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ArbitrLikvidat [17]
3 years ago
10

What is 3x-8-8x=42 answer nowwwwwwwwwwwwwwwwwwwwwwwwwww

Mathematics
1 answer:
eimsori [14]3 years ago
4 0

The answer is x = -10

Explanation:

3x-8-8x=42

3x-8x = 42-8

-5x = 50 ---> do

x = -10

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-6x+2y=-18. -3x-2y=54
luda_lava [24]

Answer:

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Step-by-step explanation:

To solve this, we will need to set up a system of equations and get rid of a variable.

-3x - 2y = 54

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From this, we can see that the 'y' variables can be cancelled out if we add the two together. This means that we must add these equations to each other to cancel out the 'y' variables:

-3x - 2y = 54

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-------------------- +

-9x = 36

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Since we have solved for 'x', we can simply plug this value into an equation to find 'y'.

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6 0
3 years ago
A square piece of land is to be divided into 4 square quadrants of equal size. On a map, the entire piece of land measures 6 inc
Oksana_A [137]

Answer:

The scale of the map is inch = 20 feet.

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5 0
3 years ago
Can't figure it out!!
Zanzabum
\bf slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ f(x_2)}}-{{ f(x_1)}}}{{{ x_2}}-{{ x_1}}}\impliedby 
\begin{array}{llll}
average\ rate\\
of\ change
\end{array}\\\\
-------------------------------\\\\
f(x)= \cfrac{1}{x}  \qquad 
\begin{cases}
x_1=2\\
x_2=b
\end{cases}\implies \cfrac{f(b)-f(2)}{b-2}=-\cfrac{1}{10}
\\\\\\
\cfrac{\frac{1}{b}-\frac{1}{2}}{b-2}=-\cfrac{1}{10}\implies 
\cfrac{\frac{2-b}{2b}}{b-2}=-\cfrac{1}{10}\implies \cfrac{2-b}{2b}=-\cfrac{b-2}{10}
\\\\\\


\bf \cfrac{2-b}{2b}=\cfrac{2-b}{10}\implies 20-10b=4b-2b^2\impliedby cross-multiplying
\\\\\\
2b^2-4b-10b+20=0\implies 2b^2-14b+20=0
\\\\\\
b^2-7b+10=0\implies 
(b-2)(b-5)=0\implies b=
\begin{cases}
\boxed{5}\\
2
\end{cases}
8 0
3 years ago
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