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elena-14-01-66 [18.8K]
3 years ago
11

-3(x+n) = x what is x

Mathematics
1 answer:
svp [43]3 years ago
8 0

Answer:

x = -3n/4

Step-by-step explanation:

in order to  solve for x in this expression we would open the bracket with -3 according to BODMAS rule. then we would evaluate for the value of x

-3(x+n) = x what is x

-3x-3n= x

-3x = x + 3n

-3x -x = 3n

-4x = 3n

divide both sides by the coefficient of x which is -4

-4x/-4 = 3n/-4

x = -3n/4

therefore the value of x in the expression -3(x+n) = x is evaluated to be

x = -3n/4

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Kimberly makes a conjecture that the sum of two odd integers is always an even integer. Which choice is the best proof of her co
Gala2k [10]

Answer:

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You’re welcome ;)

7 0
3 years ago
the line joining A(a, 3) to B(2 -3) is perpendicular to the line joining C(10,1) to B. The value of a is?
RideAnS [48]
Well, first off, let's find what is the slope of BC

\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%   (a,b)
B&({{ 2}}\quad ,&{{ -3}})\quad 
%   (c,d)
C&({{ 10}}\quad ,&{{ 1}})
\end{array}
\\\\\\
% slope  = m
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\\\\\\
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\bf \textit{perpendicular, negative-reciprocal slope for slope}\quad \cfrac{1}{2}\\\\
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now, we know the slope "m" of AB is -2 then, thus

\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
%   (a,b)
A&({{ a}}\quad ,&{{ 3}})\quad 
%   (c,d)
B&({{ 2}}\quad ,&{{ -3}})
\end{array}
\\\\\\
% slope  = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
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\\\\\\
\cfrac{-6}{2-a}=-2\implies -6=-4+2a\implies -2=2a\implies \cfrac{-2}{2}=a
\\\\\\
-1=a
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Answer:

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Step-by-step explanation:

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