4 years ago

The value of x is ?

Mathematics

2 answers:

ivolga24 [154]4 years ago

6 0

Answer:

3 degrees :)

Step-by-step explanation:

soldi70 [24.7K]4 years ago

3 0

Answer:

3 degrees

Step-by-step explanation:

Recall that the sum of the interior angles of a triangle is always 180 degrees. Here two interior angles are shown [ 25x and (57 + x) ], and the third can be calculated [180 - 45x].

Summing these up, we get (25x) + (57 + x) + (180 - 45x), or -20 - 19x, which we set equal to 180:

(25x) + (57 + x) + (180 - 45x) = 180. Subtract 180 from both sides, obtaining:

25x + 57 + x - 45x = 0. Then 26x - 45x = -57, or x = 3.

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