Combine like terms.4x + 15x

A. 38x
B. 19x
C. 19x2
D. 60x


Answer: B

Mathematics

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Use the ac method to factor the trinomial, or state that the trinomial is prime.8x2 - 18x + 9

A. (8x + 3)(x + 3) B. prime C. (2x + 3)(4x + 3) D. (2x - 3)(4x - 3)

Mathematics

Multiply. Simplify by combining like terms.(9a2 + 13b2)(9a2 - 13b2)

A. a4 - 169b4 B. 81a4 - 169b4 C. 81a4 + 234ab - 169b4 D. 81a2 - 234a2b2 - 169b4

Mathematics

Write the solution set in interval notation.2 ? x ? 6

A. {x|6 ? x ? 2} B. {x|2 ? x ? 6} C. {x|6 ? x ? 2} D. {x|2 ? x ? 6}

Mathematics

Use the formula for the general term (the nth term) of an arithmetic sequence to find the indicated term of the sequence with the given first term, a1, and common difference, d.Find a11 when a1 = 21, d = -3.

A. -12 B. -30 C. -9 D. 51

Mathematics