Answer:
Required equation : 
Together they can paint the same room in 2.25 hours or 2 hours 15 minutes.
Step-by-step explanation:
It is given that Dale Horton can paint a certain room in 3 hours.
One hour woks of Dale Horton = 1/3
Kathy Garcia can paint the same room in 9 hours.
One hour woks of Kathy Garcia = 1/9
Let together they can paint the same room in t hours.
One hour woks of both = 1/t



After reciprocal we get


1 hour = 60 minutes.
0.25 hour = 15 minutes.
Therefore, together they can paint the same room in 2.25 hours or 2 hours 15 minutes.
Answer:
b) 
Step-by-step explanation:
b) To find the inverse function, switch the
and
variables and solve for
:

Verify Answer:

5x + 18 + 81 + 4x = 180
Like terms
9x + 99 = 180
9x = 81
X = 9
Hope this helps!
Brainliest is much appreciated
Answer:
y=2x+11
Step-by-step explanation:
You first have to distribute the 2 to (x+7) to get y+3=2x+14. after that all you have to do is subtract both sides of the equation by 3 to get y=2x+11
Answer:
the area is 60
Step-by-step explanation:
Triangle area fourmula is (h*b)/2
8*15=120 120/2=60
A=60