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ivann1987 [24]
3 years ago
7

Find (−18)+(−25)+13 . −56 −30 20 −6

Mathematics
1 answer:
timama [110]3 years ago
7 0

Answer:

Step-by-step explanation:

-18 + (-25) + 13 =

-18 - 25 + 13 =

-43 + 13 =

-30 <====

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For the equation of the line expressed as Ax + By + C = 0, the value of the slope (m) is calculated by -A / B. For perpendicular lines, the slope of one should be the negative reciprocal of the other. From the choices given, the lines that are perpendicular is Option A. 
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⊰_________________________________________________________⊱

Answer:

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Step-by-step explanation:

\large\displaystyle\text{$\begin{gathered} \sf{Substitute \ the \ values \ into \ the \ formula \ y-y_1=m(x-x_1)} \\ \sf {parallel \ lines \ have \ same \ slopes, \ thus} \\ \sf{slope \ of \ the \ 2nd \ line = 3}\\ \sf{now \ substitute \ the \ values} \\ \sf {y-(-5)=3(x-4)}\\ \sf{y+5=3(x-4) (It's \ Point-Slope\;Form, \ see \ below \ for \ slope-intercept)}\\ \sf {y+5=3x-12} \\ \sf{y=3x-12-5} \\ \sf{y-3x-17} \end{gathered}$}}

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⊱_________________________________________________________⊰

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Step-by-step explanation:

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Therefore, by substitution, you can rewrite the identity as shown below:

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Simpliying, you obtain:

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The identity is verified.

6 0
3 years ago
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