The hyphen is used to separate syllables in a word. For example, televi-
sion.
The hyphen is used in some situations with prefixes. One rule states that you can use a hyphe if it comes before proper nouns or proper adjectives. For example: trans-Atlantic, mid-October
The hyphen is not used to indicate a pause.
Question 2:
It's false.
They are not the same symbol. The hyphen is shorter.
Hyphens are not separated by spaces, while a dash has a space on either side.
Hyphens are mainly used for the reasons stated above, while dashes are used to mark a pause. They are parenthetical statements.
Hyphens are used ot separate parts of words, dashes are used to separate groups of words.
Question 3:
The correct way of using a hyphen is <em>the man-eating jellyfish</em>.
The rule here is: use a hyphen to join two or more words that come before a noun and act as an adjective. This is called a <em>compound adjective</em>.
The ADB said it sees public investments rebounding during the 2nd half of 2019. Slowing inflation, low unemployment, and steady remittances are expected to support household consumption.