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3 years ago

PLeaseeee helpSolve the equation5(- 3x - 2) = ?

Mathematics

1 answer:

ddd [48]3 years ago

4 0

Answer:

answer is for x value 2/3

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3/4 + -2/3 in simplest term

balandron [24]

1/12 because first u find a common denominator of 12 then you get 9/12 + (-8/12) and then since one is negative and one is positive you have to subtract and you get positive 1/12

5 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

$\bf \begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
B&({{ 2}}\quad ,&{{ -3}})\quad 
% (c,d)
C&({{ 10}}\quad ,&{{ 1}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ y_2}}-{{ y_1}}}{{{ x_2}}-{{ x_1}}}\implies \cfrac{1-(-3)}{10-2}\implies \cfrac{1+3}{10-2}
\\\\\\
\cfrac{4}{8}\implies \cfrac{1}{2}$

now, a line perpendicular to that one, will have a negative reciprocal slope, thus

$\bf \textit{perpendicular, negative-reciprocal slope for slope}\quad \cfrac{1}{2}\\\\
slope=\cfrac{1}{{{ 2}}}\qquad negative\implies -\cfrac{1}{{{ 2}}}\qquad reciprocal\implies - \cfrac{{{ 2}}}{1}\implies \boxed{-2}$

now, we know the slope "m" of AB is -2 then, thus

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

6 0

3 years ago

Rewrite 8^6 • 8^4 in the form 8^n

Ede4ka [16]

Answer:

8^10

Step-by-step explanation:

Keep it as in power form. Note that the base is the same (8).

When the case is that the base is the same:

If multiplying, add the powers together.

If dividing, subtract the powers.

8^6 * 8^4 = 8^(6 + 4) = 8^10

8^10 is your answer.

5 0

3 years ago

Read 2 more answers

X/x-3 times x-1/3-x

Tema [17]

X-X^2/ (x-3)^2 try that I’m not 100% sure tho

8 0

3 years ago

Please help I will mark brainliest! For correct answers

Ivan

Answer:

it should be a,c,e,d

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

PLeaseeee helpSolve the equation5(- 3x - 2) = ?​

PLeaseeee helpSolve the equation5(- 3x - 2) = ?