1. If JK is formed by J(-7,-8) and K(1,4), determine if L(-9,5) lies on the perpendicular bisector.

L(-9,5)
R(1,4)
(-7,-8)
Part A
What elements do you need to show to confirm that Point L is on the
Perpendicular Bisector of JK?

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0