Answer:
Option C is correct.
Step-by-step explanation:
Let the length be L
Let the width be W
The length of a rectangular floor is twice its width.
So, we get 
The length of the carpet is L
Carpet width is 2 feet less than the room, so 
Area of the carpet = 160 sq feet
We get :
As L=2W, we get
=> 
Equating to zero, we have
Taking out 2 common
=> 
=> 
We get roots as : (W-10) and (W+8)
Hence, W = 10 and W = -8(neglect this negative value)
Now, the width = 10 feet
Length = 
feet
Hence, option C is the answer.
Answer: 40
Step-by-step explanation:
Finding perimiter is simple! You add the L & the W by each other and then times that by 2!
15 + 5 = 20
20 X 2 = 40!
- R3KTFORGOOD ☕
Answer:
9.4.
Step-by-step explanation:
9^2 = 81 and 10^2 = 100
So the value of the square root of 89 is between 9 and 10.
The gap between the squares is 100-81 = 19 and the gap between 89 and 81 is 8 so an estimate of the square root would be 9 + 8/19 of the gap between 9 and 10.
9 + 8/19 = 8.42.
3x + 5y = 29 first equation
y = -4x - 1 second equation
substitute the second equation to the first equation;
3x + 5(-4x - 1) = 29
-17x - 5 = 29
solve for x;
-17x - 5 = 29
-17x = 34
x = -2
substitute x = -2 into the second equation to find y;
y = -4x - 1
y = -4(-2) - 1
y = 8 - 1
y = 7
so;
x = -2, y = 7
hope this helps, God bless!
