3 years ago

Hello please help i’ll give brainliest

Mathematics

1 answer:

Alborosie3 years ago

5 0

Answer:

its d

Step-by-step explanation:

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Find the constant rate of change.

Aleonysh [2.5K]

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Elimination method: ax+by=r, -bx+cy=s

Alex17521 [72]

$\left[\begin{array}{ccc}ax+by=r\\\\-bx+cy=s\end{array}\right]$

Isolate x for $ax+by=r$

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Subsititute $x= \frac{r-by}{a}$

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$r=- \frac{as-acy-b^2y}{b} ; a \neq 0;b \neq 0$

For x : $\frac{r-by}{a}$

Subsititute r = $- \frac{as-acy-b^2y}{b}$

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$x = \frac{cy-s}{b}$

The solutions to the system of equations are:

$r= -\frac{as-acy-b^2y}{b}$ and <span> $x = \frac{cy-s}{b}$
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A pet store has 9 puppies and 48 kittens.

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