2 years ago

Please help, thanks if you do :)

Mathematics

2 answers:

slega [8]2 years ago

8 0

(2,3)
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grandymaker [24]2 years ago

5 0

Answer:

(2,3)

Step-by-step explanation:

substituting y we get 4.5x=9 so x=2, with this we can plug x back into one of the equations to solve for y, which is 3

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X+2y=12 <br> 3x-10y = 0<br><br> y=?<br> x=?

sergeinik [125]

$~~x+2y=12 \\ ~~3x-10y=0 \\
~------ \\~ -3/x+2y=12 \\ ~~~~~~3x-10y=0 \\ ------- \\ -3x-6y=-36 \\ ~~~~3x-10y=0 \\ +------- \\ ~~~~-16y=-36 \\ \\ ~~~~y= \frac{36}{16}\rightarrow \boxed{\frac{9}{4}} \\ \\$
$x+2. \frac{9}{4} =12 \\ \\ x+ \frac{18}{4} =12 \\ \\ \frac{4x+18}{4} =12 \\ \\ 4x+18=48 \\ 4x=30 \\ \\ x=\boxed{\frac{15}{2}}$

3 0

3 years ago

Read 2 more answers

During the month of February, Fabulous Feet Shoe Mart sold 30 pairs of red loafers. After an ad campaign to boost sales, they so

Natalija [7]

Answer:

20%

Step-by-step explanation:

To find the percent increase lets first find the increase.

36-30 = 6

Now divide the increase by the original amount

6/30 = 1/5 = 20%