Answer:
a = -0.3575
Step-by-step explanation:
The points A and D lie on the x-axis, this means that they are the x-intercepts of the parabola, and therefore we can find their location.
The points A and B are located where

This gives


Now given the coordinates of A, we are in position to find the coordinates of the point B. Point B must have y coordinate of y=2 (because the base of the trapezoid is at y=0), and the x coordinate of B, looking at the figure, must be x coordinate of A plus horizontal distance between A and B, i.e

Thus the coordinates of B are:

Now this point B lies on the parabola, and therefore it must satisfy the equation 
Thus

Therefore


Answer:
i dont know
Step-by-step explanation:
just working
Answer:
scale factor = 1.2
Step-by-step explanation:
To determine the scale factor, calculate the ratio of the length of the second rectangle to the length of the first rectangle. The corresponding ratio of widths should also equal the same ratio.
scale factor =
=
= 1.2
Answer:
2+27x = 110°
Step-by-step explanation:
Since both lines are parallel, the angles are same side interior angles, which mean they both add up to 180°.
(16x+6)+(2+27x) = 180°
Move them to each side:
16x+27x = 180-6-2
43x = 172°
x = 4°
Verify:
110°+70° = 180°