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makvit [3.9K]
3 years ago
8

GIVING BRAINLIEST Solve the system using substitution

Mathematics
1 answer:
Andrew [12]3 years ago
5 0

Answer:

2

Step-by-step explanation:

because you need to solve it and to solve it u have to put in -2 which is y so u would substitute it im pretty sure

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Whats the answer and work for 7x+8(x+1/4)=3(6x-9)-8 ?​
Marat540 [252]

Answer:

=37

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     3

Step-by-step explanation:

3 0
3 years ago
Use the original price and the markdown to find the retail price.
ziro4ka [17]

Answer:

$33.6.

Step-by-step explanation:

40 x .16 = 6.4

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4 0
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7 0
3 years ago
Read 2 more answers
How do you substitute 5x+4y=0 , x-y=9
-BARSIC- [3]
Steps:
1.Change x-y=9 into slope-intercept form.
Subtract x on both sides
-y=-x + 9
Divide everything by -1
Y= x-9
2. Now substitute the y in 5x + 4y=0 for x-9
5x + 4(x-9)= 0
5x + 4x-36=0
3. Now combine like terms
9x-36=0
4. Add 36 on both sides
9x= 36
5. Divide each side by 9
6. X= 4
7. Now substitute the x in x-y=9 for 4
4-y=9
8. Subtract 4 on both sides
-y= 5
9. Divide everything by -1
10. Y= -5
11. Your answer is x= 4 and Y= -5 or (4,-5)
5 0
4 years ago
Find the value of 3a-4b if a=-2 and b=1
iVinArrow [24]
Hey there!
Let's plug in our values:
3(-2) - 4(1) =
-6-4 = 
-10.
Hope this helps!
8 0
3 years ago
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