According to wallach, what is short-termism, and why is it a problem?
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Short-termism means the short time future which includes problem-solving and planning at this time.

Explanation:

The short-termism means a plan for a short time like less than 5 years. Short-termism may be effective for a quick solution but not sustainable in the long run. Ari Wallach warned us that short-termism reduces our problem addressing capability. As a result, we don’t get our-self prepared for long term projects and impacts. We see short-termism in regular life especially in schools or playgrounds where the teachers are appointed for short terms to get results. But it is not the right way. To get a perfect solution, we must focus on long term plans.

if triangle abc is congruent to triangle def, their interior angles are congruent, because congruent parts of congruent triangles are congruent (cpctc).

that means ∠d is congruent to ∠a; ∠d is equal to 8x - 2.

interior angles of all triangles add to equal 180 degrees, so you can set the sum of these interior angle values equal to 180 and solve for x.

180 = (8x - 2) + 22 + 72

180 = 8x - 2 + 22 + 72

180 = 8x + 92

88 = 8x

11 = x

x = 11