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4 years ago

A farmer needs to enclose two adjacent rectangular pastures. How much fencing does the farmer need?

1 answer:

3 0

W=width of the pasture, and
320000/w=length (parallel to river) 
F=twice width + length 
=2w + 320000/w 

Find derivative of F with respect to w and equate to zero to find w. 
i.e. 
Solve for w in 
dF/dw=0
hope it helps

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This table shows a proportional relationship between the number of cups of sugar and flour used for a recipe.

inna [77]

To find the answer for one cup of flour, divide the cups of sugar by the cups of flour. Here’s how it works.

Since we want the proportion for 1 cup of flour, we divide it by itself to get 1.

Thus, we need to have equal sides, so we divide the number of cups of sugar by the amount the cups of flour divided by.

So: 2.5/7.5=1/3

1 cup of flour is proportional to 1/3 cups of sugar.

Hope this helps!

3 0

3 years ago

Estimate the measure of ∠PQR to the nearest 10 degree

timurjin [86]

Answer: i’m just guessing but id say 45°??

Step-by-step explanation:

bc it looks like half of 90° and half of 90 is 45

4 0

3 years ago

Read 2 more answers

A fire station is to be located along a road of length A, A < q. If fires occur at points uniformly chosen on (0, A), where s

Shtirlitz [24]

Answer:

Step-by-step explanation:

Given that X is uniform in the interval (0,A)

X is continuous since it represents the distance

A fire station is to be located along a road of length A, A < q. If fires occur at points uniformly chosen on (0, A), we should find where the station be located so as to minimize the expected distance from the fire

Distance can be taken as absolute values here as either side is the same.

E(|x-a|] is to be minimum

E(|x-a|)=E(x-a) for 0<x<a

=E(a-x), for a<x<A

Using integral we find this value

$E(|x-a|)=\int\limits^a_0 {x-a} \, dx +=\int\limits^A_a -{x-a} \, dx\\f(a)=\frac{a^2}{2} -\frac{(A-a)^2}{2}$

$f(a)=\frac{a^2}{2} +\frac{(A-a)^2}{2} \\f'(a) = a-(A-a)\\f"(a) =2$

Using calculus we find that f" is positive so when f' =0 we get solution

f'(a) =0 gives

$a=\frac{A}{2}$

Hence fire station to be located at the mid point of 0 and A

8 0

4 years ago

Rosa bought 3 pairs of shoes. Each pair cost $40. She paid $120 for all three pair.

tangare [24]

Answer:

Yes

Step-by-step explanation:

Each shoe costs $40.

Then 3 pairs would cost :

40 x 3

= $120

7 0

3 years ago

Asfjpasjfaafdad adsafdshfd

Kay [80]

4020

you're supposed to multiply the length value by 1760

7 0

3 years ago