Answer:
The area is changing at 2 m²/d.
Step-by-step explanation:
The area of a rectangle is given by:

Where:
l is the length
w is the width
We have that the length is increasing at a rate:

And the width is decreasing at a rate:
The change in the rectangle's area is the following:
When the length is 8 meters and the width is 18 meters we have:
Therefore, the area is changing at 2 m² per day.
I hope it helps you!
Answer:
W = 69.5 L = 109.5
Step-by-step explanation:
L = 3W-99
Perimeter = 2L + 2W
358 = 2(3W-99) + 2W
358 = 6W-198 + 2W
358 = 8W-198
556 = 8W
69.5 = W
- 358 = 2L+2W
- 358 = 2L + 2(69.5)
- 358 = 2L + 139
- 219 = 2L
- L = 109.5
Answer:
49/50 equals out to 98%
Step-by-step explanation:
Answer:
x+5
Step-by-step explanation:
x+5
You can't do 4 1/4 minus 3/4. You have to turn the 4 1/4 into a improper fraction and then get the same denominator and then you can subtract. When it is a improper fraction, you can also cross cancel. Good Luck!