Answer:
Um, the last one should be it, there isn't any closing paragraph. But the second one is also weird because the comment is not properly finishes. The comment should be <!-- Sth -->
Answer:
Explanation:
A computer system can interact with its environment using hardware that does so such as cameras, robotic arms, thermometers, smart devices etc. These hardware devices gather information from the environment and transfer it to the computer system in a format known as bits through binary electrical impulses.
I think its b, but not so sure
dont sue me if im wrong please
Answer:
B=10
Explanation:
(-21) x 0=0 and (-50)÷(-5)=10
0+10=10