Answer:
Step-by-step explanation:
1. 520/13=40
140/7=20
40*20=80
2. 300*150=45000
45000*6=270000
3. 230-70*2=90
90/2=45 (width)
70*45=3150(area)
Answer:
• It is possible to divide the seventh graders into teams of equal sizes.
,
• 13 students should be on each team.
Explanation:
The seventh grade of Wilson consists of three classes; one with 28 students, one with 29, and one with 34. Therefore, the total number of students in seventh grade is:

He wants each team to have between 4 and 8 students.

Therefore:
• It is possible to divide the seventh graders into teams of equal sizes.
,
• 13 students should be on each team.
Answer:
-19i + 26j
Step-by-step explanation:
-3 (5i - 6j) + 2 (-2i + 4j)
Distribute/multiply the -3 to everything in the parentheses
-15i + 18j + 2 (-2i + 4j)
Distribute/multiply the 2 to everything in the parentheses
-15i + 18j -4i + 8j
Combine like terms
-19i +26j