louiesanicolep louiesanicolep

26-11-2020
Mathematics

contestada

Quadrilateral BCDE is a rhombus. What is DE?
D
с
9z
E
2+72
B

Quadrilateral BCDE is a rhombus What is DE D с 9z E 272 B class=

Respuesta :

jimrgrant1 jimrgrant1

26-11-2020

Answer:

DE = 81

Step-by-step explanation:

The sides of a rhombus are congruent , thus

9z = z + 72 ( subtract z from both sides )

8z = 72 ( divide both sides by 8 )

z = 9

Then

BC = 9z = 9 × 9 = 81

Since the sides are congruent, then DE = 81

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