What is the value of x?

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a triangle with angle measures thirty-nine degrees and one hundred two degrees. the third angle has an unknown measure, x degrees.

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Let u = {q, r, s, t, u, v, w, x, y, z} a = {q, s, u, w, y} b = {q, s, y, z} c = {v, w, x, y, z}. list the elements in the set. a ∩ (b ∪ c)a) {q, s, w, y}b) {q, y, z}c) {q, s, u, w, y, z}d) {q, r, w, y, z}

Anumber is equal to twice a smaller number plus 3. the same number is equal to twuce the sum of the smaller number and 1. how many solutions are possible for this situation