Answer:
x+y=15
Step-by-step explanation:
Given equation of
Differentiating both side
It passes through the point (12,3) so
So equation of tangent passing through (12,3) is
as
So x+y =15 will be the equation of tangent which passes though the point (12,3)
Answer:
Width=37in
Length=55in
Step-by-step explanation:
Let x in be the width dimension, the length dimension will be x+18 in. Area of a rectangle is calculated as A=lw. Given the area as2143 sq in, x can be calculated as:
#Substitute for every x in our function to find the true value of x:
#l=37+18=55in
for x=38:
#l=38+18=56in
For x=39:
#l=39+1854in
From the calculations above, A television with a width of 37 in and length 55in has its area closest to 2143 sq in.