By definition of the binomial coefficient,

so we have

as required.
Answer:
set mary is x years old, and helen is y years old.
first sentence:x=2y
second one:4(y-8)=x+4
bring x=2y in 4(y-8)=x+4
=>4y-32=2y+4
=>2y=36
=>y=18
=>x=36
mary:36
helen:18
Number: 1111
1111/1111=1
1*0= 0
Now put 0 in the tenths place
01
Hope this Helped :)
Answer:
Geela would need 9 yellow parts
Explanation:
Originally, the Geela needed more yellow than red and the difference was 4 parts.
6-2=4 parts
4 parts + 5 parts of yellow = 9 yellow parts.
Answer:
£18
Step-by-step explanation:
Let
x = original price of the game
Increase in price = 1/2
New price = £27
x + 1/2x = £27
2x+x/2 = 27
3/2x = 27
x = 27 ÷ 3/2
= 27 × 2/3
= 54 / 3
x = £18
Therefore, the original price of the game is £18