It’s 11 because -7 + 11 equals to 4.
U should have posted answers so we can choose between them
Answer:
38$
Step-by-step explanation:
If you add up 29 plus 38 you will get 17 for 8 plus 9 and 50 for 20 plus 30 add them up and get 67$.
Each student worked on 115 math problems.
Step-by-step explanation:
Given,
Problems solved in 4 hours = 8970
Number of students in competition = 78
As each student solved same number of problems, we will divide the total problems solved by number of students to find the amount of problems solved by one student.
Problems solved by one student =
Problems solved by one student = 115
Each student worked on 115 math problems.
Keywords: division
Learn more about division at:
#LearnwithBrainly