Answer:
Step-by-step explanation:
(-4,8) & ( -4,2)

= (-4,5)
Im a bit rusty but i believe the characters are 数学(translates to "Mathematics") and is pronounced "shuxue"
Answer:
17°
Step-by-step explanation:
73°= EGB
EGB+ x° = 90°
so x° = 90°-73° =17°
Answer:
80%
Step-by-step explanation:
out of 20, 1 would be 5%
4 = 20%
100% - 20% = 80%
Answer:
D
Step-by-step explanation: i believe it is D