Answer:
Step-by-step explanation:
Sum of all angles of triangle = 180
39 + 102 + x = 180
141 + x = 180
Subtract 141 from both sides
x = 180 - 141
x = 39
(25-y) ^2-y^2=25
y=12
x=25-12
x=13
(13,12)
Answer: 20 weeks in 1 week
in 2 weeks 40
Step-by-step explanation:
This proves that the equation is true
Answer: 11+5=16
Step-by-step explanation: 14, 15, 16, 17 and 18
