Answer:
Step-by-step explanation:
Given: expressions
To find: expression that denotes a rational number
Solution:
A number of the form 
where p and q are integers and 
is said to be a rational number.
Sum of a rational and irrational number is irrational.
In 
, 
is a rational number and 
is an irrational number
So, is not a rational number.
In 
, 
is an irrational number and 4 is a rational number
So, 
is not a rational number.
In 
, 
is a rational number
So, is a rational number
In 
, 
is a rational number and 
is an irrational number
So, is not a rational number.
Answer:
12x + 15y
Step-by-step explanation:
3 x 4x= 12x
3 x 5y = 15y
Answer:
4
Step-by-step explanation:
There are 4 board members and 3 committee members. You can solve this using combinations:
4C3 = 4!/(3!(4-3)!) = 4!/(3!1!) = 4
You can also solve this by recognizing that since there is one fewer committee spot than there are board members, there will be one possible committee excluding each of the 4 board members.
Given that Erica and AAron,are using lottery system to decide who will wash dishes every night.
They put some red and blue power chips and draw each one. If same colour, Aaron will wash and if not same colours Erica will wash
If the game is to be fair, then both should have equal chances of opportunity for washing.
i.e. Probability for Erica washing = Prob of Aaron washing
i.e. P(different chips) = P(same colour chips)
Say there are m red colours and n blue colours.
Both are drawing at the same time.
Hence Prob (getting same colour) = (mC2+nC2)/(m+n)C2
Probfor different colour = mC1+nC1/(m+n)C2
The two would be equal is mC2 +nC2 = m+n
This is possible if mC2 =m and nC2 = n.
Or m = 2+1 =3 and n =3
That for a fair game we must have both colours to be 3.
3,345 divided by 18 is 185.8333....The three goes on forever.
Steps:
Does 18 go into 3? No
Does 18 go into 33? Yes
How many times? 1
33-18= 15, and then you would bring down and keep doing what I did. Hope this helped!
