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MissTica
3 years ago
9

Help me pleaseeeeeeee

Mathematics
1 answer:
slamgirl [31]3 years ago
5 0
Slope Formula: m= \frac{ y_{2} }{ x_{2} }  -  \frac{ y_{1} }{ x_{1} }

I am going to show you how to do this on problem 6, and you will do the rest of the problems. 

Here are the steps to solving problem 6

Step 1) Substitute the coordinates into the slope formula

\frac{-1-2}{-18-(-8)}

Step 2) Now Lets simplify the denominator, so we don't have two Subtractions symbols.

\frac{-1-2}{-18+8}

Step 3) Simplify

\frac{-1-2}{-18+8} =  \frac{-3}{-10}

Step 4) We can still simplify more

\frac{-3}{-10} =  \frac{3}{10}

Hope This Helps ... Good Luck

[The reason I didn't do all of them is because you need to know how to do them. Trust me later on knowing these is going to be very handy.]

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Alenkasestr [34]

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\left[\begin{array}{ccc}1&1\\2&3\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] =\left[\begin{array}{ccc}8\\36\end{array}\right] \\\\\left[\begin{array}{ccc}x+y\\2x+3y\end{array}\right] =\left[\begin{array}{ccc}8\\36\end{array}\right]\\.\qquad\qquad\Downarrow\\\left\{\begin{array}{ccc}x+y=8&|\text{multiply both sides by (-2)}\\2x+3y=36\end{array}\right

\underline{+\left\{\begin{array}{ccc}-2x-2y=-16\\2x+3y=36\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad y=20\\\\\text{Put the value of y to the firast equation:}\\\\x+20=8\qquad\text{subtract 20 from both sides}\\x=-12\\\\\boxed{(-12,\ 20)}

8 0
3 years ago
Cuanto es 3/2 en una docena de huevos?
Nady [450]
Mejor respuesta
equivale a doce unidades, por ejemplo:
tengo 12 huevos = tengo una docena de huevos, pero tambien se pueden acumular, por ejemplo:
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y para sacar las docenas solo divides el numero o las unidades entre 12
UnDeR · hace 7 años
8 0
3 years ago
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