Answer:
7 is the unit rate.
Step-by-step explanation:
7 because 7x4 is the 28.
Time=10 trips * (7/12 hours/1 trip)=70/12 hours=35/6 hours.
1 hour=60 minutes, so:
35/6 hours *(60 minutes / 1 hour)=350 minutes
Answer: She spend communting 350 minutes.
Answer:
Full drum 80 dollars
one lid missing
earn 10 dollars less
Step-by-step explanation:
We need to find the surface area
SA = 2 pi r^2 + 2 pi rh
The diameter is 2 so the radius = 2/2 =1
SA = 2 * pi * 1^2 + 2 * pi * 1 * 3
= 2 pi + 6pi
= 8pi
Using pi = 3.14
SA = 8 *3.14 = 25.12 ft^2
We get 3.18 per ft^2
25.12 * 3.18 =79.88
To the nearest dollar
80 dollars
If one of the lids is missing
SA = pi r^2 + 2 pi rh
pi + 6pi
7 pi
Using pi = 3.14
SA = 7 *3.14 = 21.98 ft^2
We get 3.18 per ft^2
21.98 * 3.18 =69.90
To the nearest dollar
70
The difference is 10 dollars
Answer:
is there any thing else to go with this problem if there is let me know so I can fully try to help you.
