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2 years ago

What is the answer to this equation : x+5=3x−1

Mathematics

2 answers:

Tresset [83]2 years ago

7 0

Answer: x = 3

Step-by-step explanation:

x+5 = 3x-1

+1 +1

x+6 = 3x

-x -x

6 = 2x

/2 /2

3 = x

zubka84 [21]2 years ago

7 0

Answer:

x-3x=-1-5

-2x=-6

-2x/-2=-6/-2

x=3

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2 years ago

Lines 3x-2y+7=0 and 6x+ay-18=0 is perpendicular. What is the value of a?

BlackZzzverrR [31]

Answer:

$\boxed{\sf a = 9 }$

Step-by-step explanation:

Two lines are given to us which are perpendicular to each other and we need to find out the value of a . The given equations are ,

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Step 1 : Convert the equations in slope intercept form of the line .

$\sf\longrightarrow y = \dfrac{3x}{2} +\dfrac{ 7 }{2}$

and ,

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Step 2: Find the slope of the lines :-

Now we know that the product of slope of two perpendicular lines is -1. Therefore , from Slope Intercept Form of the line we can say that the slope of first line is ,

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