Answer:
46 and 22
Step-by-step explanation:
let the father b (f) and d son is (s)
so
f=3s.....(1)
(f+10) +(s+10)=68 .... (2)
substitute f=3s in equation (2)
we have
(3s+10)+(s+10)=68
4s+20=68
4s=68-20
4s=48
s=12 .......(3)
substitute (3) in (1)
f=3*12
which f=36
in 10 year time
f+10 =46
s+10=22
Answer:
2±1\2x
Step-by-step explanation:
[4±x]1\2
we will start by opening the brackets
[4]1\2=2
[x]1\2=1\2x
2±1\2x
hope am right
Answer:
x<=5
Step-by-step explanation:
Two things
- direction its pointing is always how the sign will look like
- if the circle is shaded it will have an "or equals to" sign; if its blank, there is only the "greater/lesser" sign