If an atom has 18 positively - charged protons and 18
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Answer:
<h2>∠A = 30°</h2><h2></h2>Step-by-step explanation:
∠A + ∠B = 180
where ∠A = 6x - 18
∠B = 14x + 38
<u>first step is to solve for x:</u>
6x - 18 + 14x + 38 = 180
6x + 14x = 180 + 18 - 38
20x = 160
x = 160 / 20
x = 8
<u>now substitute x=8 into angle A</u>
∠A = 6x - 18
∠A = 6(8) - 18
∠A = 30°
