3 years ago

What are the steps for the three indices law

Mathematics

1 answer:

gladu [14]3 years ago

8 0

Answer:

First law- multiplication

Second law- division

Third law- brackets

Step-by-step explanation:

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4 years ago

Which word best describes the degree of overlap between the two data sets?

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Hey there! :D

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2 years ago

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3 years ago

Find the equation of a line parallel to the line 2x-y-9=0 and passing through the point of intersection of the lines 5x+y+4=0 an

Cerrena [4.2K]

Answer:

$y=2x-3$

Step-by-step explanation:

1. Using the point of intersections, we use the substitution method to find the coordinates of the line parallel to $2x-y-9=0$

$5x+y+4=0$

$y= -4-5x$

substituting the value of y in $2x+3y=1$ :

$2x +3(-4-5x)=1\\\\2x-12-15x-1=0\\-13x=13x\\x= \frac{13}{-13}= -1$

substituting x=-1 in y= -4-5x:

$y= 1$ (upon solving, you should get this)

$(x,y)= (-1,1)$

2. Using y=mx+c and making y the subject of the formula 2x-y-9=0 and using the coordinate we found earlier, we will find the equation of the parallel line. (We make y the subject of the formula to find the gradient)

$2x-y-9=0\\2x-9=y\\y= 2x-9$

$y= mx+c\\$

-1= 2 x 1 +c

-3=c

y= 2x-3

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3 years ago