Answer:

Step-by-step explanation:
Note that
sin135° = sin(180 - 135)° = sin45° =
= 
Step-by-step explanation:
the value of x is 20 that's it good luck
Xy = 6
x = 2
2y = 6
y = 6÷2
y = 3
x + y = (2) + (3) = 5
Answer:
7
Step-by-step explanation:
By Basic proportionality theorem:

Answer:
the answer is 2.1
Step-by-step explanation:
using a calculator:
1. type in 4.2
2. multiply 4.2 by 1/2
3. the answer will then be shown as 2.1