Sure, honey, you hyphenate "30 minutes" when it's being used as an adjective before a noun, like "a 30-minute workout." But if it's just hanging out by itself, no need for that hyphen. Keep it sassy, darling!
30 minutes = 1/2 hour
0.50 of an hour is 30 minutes.
30 minutes = 1,800 seconds
To convert hours to minutes, you multiply by 60 since there are 60 minutes in an hour. So, 2 hours is equal to 2 x 60 = 120 minutes. Adding 30 minutes to this gives a total of 120 + 30 = 150 minutes. Therefore, 2 hours and 30 minutes is equal to 150 minutes.
8:30 minus 60 minutes is 7:30 830 minutes minus 60 minutes is 770 minutes.
No.
No - "Each half is 60 minutes." However, you would hyphenate in a sentence such as, "The game consists of 60-minute halves."
Don't hyphenate; ongoing is one word.
You do not hyphenate the number.
I think it's more accepted to hyphenate it.
You hyphenate it only at the hyphen.
You do not need to hyphenate.
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30 minutes
You would hyphenate "thank you" when it is used as an adjective before a noun, such as in "a thank-you card."
Can you, or should you? You can hyphenate it if you're moving between lines in a paragraph and need to break up the word. You shouldn't hyphenate it normally.
30.