Hello,
Let's
V1 the velocity of the 1st bricklayer,
V2 the velocity of the 2nd bricklayer,
1wall=V1*6==>V1=w/6
1wall=V2*4==>V2=w/4
==>V1+V2=w/6+w/4=10w*24=5w/12
Let's t the time for the 2 bricklayer to build the wall
(V1+V2)t=w
==>5w/12*t=w
==>t=12/5 (h)=2h24min.
To do this, you simply need to substitute in 9 for n in the expression.
15 - n
= 15 - (9)
= 6
Hope this helps! :)
Answer:
m<1 < m<2
Step-by-step explanation:
m<1 < m<2 because m<3 < m<4
<h3>Hope it is helpful...</h3>
Answer:
2/5m - 7/5
Step-by-step explanation:
Combine the like terms (-4/5 and -3/5)
