Need asap 20 points given
the measure of ∠dab equals 110º. the measure of ∠acb equals 20º.what is m∠abc?

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The first step is always to make an illustration of the problem. My understanding of the problem is shown in the attached picture. To make the problem easier to solve, I assumes that points C, A and D are collinear. Because if it isn't we can't find any relations that can solve the problem.

∠DAB and ∠CAB are supplementary angles. So,
∠CAB = 180 - 110 = 70°

Since a triangle has 180° altogether,
x = ∠ABC = 180 - 70 - 20 = 90°