Answer:

Its a right angle triangle so trigonometry is used.
a is the hypotenuse, b is the adjacent.
Use sin to find a. Use tan to find b.
7^2+5^2= 74 now you have to square root 74 which is 8.60233 or 8.6
Answer:
d
Step-by-step explanation:
Andre : Anything less than -100, for example -150
-150<-100
|-150|=150
Han: Anything between -100 & 100, for example 50
50> 100
|50|= 50
Lin: 100 or -100,
100> -100
|100|=100
or
-100=-100
|-100|=100
Answer:
Domain: from -6 to 6, inclusive
Range: from -6 to 6, inclusive
Step-by-step explanation:
It's a circle centred at origin with radius 6