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yawa3891 [41]
3 years ago
13

How can I solve x - y = -8 Is y alone? ​

Mathematics
1 answer:
Juli2301 [7.4K]3 years ago
7 0

Answer:

x - y = -8

+ y +y

x = -8y

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How to divide 7 divided by 7/4
Mariulka [41]

Answer:

4

Step-by-step explanation:

7÷7/4

in these cases we multiply by the reciprocal

7× 4/7

7 and 7 can be cancelled with each other

the remaing answer = 4

7 0
4 years ago
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20+8y-9y-21 which expression is equivalent
faust18 [17]
Since you didn't provide expression to see which one is equivalent,, I will simply solve the expression you provided. If you need help finding out which expression option is equivalent after I solve this for you,, let me know and I would be more than happy to help you figure it out.
The first step for solving this expression is to calculate the difference between 20 and 21. We can start solving this by keeping the sign of the number with the larger absolute value and subtract the smaller absolute value from it. This will look like the following:
-(21 - 20)
Now subtract the numbers and add it back into the expression.
-1 + 8y - 9y
Next we need to collect the like terms with a y variable by subtracting their coefficients.
(8 - 9)y
Calculate the difference in the parenthesis.
-1y
Remember that when the term has a coefficient of -1,, the number doesn't have to be written but the sign must remain. 
-y
Lastly,, add this back into the expression to get your final answer.
-1 - y
Let me know if you have any further questions.
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4 0
3 years ago
Find the value of x.
KatRina [158]
The value of x=x because x can be anything, it can even be a negative or a fraction but mostly a whole or negative number
7 0
4 years ago
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HELP ME PLEASEEE! Ty:)
Jlenok [28]
I can help you if you mark me as braì LG
5 0
3 years ago
Your parents have decided to buy a new Toyota 4Runner for 25,635. According to the dealer, the car will depreciate in value appr
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Let the value of the car be represented by V and the amount of years by y. 
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V = 25,635 - 3000y
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Now, we want to know when the car is worth $3,135, so we know V = 3,135
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Collecting terms gives us:
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Finally we divide by -3,000 to find 'y'
y = -22,500 / -3,000 = 7.5

Hence, the car will be worth $3,135 after 7.5 years.
8 0
4 years ago
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