14.
the vertices of almn are l(7,4), m(7,16), and
n(42, 4).
a. find the length of each side of the triangle.
b. what is the perimeter of the triangle?
c. what is the area of the triangle? explain how
you determined your answer.

the least common denominatore of 7 and 2 is 9

step-by-step explanation:

7+2=9

the answer is a

step-by-step explanation:

21/58.

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5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116