Simplify (10 ÷5)x 3 i need the answer and explaination maybe thankss

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation