Answer:
There is no solution
Step-by-step explanation:

subrtact 1/4 X from each side
-13=13/4 is not true, so no solution
Question 1
There are 5 letters (B, O, K, E, R) and there is a total of 10 letters to make up the word.
There are

ways of arranging the letters, which equal to 210 ways
Question 2
There are seven swimmers in total.
There are

ways of choosing the first winner, which is 7 ways
There are

ways of choosing the second winner, which is 6 ways
There are

ways of choosing the third winner, which is 5 ways
There are 7×6×5=210 ways of choosing first, second, and third winner
Question 3
The probability of eating an orange and a red candy is

×

, which equals to

The probability of eating two green candies is

×

which equals to
Answer:
equation: 8-n=13
answer: n = 21
Step-by-step explanation:
Im guessing 3 i really dont know.. i dont understand what it means by 4 channels.