Answer:
Mr.Lin's present age is 30 years now. His son is 8 years old now.
Step-by-step explanation:
Let L = Mr.Lin's present age,
S = his son's present age.
First equation is
L + S = 38. (1)
The second equation is
L + 3 = 3*(S+3) (2) ("In three years' time, Mr.Lin will be three times as old as his son.")
From (1), express S = 38-L and substitute it into (2). You will get
L + 3 = 3*((38-L)+3), or
L + 3 = 114 - 3L + 9,
4L = 114 + 9 - 3,
4L = 120,
L = 30.
Answer:
The slope is: 
Step-by-step explanation:
The equation for slope is:
Point 1: -3=
, -2=
Point 2: 5=
, 4=
4-(-2)=6
5- (-3)=8
6/8=3/4
Are you looking for c? if so c=5
Answer:
no
Step-by-step explanation:
It should be less then or equal too, seeing as they want to reach all the way across the room.
5:4
5+4=9
198/9=22
22*5=
110:88
there are 110 boys
