1/2(2.5x)=40
2.5x=80
x=32
the number is 32
9514 1404 393
Answer:
8
Step-by-step explanation:
The number of days has gone down by a factor of 15/24. The number of workers is inversely proportional, so must increase by a factor of 24/15 = 8/5.
(5 workers) × (8/5) = 8 workers
8 workers are needed to complete the project in 15 days.
Answer:
-x + 5y + 7
-This should be the answer
Answer:
1. 4
2. 35
3. Her yard is a rectangle. She needs a 3000 feet of fence.
Step-by-step explanation:
1. The length of one side is 5 - 3 = 2 (subtract the y values)
The length of the other side is 7 - 3 = 4 (subtract the x values)
So the area is 2*4 = 8
2. The length of one side is 6 - 3 = 5 (subtract the x values)
The length of the other side is 7 - 0 = 7 (subtract the y values)
So the area is 5 * 7 = 35
3. The shape of her yard is a rectangle.
The length of one side of the fence is 5 - 0 = 5 units (subtract the x values)
The length of the other side of the fence is 10 - 0 = 10 units (subtract the y values)
The perimeter would be
(2*5) + (2*10)
= 30 units
Since the distance between each unit plotted is 100 feet, the total amount of fence needed would be
30 * 100
= 3000 ft
