If Nate paints the wall in 4 hours, it means that he can paint 1/4 of the wall every hour.
Similarly, if Jill paints the wall in 7 hours, it means that he can paint 1/7 of the wall in one hour.
So, together, they paint the following fraction of the wall in one hour:
.
At this rate, they need 28/11 hours to paint the whole wall, in fact, after that amount of time they paint
i.e. the whole wall
Answer:
The height is 30 cubic meters
Step-by-step explanation:
You don't need the formula for this!
So, the volume is 500 cubic meters, and the height is 2 1/2 or 2.5 meters.
Now, you have to make the measurements all the same, 12 meters is in 1 cubic meter. 2.5*12 is 30 cubic meters as the height.
I hope this helps
F(x)=x²+2x-1 and g(x)=2x-4 <span>2f(x)-3g(x)=?
</span>2f(x)=2*(x²+2x-1)=2x²+4x-2
3g(x)=3(2x-4)=6x-12
2f(x)-3g(x)=(2x²+4x-2) - (6x-12)= 2x²+4x-2 - 6x+12 =2x²-2x +10
<em>2f(x)-3g(x) = 2x²-2x +10</em>
3 over 8 plus 2 over 3 plus 1 over 3 = 11 over 8 or 1.375