Answer:
the fifth number is 11
Step-by-step explanation:
8,11,13 and 17, x
the mean is =12 ( which means the sum of the terms divided by the numbers of terms )
to find the mean :
(8+11+13+17+x)/5 =12
5*12=49+x
60-49=x
x=11
Answer:
david was. 9 seconds faster than Justin.
Step-by-step explanation:
8.1-7.2= .9
We can simplify 15/3 to 5.
N/6 = 5. Then multiply both sides of the equation by 6, giving us N = 30.
12-15=3 ............................................................
Answer:
The given equation is
y =
x
→ 
reciprocating both sides, we get
→ 
............(1)
→ Here x and y are Directly proportional to each other.
which means ,
→ x = k y , where k is constant of proportionality.
Or , 
= k ............................(2)
Equating (1) and (2),
k = 
