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3 years ago

2y + x + 7 = 0 how do i solve with substitution?

Mathematics

2 answers:

Jlenok [28]3 years ago

6 0

Answer:

x+2y=-7

Step-by-step explanation:

2y + x =-7

x+2y=-7

Vlada [557]3 years ago

3 0

When solving for x, set y to 0. When solving for y, set x to zero. You can just isolate the variables from there.

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Answer:

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Step-by-step explanation:

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Jonah and three of his friends are splitting the dinner bill equally among theme selves. There total bill came to be $86 before

Oksana_A [137]

Answer: Required expression: $\dfrac{[ (86) + 0.18 \times(86 ) + 0.06 \times (86 )]}{4}$

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Step-by-step explanation:

Given: Bill amount = $86

Tip percent = 18%

Sales tax = 6%

Now, total bill = (Bill amount ) + 18% of (Bill amount ) + 6% of (Bill amount )

= $[ (86) + 18% of (86 ) + 6% of (86 )]

= $[ (86) + 0.18 x(86 ) + 0.06 x (86 )]

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Each person need to pay= $\dfrac{\text{total bill}}{4}$

$=\dfrac{[ (86) + 0.18 \times(86 ) + 0.06 \times (86 )]}{4}\\\\=\dfrac{[ (86) (1+ 0.18 +0.06 )]}{4}\\\\=\dfrac{86(1.24)}{4}=\dfrac{106.64}{4}=26.66$

So, each person need to pay =$ 26.66

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