Answer:
The perimeter of the Rectangle JKLM is 32 unit.
Step-by-step explanation:
Consider the provided coordinates.
Rectangle JKLM: J(-3, 8), K(-3,-1), L(4, -1), M(4,8)
First plot the points as shown in figure:
The required figure is shown below:
Now find the distance between JK by using the distance formula.
Therefore, the length of JK is 9 unit.
Now find the length of the side JM
Therefore, the length of JM is 7 unit.
The perimeter of rectangle is: 
Therefore,
Hence, the perimeter of the Rectangle JKLM is 32 unit.
Answer:
y=-9x-1
Step-by-step explanation:
since it is perpendicular, the slope must be the opposite reciprocal (-9x) and now we plug the coordinates in, -1=0+b, b is -1
Answer:
Step-by-step explanation:
The figure is a cube
The surface area of a cube is equal to
where
b is the length side of the cube
In this problem we have
substitute
<h3><u>Answer</u> :</h3>
It is clear from the diagram that,
⇒ (2x - 5) + (x + 5) = 180
⇒ (2x + x) + (5 - 5) = 180
⇒ 3x + 0 = 180
⇒ x = 180/3
⇒ x = 60°
◈ From the geometry of figure,
⇒ ㄥ6 = (2x - 5)
⇒ ㄥ6 = (2×60 - 5)
⇒ ㄥ6 = 120 - 5
⇒ <u>ㄥ6 = 115°</u>
