2 years ago

In AABC, mzA = 39°, mzB = (3x+7)°, and mzC = (5x-2)°. Find x. PLEASE HELP

Mathematics

2 answers:

Anna [14]2 years ago

5 0

Answer:

$x = 17$

Step-by-step explanation:

$m < a + m < b + m < c = 180 \\ \\ 39 + (3x + 7) + (5x - 2) = 180 \\ 39 + 8x + 5 = 180 \\ 44 + 8x = 180 \\ 8x = 180 - 44 \\ 8x = 136 \\ x = \frac{136}{8} \\ \\ x = 17$

faltersainse [42]2 years ago

4 0

Answer:

The sum of measures of angles in a triangle is 180. So if you take the three angles, add them, and set it to 180, you will get the answer. (39 + 3x + 7 + 5x - 2 = 180)

Step-by-step explanation:

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