For this case we have that by definition, the standard form of a linear equation is given by:

By definition, if two lines are perpendicular then the product of their slopes is -1. That is to say:

We have the following point-slope equation of a line:

The slope is:

We find the slope
of a perpendicular line:

Thus, the equation is of the form:

We have the point through which the line passes:

Thus, the equation is:

We manipulate algebraically:

We add 3 to both sides of the equation:

We multiply by 2 on both sides of the equation:

We subtract 3x on both sides:

We subtract 12 from both sides:

ANswer:

Answer:
9
Step-by-step explanation:
Let the equation of a parabola be
= 4ax.
Then , focal length of the parabola is a.
As , (0,0) is the vertex and its focus is (a,0)
Thus, focal length comes out to be a.
Here,
a is given as 9 units .
Thus focal length of the parabola, d, equals to 9 units
47/5=9.40
9*5=45
47/5= 9 2/5
Answer:
D) 171 cm²
Step-by-step explanation:
You don’t actually need to decompose it. You could just do it as a trapezoid:
(15+23)/2=19
19x9=171
If you want to decompose it into 2 triangles and a rectangle:
10=15x9=135
1/2(3)(9)=13.5
1/2(5)(9)=22.5
135+13.5+22.5=171 also
It is 12 - 2/3 = 18, then solve :)
hope that helps :D