A boy has 6 red , 5 yellow and 2 green marbles. In how many ways can the boy arrange the marbles in a line if all marbles have different sizes?

The boy can arrange them in 2 different ways

Step-by-step explanation:

By color '

By size ; mass

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

560

hope this : )