 49
C. circle; center (-1, -6);
(x + 1)2 + (y + 6)2 = 49
D. circle; center (1, 6);
(x - 1)2 + (y - 6)2 = 49
Mathematics
Solve the compound inequality. Graph the solution set and write the solution in interval notation.x ? 1 and x ? -2
A. (-?, -2] ? [1, ?)
B. (-?, -2]
C. [-2, ?)
D. [-2, 1]
Mathematics