Hi!
This is definitely a trapezoid, as it has two equal sides and two inequal sides. It's not a parallelogram, because two sides eventually intersect. It is a quadrilateral, because it has four sides.
None of the others apply here.
If you found this especially helpful, I'd appreciate if you'd vote me Brainliest for your answer. I want to be able to assist more users one-on-one, as well as to move up in rank! :)
Answer:
he has to make a sale of $750
Step-by-step explanation:
first job pays $880 per week
second job pays $790 per week
amount first job is paying more=$(880-790)
=$90
therefore,12% should $90 if he wants to make an equal amount as the first job is paying therefore,sale he has to do
12% of x=$90
12/100*x=$90
x=90*100/12
x=9000/12
x=$750
thus he has to make a sale of $750 to earn a 12% comission of $90
To find x, first we'll split the triangle in two right triangles.
The first triangle will be the one with sides (8,x+4,y) and the second triangle will be the one with sides (12,2x+1,y).
As you can see, these two triangles share the side 'y'.
To solve we'll do the following; first solve for 'y' by applying the Pythagorean theorem in the second triangle, and finally solve for 'x' applying Pythagorean theorem in the first triangle.
From the second triangle (12,2x+1,y) we solve for 'y' by writing:

Now that we know 'y^2' we apply Pythagorean Theorem in the first triangle (8,x+4,y)


Now you solve the quadratic equation, you'll get a positive and negative value; as this are lengths, you take the positive and get:
Answer:
(-6,-2)
Step-by-step explanation:
the solution is -6,-2 because y comes before x, and the line crosses in the negative axis.
I think that was what you were asking. I hope.