Answer:
Step-by-step explanation:
Let r be the radius of the semicircle, then 2r is the width of the rectangle. Let y be the length of the rectangle. The perimeter of the window consists of two lengths, one width and length of semicircle, then
Express y:
The area of the window is
Substitute y into the area expression:
Find the derivative A':
Equate A' to 0:
When 
then 
and the function A is increasing, when 
then 
and the function A is decreasing. This means that at point the function A takes it maximal value (the area is maximal).
Answer:you need common denominatord 4*2=8 3*2=6 6/8+1/8=7/8 of sugar
Step-by-step explanation:
Answer:
here down is the answer
(2y/5y)^3+4y^2+6y
8y^3/125y^3 +16y^2+6y
8/125+16y^2+6y
8/125+16y^2+6y=0
16y^2+6y+8/125=0
it is in the form of quadratic equation
formula :
x=(-b+-square root of b^2-4ac) /2a
here a=16,b=6&c=8/125
x=(-b+-square root of b^2-4ac)/2a
x=(-6+-square root of 36-4.09)/2a here 4.09 came by calculation
x=(-6+-31.91)/2
so
x=(-6+31.91)/2 first (+);
x=25.91/2
x=12.955;
x=(-6-31.91)/2 then(-);
x=-37.91/2
x=-18.955 ;
ans is = 12.955&-18.955;
Answer:
Step-by-step explanation:
You have to divide 5 by 2 to find the unit rate.
5/2= 2.5
Hope this helps.
Answer:6/5+6x
Step-by-step explanation:multiply 3 by 2/5 and 15x by 2/5
