Fill in the blank with the appropriate symbol, ? or ? .
________ {x|x is a rational number}
A. ?
B. ?
Answer: A
Mathematics
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Solve the following simultaneous equations using the addition/subtraction method.
2x + y = 6 x + 2y = 3
Mathematics
Write the binomial expansion of the expression.(3x + 5)3
A. 27x3 + 135x2 + 135x + 125 B. 9x6 + 15x3 + 15,625 C. 27x3 + 135x2 + 225x + 125 D. 9x2 + 30x + 25
Mathematics
Subtract.9.68 - 3.06
A. 12.74 B. 6.62 C. 6.72 D. 13.74
Mathematics
Find the volume. Use ? ? 3.14. Round to the nearest tenth when necessary.a cone with height 20 in. and radius 8 in.
A. 2009.6 in.3 B. 2679.5 in.3 C. 1339.7 in.3 D. 334.9 in.3
Mathematics