Answer:
um i think 3-5
Step-by-step explanation:
Amount of room hannah can paint in an hour = 1/20
amount of room destiny can paint in an hour = 1/16
number of hours = x
1/20x + 1/16x = 1
the reason why this formula is true is, the amount of the room painted in the end should be 1 (the whole room)
4/80x + 5/80x = 1
9/80x = 1
9x = 80
x = 80/9 hours
x = 8.89 hours
The surface area of the cube is 600cm^2.
6(10^2)
6(100)
600
The answer would be...
1/3n + 3/4n = n + 1
^^^That would be the last option
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:

Step-by-step explanation:
Regan needs the following:
yards for a dress

Total Length of fabric needed

The number of yards of 45-in. fabric needed is 