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4 years ago

What is n. ... 12+9=n+12

Mathematics

2 answers:

emmasim [6.3K]4 years ago

7 0

N is equal to 9 because the 12’s cancel out leaving the 9

Verdich [7]4 years ago

7 0

The answer has to be nine couldn’t be no other way

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Which equation in point-slope form describes the line through points (4, –4) and (1, 2)?

IRINA_888 [86]

Step-by-step explanation:

Given points (4 , -4) and ( 1, 2)

First calculating slope (m) 

=( y2 - y1) /( x2 -x1) 

= ( 2 + 4) / (1-4)

= 6/ -3

= -2

Now

The equation in point slope form

y - y1 = m ( x - x1) 

y + 4 = -2 ( x - 4)

y + 4 = -2x + 8

2x + y - 8 + 4 = 0

2x + y -4 = 0 which is the required equation 

6 0

3 years ago

the perimeter of an isosceles triangle is 45. find the length of the third side if each of the equal sides is 14cm long

77julia77 [94]

Answer:

17cm

Step-by-step explanation:

The two equal sides are 14cm long so 45 - 14 - 14 = 17

8 0

3 years ago

PLSSS HELP IF YOU TURLY KNOW THISS

dangina [55]

Answer:

450.19 ×10 and 7 as the index

6 0

3 years ago

The coordinates of point J are (-7, 2), and the midpoint of JK is at L (3, 5). What are the coordinates of point K?

sweet [91]

Answer:

coordinates

( - 2, 9)

( 1, 3 )

Step-by-step explanation:

( 2, - 6)

6 0

3 years ago

find the point-slope equation of the line perpendicular to the line y=2x+5 passing through the point (1,4). (please include solu

pishuonlain [190]

First off, let's keep in mind that perpendicular lines have negative reciprocal slopes, hmmm so what's the slope of y = 2x + 5?

well, notice, that equation is in slope-intercept form, thus $\bf y=\stackrel{slope}{2}x+5$ .

$\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}}
{2\implies \stackrel{slope}{\cfrac{2}{1}}\qquad \qquad \qquad \stackrel{reciprocal}{\cfrac{1}{2}}\qquad \stackrel{negative~reciprocal}{-\cfrac{1}{2}}}$

so, we're really looking for the equation of a line whose slope is -1/2 and runs through 1,4.

$\bf (\stackrel{x_1}{1}~,~\stackrel{y_1}{4})\qquad \qquad \qquad 
slope = m\implies -\cfrac{1}{2}
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-4=-\cfrac{1}{2}(x-1)$

7 0

3 years ago