Step-by-step explanation:
(Explanation is above)
Answer:
5=1
10=2
15=3
Step-by-step explanation:
You divide the amount of seconds by 5.
5/5 =1
10/5 =2
15/5 =3
Answer:
$21.00
Step-by-step explanation:
1(x+3)+x=45
x+3+x=45
x+x=42
2x=42
x=21
A - b is NOT always natural. Eg 4 - 7 = -3 therefore not in the natural number set.
ab is always natural
a/b is NOT always natural. Eg 4/7
So the answer to the question is (b) only II must be a natural number answer.
