I believe this is the way to solve it.
22 - 2 = 20
20 is 90.9% of 22
So the probability of choosing a student with a sibling at random should be 90.9% (or you can round up to 91%)
I hope this helps :)
Answer:

Step-by-step explanation:
Answer:

Step-by-step explanation:
The ratio of gallons used for one shower is obtained by dividing the total of gallons by the number of showers per day:


The ratio of gallons used for one shower to total gallons used is:


Answer:
50 minutes left.
Step-by-step explanation:
The easiest way to do this is to convert all the fractions into <em>minutes</em>
<em />
So, she would've spent <u>1 hour and 30 minutes</u> on her homework and <u>40 minutes on her telephone</u>. If you <u>add</u> those amounts up, you get <u>2 hours and 10 minutes</u>. Since she goes to bed <u>3 hours after dinner</u>, and <u>2 hours and 10 minutes have gone by</u>, you do 3 hours - 2 hours 10 minutes and you get 50 minutes.
Hope that makes sense. Let me know if you have any questions.
H= -8. H-2h= 9-1; -h=8; h= -8