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Vedmedyk [2.9K]
3 years ago
11

4x +2y = 12 -4x + 5y= -5

Mathematics
2 answers:
Blababa [14]3 years ago
5 0
4x+2y=12 \\
\underline{-4x+5y=-5} \\
2y+5y=12-5 \\
7y=7 \\
y=\frac{7}{7} \\
y=1 \\ \\
4x+2y=12 \\
4x+2 \times 1=12 \\
4x+2=12 \\
4x=12-2 \\
4x=10 \\
x=\frac{10}{4} \\
x=\frac{5}{2} \\
x=2 \frac{1}{2} \\ \\
\boxed{(x,y)=(2 \frac{1}{2}, 1)}
bearhunter [10]3 years ago
3 0
<u>Please, look at photo :))

-Good luck !</u>

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Eloise made a list of some multiples of 8/5 write 5 fractions that can be in Eloise list
alexgriva [62]
This question is asking for a list of fractions, that when you pull out common factors, they will all simplify back to the 8/5 fraction.

So if 2 is the common factor, you multiply the numerator and denominator by 2.

2: (8*2)/(5*2)= 16/10

3: (8*3)/5*3)= 24/15

4: (8*4)/(5*4)= 32/20

5: (8*5)/(5*5)= 40/25

10: (8*10)/5*10)= 80/50

Eloise's Potential List:
16/10, 24/15, 32/20, 40/25, 80/50

If you simplify any of these fractions above, you will get 8/5 again.

To work backwards:
80/50: 10 goes into 80, 10 goes into 50= 8/5

16/10: 2 goes into 16, 2 goes into 10= 8/5

Hope this helps! :)
4 0
4 years ago
Tiffany's allowance is reduced $1.25 every time she forgets to clean her room. If she forgets to clean her room 7 times this mon
Katen [24]

Answer:

8.75

Step-by-step explanation:

1.25(7)= 8.75

5 0
3 years ago
Read 2 more answers
Help me please thanks :)
Lunna [17]
The median is 6
the mode is 7
and the mean is 22
5 0
3 years ago
How do I make a the subject?<br><br> S= a/4 + 8u
Crazy boy [7]
S= a/4 + 8u

S - 8u = a/4 (First you subtract 8u from both sides)

4(S - 8u) = a ( Then you multiply both sides by 4)

Final answer:
4(S - 8u) = a
8 0
3 years ago
20 points if you help me solve, this is due tmr.<br><br> 21(2 – x) + 12x = 44
alekssr [168]

Answer:

Expand the 21(2-x)=42-21x

then you add 12 x with 42-21x

making it 42-9x=44

hence,

-9x= 2

9x= -2

x=  - 2/9

hope this helps.      :)

8 0
3 years ago
Read 2 more answers
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