R1t+t/2.5=1, we are told it takes both 1.5 hours so
1.5r+0.6=1
1.5r=0.4
r=4/15
So for this other pipe to fill the pool by itself...
4t/15=1
4t=15
t=15/4
t=3.75 hours
check..
4t/15+t/2.5=1
(4t+6t)/15=1
10t=15
t=15/10
t=3/2
t=1.5 hours, correct (for both pipes filling the pool)
Answer:
A. 0.92t
F. t-0.08t
Step-by-step explanation:
let t be the original acreage
8% decreased from the original acreage = 0.08t
so new acreage = t- 0.08t = 0.92t
or
New acreage = old acreage (1 - discount)
= t ( 1 - 0.08)
= t - 0.08t
The answer is a+6b, if you want to know the proof please comment on this post
F(x)=2x+5, g(x)=x-7
f(g(x))=2(x-7)+5=2x-14+5=2x-9
When x= -3:
<em>:)</em>
