someoneunknown10 someoneunknown10

19-01-2021
Mathematics

contestada

a. m∠ADB = (7x + 27)° Find x .
b.BC= (3y – 7),BD= (y + 3). Find y.
AD is a perpendicular bisector of BC.
x = ___
y = _
PLEASE HELP):

a mADB 7x 27 Find x bBC 3y 7BD y 3 Find y AD is a perpendicular bisector of BC x y PLEASE HELP class=

Respuesta :

akposevictor akposevictor

24-01-2021

Answer:

x = 9

y = 12

Step-by-step explanation:

✔️m<ADB = 90°

7x + 27 = 90

7x = 90 - 27

7x = 63

Divide both sides by 7

x = 9

✔️BC = 2(BD)

3y - 7 = 2(y + 3)

3y - 7 = 2y + 6

Collect like terms

3y - 2y = 7 + 6

y = 12

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