Combine and simplify, if possible.11
- 4
A. 7
B. (7x - 1)
C. (15x - 1)
D. 15
Answer: A
Mathematics
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Factor completely.-82x2 + x4 + 81
A. (x + 1)(x - 1)(x + 9)(x - 9) B. (x + 9)2(x - 1)2 C. (x + 1)2(x - 9)2 D. (x2 + 1)(x + 9)(x - 9)
Mathematics
Provide an appropriate response.Find the area of the circle whose diameter is 28.5 feet to the nearest hundredth.
A. 203.06 ft2 B. 637.94 ft2 C. 89.54 ft2 D. 2,551.76 ft2
Mathematics
Solve the problem.In how many ways can a class president and a class secretary be chosen from a group of 8 candidates?
A. 16 B. 15 C. 56 D. 336
Mathematics
Solve. Round to the nearest tenth.A 30-ft-tall ladder is placed so that it reaches 20 ft up on the wall of a house. How far is the base of the ladder from the wall of the house?
A. 500 ft B. 1300 ft C. 36.1 ft D. 22.4 ft
Mathematics