Answer:
this question does not make much sense to me by how it is written, sorry, but It might be -411
Step-by-step explanation:
-9 - 81 = -90
-90 - 321 = -411
The probability you will roll a sum of 9 is 1/4.
<h3>What is the probability?</h3>
Probability determines the chances that an event would happen. The probability the event occurs is one and the probability that the event does not occur is 0. The more likely the event is to happen, the closer the probability value would be to 1. The less likely it is for the event not to happen, the closer the probability value would be to zero.
The probability you will roll a sum of 9 = total times a sum of 9 is derived / total sample spaces
- total times a sum of 9 is derived = (3 + 6) , (6 + 3) , (4 + 5) , (5 + 4)
- Total sample spaces = 36
The probability you will roll a sum of 9 = 4/36 = 1/9
To learn more about probability, please check: brainly.com/question/13234031
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Answer:

Step-by-step explanation:
Given: 
Step 1: Distribute the Left-Hand Side

Step 2: Collect like terms

Step 3: Divide both sides by 2

Answer:
could you please add more info to this problem
Answer:
y=3.5x+1.5
Step-by-step explanation:
Move the y to the other side. 7x+3=2y
Divide by 2. 3.5x+1.5=y
Therefore the linear equation is y=3.5x+1.5