Answer:
Step-by-step explanation:
Lets suppose the one side be x and the other side of the rectangle be y
given area
implies x = 650/y
Cost = 2*4*x+2*3*y=8x+6y
= 8*650/y + 6y
= 5200/y + 6y
upon differentiating we get
=
= 2600/3
y= = 43.3
x= 15
C(43.3)= >0 hence it is a minima value
optimizing the result we get
Cost = 8*15+6*43.3 =$ 379.8
30 students, 9 wearing watches.
30:9
if 30 is multiplied by 4 so will 9
120:36
An equation to match is 9+(3.5 x 2)=16
aka 9+7=16
An equivalent equation is 4+12=16, if that's what you mean.
X would be 2, if that's what you're asking for.
Sorry if this isn't what you were looking for.
Answer:
a.
Step-by-step explanation:
its the right way