Answer:
All the others are 90 degrees too
Step-by-step explanation:
In a parallelogram opposite angles are congruent. Also in a quadrilateral the sum of angles is 360 degrees. since their are two pairs of congruent angles you could make an equation and it would look like this: 180+2x =360. x would be 90 making every angle 90 degrees
Answer:
n=80
Step-by-step explanation:
n/4=20
(n/4=20)4 . to get rid of the denominator u multiply by 4 on both sides
n=80
11. 18=10+x
x=8
8/4= 2 hours (because there are 8,15 min periods, 4,15 min per 1 hour)
12. 1.44 x 10⁸
13. 2 x 10¹²
( 1, -1 )
( -2, 1 )
&
( -4, 2 )
I think it is 3x if I’m not mistaken