Answer:
-30
Step-by-step explanation:
1) Remove unnecessary parenthesis:
-20-10
2) Calculate the difference:
-30
Answer:
first graph is not a function, second graph is a function, 3rd is not enough information, 4th is a function, 5th is not a function, 6th is a function
Step-by-step explanation:
<em>Complement</em> = 90-x
<em>Supplement</em>=180-x
180-x=4(90-x)+6
180-x=360-4x+6
3x=360-180+6
3x=186
x=186/3
x=62
A and D.....................
A because the Arabic’s creates the nunber syste