Answer:

Step-by-step explanation:
1) we know that
Sally can paint the wall in 54 minutes
so
The 100% of the wall ------> she can paint in 54 minutes
by proportion
calculate how much is the percent of the work in 36 minutes

That means
Sally in 36 minutes can paint the 66.67% of the wall
2) Sally and Ethan work together, they can paint the wall in 36 minutes
so
Ethan in 36 minutes can paint (100%-66.67%)=33.33%
by proportion
Calculate how much time does it take for Ethan to paint the wall by herself

That would be (171 + x) / 2....what u do to find the average is add up all the numbers, then divide by how many numbers there are.
A) 1/2
Because this scale factor is smaller than 1, which means it’s making it smaller than the original.
Answer:
203
Step-by-step explanation:
17*7=119
12*7=84
84+119=203
Answer:
(r-7) ÷ (6+?)
Step-by-step explanation:
I don't know what the last number is