Answer:
7 hours 30min
Step-by-step explanation:
Step one :
Given data
We are told that Erica can paint 1 room in 5hours
Her work rate is 1/5 room per hour
And also with the assistance of her friend they can paint 1 room in 3 hours
Hence their combined work rate is 1/3 room per hour
Step two
The combined work expression is
1/A+1/B=1/T
Where A=Erica's work rate
B=Rachael's work rate
T=combined work
1/5+1/B=1/3
1/B=1/3-1/5
1/B=5-3/15
1/B=2/15
B=15/2
B=7.5 hours
It will take Rachel 7 hours 30min to paint the room
Answer:
-55. just multiple -5 by 11
(4x−101)(2x+3)
Apply the distributive property by multiplying each term of 4x−101 by each term of 2x+3.
8x²+12x−202x−303
Combine 12x and −202x.
8x²−190x−303
Answer:
A) 38.62 ft
B) 92.27 ft
C) 32.59 ft
Step-by-step explanation:
A) tan10= x/185
X= 32.62 + 6ft= 38.62ft
B) tan25= x/185
X= 86.27 + 6ft= 92.27ft
C) 92.27 - 6ft= 86.27
86.27+ 32=118.27
use inverse of tan tan-1= 118.27/185 in which you get 32.59ft
4/12 of the fans are kids because 1/4 can be multaplied by 3 to get 3/12
