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The area is maximized when half the fence is used parallel to the building, and the other half is split between the ends and partitions.

Each of the 4 kennels is (105/4)' long by (105/5)' wide, that is ...
.. 26.25 ft long by 21 ft wide.

_____
Let x represent the length of fence used parallel to the building. Then the total area is
.. A = x*(210 -x)/5
This is the equation of a parabola with its vertex at x=105, halfway between the zeros at x=0 and x=210.

code is 871

trust me i just did this and got it right

 Opens Right

WORK SHOWN:  

(y−k)²=4*a*(x−h)

Where -

k=3→ y - coordinate of the vertex
h=−2→ x - coordinate of the vertex
a=2→ Distance between the vertex and the focus

Substitute these values in the given formula

(y−3)²=4*2*(x-(-2))

(y−3)²=8(x+2)

THANK YOU HAVE A NICE DAY

Thank you so much!

Great! I'm glad I could help. 

One more thing:

\(0.xy = \frac{xy}{100}\)

\(0.x = \frac{x}{10}\)

And so on. :)

The focus is always 'inside' the parabola curve    vertex 2,3     focus  0,3   is LEFT the vertex so the parabola opens leftward.

Yesssssss !

That's so smart. 

My first insinct was to set up p^3 + 7 + 3p^2 + 6.... etc. 

=^._.^=

Wouldn't this be \(\frac{-37}{100}\)?

hi CPhill

was i right ?

AD = sqrt  [ ( 5 - 0)^2  + (12 - 0)^2 ] =  sqrt [ 25 + 144]   =sqrt (169)   = 13

So  the perimeter =   9  + 12  + 4 + 13   =   38 units 

THANK YOU

i hope u can read this cursive

2. 

40% + 35 % = 80 %    so 20% are dated after 1980

20% is .20 in decimal form

.20 (1600) = 320 coins dated after 1980

j = 7d     given

     let 's' = papers taken from j

j - s   = 40         j= 40 + s

d + s = 40         d = 40 -s       sub these into the original equation

40+s = 7 (40-s)

s = 30 papers

Hello, KOBE!

That answer is not correct!!! The guy who posted that answer made a lot of errors.

CE = 5.5         CF = 11           

CD = 6.05

ED = 2.1

7 cos 210 =  -6.06

7 sin 210 = -3.5i

Well let's say she flies for ONE hour.....then she should be 50.2 miles north and 1 hour's mph east

Bearing 68.9 is actually 21.1 in our usual coordinate 'plane'   (haha)

tan 21.1 = 50.2 / mph        mph = 130 mph

CORERECT!!!!!!!!!!!!!!!!!!!!! 

TYSM! 

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