Solve the system by the substitution method.
A. ?
B. {(4, 6)}
C. {(2, 8)}
D. {(x, y) 
}
Answer: A
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Find the indicated vector.Let u = 
. Find -3u.
A. 
B. 
C. 
D. 
Solve the problem.A rug is to fit in a room so that a border of even width is left on all four sides. If the room is 19 feet by 23 feet and the area of the rug is 285 square feet, how wide will the border be?
A. 3 ft B. 4.5 ft C. 2 ft D. 4 ft
Solve the problem.Cruising magazine published 34 freelance articles last year. If freelance articles are 11% of the total articles, how many articles were published? Round to the nearest whole article.
A. 370 articles B. 309 articles C. 37 articles D. 31 articles
Find the length of the arc on a circle of radius r intercepted by a central angle ?. Round to two decimal places. ? Radius r Central Angle ? 15 inches ?123° ?
A. s? 32.20 inches B. s ? 15.68 inches C. s ? 10.25 inches D. s ? 34.20 inches E. s ? 30.20 inches