Answer:
18
Step-by-step explanation:
3 x 3 = 9
9 x 2 = 18
Step-by-step explanation:
Let x be the length and y be the width of the rectangular plot.
The plot is bounded on one side by a river and on the other three sides by a single-strand electric fence. It means,
x+2y = 1500
x = 1500 - 2y ....(1)
We know that the area of a rectangular plot is given by :
A = xy ....(2)
Put the value of x from equation (1) in (2)
.....(3)
For largest area, differentiate above area equation wrt y.
![\dfrac{dA}{dy}=\dfrac{d}{dy}(1500y-2y^2)\\\\=1500-4y\\\\\text{Put}\ \dfrac{dA}{dy}=0\\\\1500-4y=0\\\\y=\dfrac{1500}{4}\\\\=375](https://tex.z-dn.net/?f=%5Cdfrac%7BdA%7D%7Bdy%7D%3D%5Cdfrac%7Bd%7D%7Bdy%7D%281500y-2y%5E2%29%5C%5C%5C%5C%3D1500-4y%5C%5C%5C%5C%5Ctext%7BPut%7D%5C%20%5Cdfrac%7BdA%7D%7Bdy%7D%3D0%5C%5C%5C%5C1500-4y%3D0%5C%5C%5C%5Cy%3D%5Cdfrac%7B1500%7D%7B4%7D%5C%5C%5C%5C%3D375)
Put the value of y in equation (1).
x = 1500-2(375)
= 750 m
Put the value of y in equation (3).
![A =1500(375)-2(375)^2\\A=281250\ m^2](https://tex.z-dn.net/?f=A%20%3D1500%28375%29-2%28375%29%5E2%5C%5CA%3D281250%5C%20m%5E2)
Hence, the largest area is 281250 m² and its dimensions are 750 m and 375 m.
Answer:
I just answered the other question you asked. Why did you ask the same question twice? Also, I said the 1st one
Step-by-step explanation:
QR=9
QP=6
TU=19
TS=?
Okay so the triangles are kindred, now the equation can be made
9/16=6/x
So now we are going to cross multiply
9x=114
Now divide both sides by
912 2/3
Your answer is:
TS=12.6