Y is same as the missing angle, the triangle need to equal to 180 so if you add 20 to 60 it equal to 80
use 180 to subtract to 80 you will get the missing x, x=80
Is their suppose to be a picture ?
Triangle SET is similar to triangle SAR, so corresponding sides have the same ratio. This means
... ST : SR = ET : AR = 8.19 : 6.37
Then ST : TR = 8.19 : (6.37+8.19) = 8.19 : 14.56
Using division symbols, this is
... ST/TR = 8.19/14.56
Multiplying by TR gives
... ST = TR×(8.19/14.56) = 20.8×8.19/14.56
... ST = 11.7
Answer:
, or 10/3
Step-by-step explanation:
4/3 ÷ 2/5 = 4/3 × 5/2 = 20/6 =