The answer is b. the correct thing to say is "<span>If the diagonals of a quadrilateral bisect each other, then the quadrilateral is a Rectangle."</span>
Answer:

Step-by-step explanation:
Solve for the value of
:

-Take
and add it to
:


-Add both sides by
:


-Divide both sides by
:


Thus, the value of
is
.
Answer:
Perimeter of the rectangle=
Step-by-step explanation:
The perimeter of the rectangle with the given coordinates is the sum of its all four sides:
Let the points be A(1,-4), B(1,6), C(3,-4) and D(3,6)
Finding the sides of the rectangle using the Distance formula:
AB=

BC

CD=

AD=

Perimeter of the rectangle=AB+BC+CD+AD
=
Perimeter of the rectangle=
Draw a diagram
assuming you are directly over the base of the tree
we need to find the ratio between the adjacent angle and oposite angle
adjacent angle is the disatnce from frisbee to base of tree
oposite angle is 50ft
so
tan=oposite/adjacent
tan(60°)=50/?
?tan(60°)=50
?=50/tan(60°)
use your calculator
?≈28.8675
so about 29ft away from the base of the tree is the frisbee