Find mangle1 and mangle2. justify your answer.
2
1
55 degrees
mangle1equals
nothingdegrees by the
▼

mangle2equals
nothingdegrees by the
▼
alternate interior angles theorem.
same-side interior angles theorem.
side-side interior angles theorem.
vertical angles theorem.
corresponding angles postulate.

< 1=? by the< 2=? by the

i think it would be 42cm

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

c. side angle side. u shares the same sides