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MrRissso [65]
3 years ago
15

Juanita is cutting a piece of construction paper in the shape of a parallelogram. Two opposite sides of the parallelogram have l

engths (5n − 6) cm and (3n − 2) cm. The third side measures (2n + 3) cm. What are the lengths of two adjacent sides of the parallelogram? 2 cm and 2 cm 4 cm and 7 cm 7 cm and 9 cm 13 cm and 19 cm
Mathematics
1 answer:
Tamiku [17]3 years ago
6 0

Answer:

 Second option: 4 cm and 7 cm.

Step-by-step explanation:

A Parallelogram is defined as a type of Quadrilateral, whose opposite sides are parallel and have equal lenght.

Since the opposite sides (5n-6)cm and (3n-2)cm have the same lenght, then:

5n-6=3n-2

Now you have to solve for "n":

Add 6 to both sides of the equation.

Subtract 3n to both sides of the equation:

5n-6+(6)-(3n)=3n-2+(6)-(3n)\\5n-3n=-2+6\\2n=4

Divide both sides of the equation by 2:

\frac{2n}{2}=\frac{4}{2}\\\\n=2

To know the lenght of two adjacent sides, susbtitute n=2 into the third side (2n + 3)cm and into one of the the sides that are opposite to eache other. Then:

(2(2)+3)cm=7cm\\\\(5(2)-6)cm=4cm

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