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olya-2409 [2.1K]
3 years ago
15

During the school year, Gianna usually keeps a regular sleeping schedule. She goes to bed at 9:15 p.m. and wakes up at 6:30 a.m.

For how long does Gianna sleep on a school night? Express the answer in hours and minutes.
Mathematics
1 answer:
mariarad [96]3 years ago
3 0
9 hours and 15 minutes
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Answer:

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Factorise<br><br>4(a+b) - 6(a+b)²​
lawyer [7]

Good morning ☕️

Answer:

2(a+b)(2 - 3a - 3b)

Step-by-step explanation:

4(a+b) - 6(a+b)²​  

here we need to find the common factor between 4(a+b) and 6(a+b)²​

4(a+b) = 2×[2(a+b)]

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then

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8 0
3 years ago
In a bag of 18 oranges, 12 have gone bad.
Kobotan [32]

Answer:

B. 2:3

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Step-by-step explanation:

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