Question:
If x = 2, y = 3 and z = -5, then x^2 + y^2 +2z = ?
Answer:
Explanation:
Given
Required
Determine 
Substitute values for x, y and z in the above expression:
Vice Principal and Physical Education. VP and PE respectively.
The Three types of technology implemented at the Gautrain are;
- A contactless smart card (CSC) system
- RFID
- An Earth Pressure Balance Shield TBM
<h3>What technology does the Gautrain use?</h3>
The Gautrain is one where the Collection of passenger fares uses the contactless smart card (CSC) technological system.
It is one that uses a smart chip and RFID, that helps customers to hold the card near a card reader to log in/ start their journey into the system.
Learn more about Gautrain from
brainly.com/question/26676205
Answer:
the water is frozen solid as the temperature drops each winter and the ice melts when the temperature increases again
Explanation:
What is a pond in the summer is a skating rink in the winter. Water exists in three different states: as a solid, liquid or gas. When Brandon comes to the park in summer and then in winter, he sees the same water in a liquid and solid state respectively.
