A school librarian ordered new books for the library. Of the new books ordered 1/3 are science and 2/5 are biography, and the rest of the books are friction. What fraction of the book ordered are friction?

4/15

Step-by-step explanation:

1/3=5/15

2/5=6/15

6+5=11

15-11=4

4/15 books a fiction

1. 34

2. 268

3. x=14.4

step-by-step explanation:

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