Respuesta :

Answer:

z = 13°

Step-by-step explanation:

Given the complementary angles, < (5z - 6)° and (2z + 5)°, whose measures add up to 90°:

We can solve for the value of z by establishing the following equation:

< (5z - 6)° + < (2z + 5)° = 90°

5z - 6 + 2z + 5 = 90°

Add like terms:

7z - 1 = 90°

Add 1 to both sides of the equation:

7z - 1 + 1 = 90° + 1

7z = 91°

Divide both sides by 7 to solve for z:

7z/7 = 91°/7

z = 13°

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