Answer:
Two straight lines with slopes m and m' are parallel when m = m'
Two straight lines with slopes m and m' are perpendicular when m × m' = - 1.
Step-by-step explanation:
Let us assume that the two non-vertical lines in the slope-intercept form are
y = mx + c ........... (1) and
y = m'x + c' ............ (2)
If those two lines are parallel then we can say the slope of them will be the same i.e. m = m'
Now, if given two straight lines (1) and (2) are perpendicular to each other and neither of them is parallel to the axes, then we can write m × m' = - 1. (Answer)
If a single ticket costs 40 dollars then the ten seats will generate the following
$40 x 10= $400
Step-by-step explanation:
<h2><em>Factor the </em><em>expression</em></h2>
<em>
</em>
<h2><em>Separate into possible cases</em></h2>
<em>
</em>
<h2><em>Solve the equation</em></h2>
<em>![n = 0[tex]n = 0 \: \: \: \: \: \: \: \: [tex]n = 0 \: \: \: \: \: \: \: \: 2n ^ 2 - 3n + 2 = 0](https://tex.z-dn.net/?f=n%20%3D%200%3C%2Fem%3E%3C%2Fp%3E%3Cp%3E%3Cem%3E%5Btex%5Dn%20%3D%200%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%3C%2Fem%3E%3C%2Fp%3E%3Cp%3E%3Cem%3E%5Btex%5Dn%20%3D%200%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%202n%20%5E%202%20-%203n%20%2B%202%20%3D%200)
</em>
<h2><em>Find the union</em></h2>
<em>![n = 0[tex]n = 0 \: \: \: \: \: \: [tex]n = 0 \: \: \: \: \: \: n = R](https://tex.z-dn.net/?f=n%20%3D%200%3C%2Fem%3E%3C%2Fp%3E%3Cp%3E%3Cem%3E%5Btex%5Dn%20%3D%200%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%3C%2Fem%3E%3C%2Fp%3E%3Cp%3E%3Cem%3E%5Btex%5Dn%20%3D%200%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20%20%5C%3A%20n%20%3D%20%20R)
</em>
<h2><em>there </em><em>for </em></h2>
<em></em>
<em>hope </em><em>it</em><em> help</em>
<em>#</em><em>c</em><em>a</em><em>r</em><em>r</em><em>y</em><em> </em><em>on</em><em> learning</em>
Q is 124 and 56 because it has to add up to 180 and sense r is also 56 degrees that means S is 68 degrees because the sum of each angle has to add up to 180 degrees
