Plz ? ! guving alexandra is installing edge material around her yard. she has 400 ft of edge material to surround three sides of her rectangular yard. the fourth side will be against her deck and does not need edging. what is the maximum area that can be enclosed by the edging? enter your answer in the box.

The answer is 20,000 feet squared.

Step-by-step explanation: I don't know how ya'll got that one right but that's not how your supposed to do it. How I am currently getting taught is figuring out the length of the side parallel to the deck.

That equation is 400-2x

Then, you do this to solve for area;

A=L*W             (substitute)

A=L(400-2x)  

A=x(400-2x)

A=-2x^2 + 400x

Then, to find the x coordinate of the parabola, you do -b/2(a)

This substituted is -400 divided by -4, which equals 100.

So, now we know that x=100. substitute in 100 for x, and we get;

A=-2(100^2) + 400*100

A=-20,000+40,000 which equals...

20,000

∠1≅∠2 by the alternate exterior angles theorem.

step-by-step explanation:

given, a ∥ b and ∠1 ≅ ∠3 .we have to prove that e ∥ f

we know that ∠1≅∠3 and that a || b because they are given. we see that by the alternate exterior angles theorem. therefore, ∠2≅∠3 by the transitive property. so, we can conclude that e || f by the converse alternate exterior angles theorem.

we have to fill the missing statement.

transitivity property states that if a = b and b = c, then a = c.

now, given ∠1≅∠3 and by transitivity property ∠2≅∠3 .

hence, to apply transitivity property one angle must be common which is not in result after applying this property which is ∠1.

the only options in which ∠1 is present are ∠1 and ∠2, ∠1 and ∠4

∠1 and ∠4 is not possible ∵ after applying transitivity we didn't get ∠4.

hence, the missing statement is ∠1≅∠2.

so, ∠1≅∠2 by the alternate exterior angles theorem.

answer: i don't understand it

step-by-step explanation: sorry