Answer:
I dont know this but try Alpha Wolfram, its for all math and its sooo helpful (for future reference)
Step-by-step explanation:
(:
You would have to have 20 minutes of studying per hour of class time. This means that 60 times 2=120. 120-90=30. 30 minutes is half an hour. So you would do 20 divided by 2 since u are adding another half hour to studying. You would add 60 and 10 to get 70 as your answer I think. I hope this helps and is correct :)
(9+x)/3x = 5/6
(9+x)/x = 15/6 (then distribute out x on bottom)
9/x + 1 = 15/6
9/x = 1.5
x = 9/1.5
x=6
Answer:
b=-5/16
Step-by-step explanation: