Add or subtract. Simplify the answer.
- 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Give the center and radius of the circle. Then sketch its graph.x2 + y2 = 25
A. center (1, 1), r = 25
B. center (0, 0), r = 25
C. center (0, 0), r = 5
D. center (1, 1), r = 5
Mathematics
Simplify.73 - 6 ? 2 ? 4
A. 61 B. 536 C. 244 D. 25
Mathematics
Simplify the expression.16 + (11 ? 23) - 23
A. 27 B. 246 C. 0 D. 598
Mathematics
Solve the problem.Sue can sew a precut dress in 3 hours. Helen can sew the same dress in 2 hours. If they work together, how long will it take them to complete sewing that dress? Give your answer rounded to one decimal place, if necessary.
A. 1.8 hr B. 5 hr C. 1.2 hr D. 2.5 hr
Mathematics