Where does the number 13 come from in this problem. About dory and karly?

Mathematics

1 answer:

DochEvi [55]2 years ago

6 0

Where is the problem?

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Simplify the expression<br> (-1-3i)(-6-i)

Ivan

(-1-3i)(-6-i)
=6+i+18i+3i^2
=3i^2+19i+6. Hope it help!

7 0

2 years ago

Find the equation of a line containing the given point and slope (10,5); m=9/20

ohaa [14]

$\bf \begin{array}{lllll}
&x_1&y_1\\
% (a,b)
&({{ 10}}\quad ,&{{ 5}})
\end{array}
\\\\\\
% slope = m
slope = {{ m}}= \cfrac{rise}{run} \implies \cfrac{9}{20}
\\\\\\
% point-slope intercept
y-{{ y_1}}={{ m}}(x-{{ x_1}})\implies y-5=\cfrac{9}{20}(x-10)\\
\left. \qquad \right. \uparrow\\
\textit{point-slope form}
\\\\\\
y-5=\cfrac{9}{20}x-\cfrac{9}{2}\implies y=\cfrac{9}{20}x-\cfrac{9}{2}+5\implies y=\cfrac{9}{2}x+\cfrac{1}{2}$