Answer:
D. -10
Step-by-step explanation:
The sum of a triangle = 180°, therefore,
64° + 63° + x + 63 = 180°
Add like terms
x + 190° = 180°
Subtract 190 from each side
x + 190 - 190 = 180 - 190
x = -10
23 and 29 are the only 2 prime numbers from 20 to 30
It’s B or D , im not that good but I don’t know , so try your best or take educated guess ( or ask a parent )
