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cupoosta [38]
3 years ago
14

Last Friday Stefan had $35. Over the weekend, his parents gave him some money for

Mathematics
1 answer:
Usimov [2.4K]3 years ago
8 0

Answer:

35+x=47

Step-by-step explanation:

let x be the money that his parents give him for washing the car.

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Please help with these questions thank youu!!​
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#1

\\ \rm\Rrightarrow 2y=x-4

\\ \rm\Rrightarrow y=x/2-2

  • m=1/2

Parallel lines have equal slope

Equation in point slope form

\\ \rm\Rrightarrow y-4=1/2(x-1)

\\ \rm\Rrightarrow 2y-8=x-1

\\ \rm\Rrightarrow x-2y+7=0

#2

\\ \rm\Rrightarrow 1/2y-3x=2

\\ \rm\Rrightarrow 1/2y=3x+2

\\ \rm\Rrightarrow y=6x+4

  • m=6

Parallel lines have equal slope

Equation of line

\\ \rm\Rrightarrow y-6=6(x+2)

\\ \rm\Rrightarrow y-6=6x+12

\\ \rm\Rrightarrow 6x-y+18=0

#3

\\ \rm\Rrightarrow 1/k x+5=3y\implies y=x/3k+5/3

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\\ \rm\Rrightarrow y=(2/k+3)x-6/(k+3)

  • m2=2/k+3

Slopes remain same

\\ \rm\Rrightarrow \dfrac{1}{3k}=\dfrac{2}{k+3}

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\\ \rm\Rrightarrow k=3/5

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3 years ago
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