You are able to divide or mutiply both so let's divide. Divide each by four to get1/2. hope this helped.
Answer:
f(-2)= -2x+5 = 9
Step-by-step explanation:
Substitute the given value into the function and evalute.
Step-by-step explanation:
AB = DC = 40 - 2x
AD = BC = 30 - 2x
there is not more explanation possible, I think.
we cut off from each side 2 pieces of x cm. so, AB, DC, AD, BC are the the remaining lengths.
the volume of the box is ground area times height (x is the length of the remaining flaps after the cut, so, when folding up these flaps/sides, they will be x cm high).
Volume = y = AB×AD×x
=> y = (40-2x)×(30-2x)×x = (1200 - 60x - 80x + 4x²)×x =
= (1200 - 140x + 4x²)×x = 4x³ - 140x² + 1200x
N=43
N-5=38
You add five on both sides, to isolate n.
N=43
