Mathematics: X+2y=12 3x-10y = 0 y=? x=?

X+2y=12 3x-10y = 0 y=? x=? - id21231007542303, mslamaya11

Ответ:

Bra1nPowers

02.02.2022

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

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Ответ:

sandersmakaylaovq5vu

02.02.2022

Mathematics

$x+2y=12|\cdot5\\
3x-10y=0\\\\
5x+10y=60\\
\underline{3x-10y=0}\\
8x=60\\
x=\dfrac{60}{8}=\dfrac{15}{2}\\\\
\dfrac{15}{2}+2y=12\\
15+4y=24\\
4y=9\\
y=\dfrac{9}{4}\\\\
\boxe{(x,y)=\left(\dfrac{15}{2},\dfrac{9}{4}\right)}$

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Ответ:

billydeck30

17.01.2023

Mathematics

The probability of choosing of the blue tile and flip a coin are

1. P(BT) = 1/7 = 4

2. P(H or T) = 1/2 = 1.5

Step-by-step explanation:

1. P(BT) = 1/7

P(BT) = 1/7 + 2/7+ 3/7 + 4/7 + 5/7 + 6/7 + 7/7 = 1 + 2 + 3 + 4 + 5 + 6 + 7 = 28/7

P(BT) = 4

2. P(H or T) = 1/2 + 2/2 = 1 + 2/2 = 3/2 = 1.5

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X+2y=12
3x-10y = 0

y=?
x=?

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