It should be b let me know if im right
Answer:
6 feet.
Step-by-step explanation:
Dimensions of the Pool =80 feet long by 20 feet wide
Area of the walkway =1344 square feet.
If the width of the walkway=w
- Length of the Larger Rectangle =80+2w
- Width of the Larger Rectangle =20+2w
Area of the Walkway =Area of the Larger Rectangle - Area of the Pool
![1344=(80+2w)(20+2w)-(80*20)\\1344=80*20+160w+40w+4w^2-80*20\\4w^2+200w=1344\\4w^2+200w-1344=0\\We factorize\\4(w^2+50w-336)=0\\4(w^2-6w+56w-336)=0\\w(w-6)+56(w-6)=0\\(w-6)(w+56)=0\\w-6=0$ or $ w+56=0\\w=6$ ft or $ w=-56$ \\Therefore, the width of the walkway , w=6 feet.](https://tex.z-dn.net/?f=1344%3D%2880%2B2w%29%2820%2B2w%29-%2880%2A20%29%5C%5C1344%3D80%2A20%2B160w%2B40w%2B4w%5E2-80%2A20%5C%5C4w%5E2%2B200w%3D1344%5C%5C4w%5E2%2B200w-1344%3D0%5C%5CWe%20factorize%5C%5C4%28w%5E2%2B50w-336%29%3D0%5C%5C4%28w%5E2-6w%2B56w-336%29%3D0%5C%5Cw%28w-6%29%2B56%28w-6%29%3D0%5C%5C%28w-6%29%28w%2B56%29%3D0%5C%5Cw-6%3D0%24%20or%20%24%20w%2B56%3D0%5C%5Cw%3D6%24%20ft%20or%20%24%20w%3D-56%24%20%5C%5CTherefore%2C%20the%20width%20of%20the%20walkway%20%2C%20w%3D6%20feet.)
Answer:
Percy used 77 liters to wash
Step-by-step explanation:
This question can be solved using a rule of three.
Each minute of washing costs 7 liters.
She washed for 11 minutes.
So
1 minute - 7 liters
11 minutes - x liters
x = 7*11 = 77
Percy used 77 liters to wash
Answer:add me on the gram at n.preme_
Step-by-step explanation:
Answer:
00:13 mm:ss
Step-by-step explanation:
There are 60 seconds in a minute. This fact can be used to convert the time period(s) to minutes and seconds either before or after you do the subtraction.
<h3>Difference</h3>
It is often convenient to do arithmetic with all of the numbers having the same units. Here, we are given two values in seconds and asked for their difference.
100 s - 87 s = (100 -87) s = 13 s
The difference between the two time periods is 0 minutes and 13 seconds.
<h3>Conversion</h3>
If you like, the numbers can be converted to minutes and seconds before the subtraction. Since there are 60 seconds in a minute, the number of minutes is found by dividing seconds by 60. The remainder is the number of seconds that will be added to the time in minutes:
87 seconds = ⌊87/60⌋ minutes + (87 mod 60) seconds
= 1 minute 27 seconds
100 seconds = ⌊100/60⌋ minutes + (100 mod 60) seconds
= 1 minute 40 seconds
Then the difference is found in the same way we would find a difference involving different variables. (A unit can be treated as though it were a variable.)
(1 min 40 s) -(1 min 27 s) = (1 -1 min) + (40-27 s) = 0 min 13 s
The difference between the two time periods is 0 minutes and 13 seconds.