3 years ago

Please help it's greatly apprecatied

Mathematics

1 answer:

Gala2k [10]3 years ago

3 0

Answer:

Step-by-step explanation: A on edge

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5 Ib equals how many oz

Snezhnost [94]

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4 years ago

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The slope-intercept form of a linear equation is y=mx + b, where x and y are

HACTEHA [7]

Answer:

m = $\frac{y-b}{x}$

Step-by-step explanation:

Given

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4 years ago

Solve 2x + 5y = 20; 3x - 10y = 37 by elimination. How do you do this? Thank-you!

mr Goodwill [35]

$\left\{\begin{array}{ccc}2x+5y=20&\text{multiply both sides by 2}\\3x-10y=37\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}4x+10y=40\\3x-10y=37\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad7x=77\qquad\text{divide both sides by 7}\\.\qquad\boxed{x=11}\\\\\text{Put the value of x to the first equation:}\\\\2(11)+5y=20\\\\22+5y=20\qquad\text{subtract 22 from both sides}\\\\5y=-2\qquad\text{divide both sides by 5}\\\\\boxed{y=-\dfrac{2}{5}}\\\\Answer:\ \boxed{x=11\ and\ y=-\dfrac{2}{5}}$