Answer:
B
Step-by-step explanation:
A is missing a combination AR and has repeats such as AG and GA. Since the order of the sides doesn't matter, AG and GA are the same thing.
C is missing many combinations, it only has 4
D has two of the same sides. The question states "you can choose two <em>different </em>sides" so something like AA is not an option
We can use the process of elimination to conclude the answer is B.
Answer:

Product of length and width=
Step-by-step explanation:
The product of the length and width of the rectangle is called the area of the rectangle.
Area of the rectangle= 

Area of the rectangle= 

The product of the Length and Width of the rectangle is :
i.e area of the rectangle.
The angles of a triangle always add up to 180°
90+45+50=185
No triangles can be constructed
That is in standard form except the -7 would be written as a power next to the 10. As an ordinary number it is 0.000000475
Let's write the parametric line
(x,y,z) = (0,2,8) + t(5,-1,4)
(5,-1,4) is called the direction vector of the line. It's normal to the plane
5x - y + 4z = constant
We get the constant by substituting the point (3,0,7),
5x - y +4z = 5(3) - 0 + 4(7) = 43
5x - y +4z = 43