this is answer for number 4
3.5x + 5.5x + 6 = 51
9x = 51 -6 = 45
x =45/9
x = 5 people
answer for number 5 (i assume x is the number)
5x -18 -4x = -36
x = -36 + 18
x = -18
Answer:
Step-by-step explanation:
Let w represent width of the rope-off section.
We have been given that a manager needs to rope off a rectangular section for a private party the length of the section must be 7.6 m the manager can use no more than 28 m of the rope.
We will use perimeter of rectangle formula to solve our given problem. We know that perimeter of a rectangle is equal to 2 times the sum of length and width.
Upon substituting our given values, we will get:
Since the manager can use no more than 28 m of the rope, so perimeter of rope-off section should be less than or equal to 28 meters.
We can represent this information in an inequality as:
Therefore, our required inequality would be .
Let us find width as:
Therefore, the width of the rope-off section should be less than or equal to 6.4 meters.
If that point lies on the graph of y, then one side will equal each other.
Let x = 3 and y = -5
-5 = -2(3) + 1
-5 = -6 + 1
-5 = -5
The left side = the right side.
So, the given point lies on the given line.