ANSWER
![z = 43 \degree](https://img.qammunity.org/2020/formulas/mathematics/middle-school/rf8ygb6ksmx4tzrycge7o33b78hmggf7hv.png)
EXPLANATION
We want to calculate the value of the angle marked z° in the diagram.
Since the given diagram is a right angle triangle, one of the angles is 90°.
The sum of the angles in a triangle is 180°.
This implies that,
![z + 90 \degree+ 47 \degree = 180 \degree](https://img.qammunity.org/2020/formulas/mathematics/middle-school/2bdrf7lkncmcq78w2tdivk74sby2933x4a.png)
We group like terms to obtain,
![z = 180 \degree - 90 \degree - 47 \degree](https://img.qammunity.org/2020/formulas/mathematics/middle-school/r21lwgh6x5bnsop05taxzsmpci94jg5vzb.png)
We simplify to obtain,
![z = 43 \degree](https://img.qammunity.org/2020/formulas/mathematics/middle-school/rf8ygb6ksmx4tzrycge7o33b78hmggf7hv.png)