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I do not agree with Noah.

If you start with a point in the upper-right quadrant and rotate this point 180^o, this point will end in the lower-left quadrant.

However, if you reflect the original point over the line m, it will end in the upper-left quadrant.

If you picture a graphing plane with the original point being (5,2), rotating this point 180^o, it would end at (-5.-2). 

If you reflect (5,2) in the y-axis, it would end at (-5,2).

If  AB  =  AC

Then  the coordinates of of  C  must  be    ( sqrt  ( a^2 + b^2)  , 0) = ( c , 0)

But this implies  that  a^2 + b^2  = c^2

Which implies that   a^2  - c^2  =  -b^2

Which also  means that  (a - c) (a + c)  = - b^2

D  =  [ ( a + c)/2 , b/2 ]

E  =  [( a + c) /2, 0]

F =   [ (a+ c) / 2 , b/4 ]

Slope  of   AF  =   b/4                       b                 

                           _________   =   _______ 

                            (a + c)/2             2 (a + c)         

Slope  of  BE    =           b                               b                         b                    2b              

                             _______________ =     ___________  =  _______   =   ____  

                              ( a  -  (a+ c)  / 2)            a - a/2 - c/2         a/2 - c/2           a - c          

Multiplying  top.bottom  of the last  fraction  by  a + c   we  have that

2b ( a + c)                   2b (a + c)                2 ( a + c)          -  2 ( a + c)          

____________  =   ____________  =      _________  =   __________

(a - c) (a + c)              -  b^2                            -  b                    b

So  slope  of  AF  *  slope of  BE  =

      b                          - 2 (a + c)

_________        *       _________   =     -  1       

   2(a + c)                         b 

Which  means  that  AF  and BE  are perpendicular

The area of the triangle is   84.939 cm²  

Hey, do you know if CPhill is alright? He's been struggling with a geometry proof for the last 2 hours lmao.

Sorry Never mind I was Correct

If you look here there is a better explanation of the steps.

https://brainly.com/question/82309

24x-16 is the whole parcel. 3x-2 is 1 row of trees. (3x-2)* ? = 24x-16. ? = 8. 8(3x-2)=24x-16.

There are 8 Row's of trees in each parcel 

Yes that works too. Thanks EP

the question is asking you where B will go when the triangle is rotated into the new position.

where do you think it will go. ?

You know what, I'm not sure how you have the most likes on this website, but I really want to see CPhill beat you.

https://prnt.sc/r8664m

Full question ^

I just  made  a  typo in the original problem....I used  38  instead of 39.....here is the  corrected  answer  :

3)

If angle B = 39 degrees and arc PS = 116 degrees, find the degree measure of arc AS.

Angle B =  (1/2) ( arc AS - arc AP)

39  =  (1/2) (arc AS - arc AP)

78  =  arc AS - arc AP     (1)

And

arc AS + arc AP  + arc PS  = 360

arc AS + arc AP   +  116  =  360

arc AS  + arc AP  =  244   (2)

Add  (1)  and (2)

arc AS - arc AP   =  78

arc AS +  arc AP  = 244

2 arc AS  =  322      divide by 2

arc AS  =  161°

p =  27 - (x/400)^2  =  [ 27  -  x^2 / 160000]

(a) The revenue function for a week  is  price * pairs sold  =  p *  x   =   27x  - x^3/160000

(b)   The  domain is  [0, c]

And we can  find  c   as follows

  27x  - x^3/160000   =    0

x ( 27 - x^2 / 160000)   = 0

x = 0  is one solution   [ we  know this  ]

And

27  = x^2  / 160000   =  0

27   = x^2  /160000

(160000)(27)  =   x^2      take  the positive  root

x ≈  2078  = c

So  the domain is   [ 0,  2078 ] 

(c) Here is the  graph  : 

https://www.desmos.com/calculator/suhpihdav5

Let  the normal  rate  of  the  plane  = P

Let the rate of the wind  = W

With the wind, the effective  rate =  (P + W)

Against the wid, the effective rate  is (P  -W)

And  Rate * Time  =  Distance

So

(P + W) * 4   = 700

(P - W)*5  = 700            simplify

4P + 4W  = 700     

5P  - 5W   = 700

Multiply  the  first equation   through by  5   and the  second through  by  4

20 P  - 20W  = 3500

20P -   20W =  2800     add these

40P  =  6300     divide  both sides  by  40

P =   157.5  mph

And 

 4 (157.5) +  4W  =700    divide through by 4

157.5  +  W  = 175   subtract  157.5  from both sides

W =  17.5

The possible rational zeroes  are

±  [  all the  factors  of  6  ]  / [ all the factors of  3  ] =

Factors of  6  =   1,2,3,6

Factors of 3   = 1,3

So  we  have  these

± [ 1/1, 2/1 , 3/1, 6/1, 1/3, 2/3  ]  =

± [ 1/3, 2/3 , 1 , 2, 3, 6 ]

True

y =  3x^2  -30x  + 76)

Complete the square on x

y  = 3 ( x^2  -  10x  +  25)  +  76  -  3*25

y  = 3  (  x  - 5) ^2   +  76   -75

y  = 3(x - 5)^2  + 1

Here;s the graph  :   https://www.desmos.com/calculator/vamctntdeo

The  vertex  is   ( 5 , 1)

The axis of symmetry ⇒    x  = 5

This parabola turns upward......the  vertex lies above  the  x  axis....so  there  are  no x intercepts

The y  intercept  =    76 

Awesome! thank you for checking that for me.

This seems to indicate that  your answer to  the first one is  good  :

https://en.wikipedia.org/wiki/Rudolf_Clausius

(x  -1)^4   =

(x - 1) (x -1) ( x - 1)  ( x - 1)

The zero  =  1       its multiplicity  =  4

3.

Which of the following systems shows an increase in entropy?

building a house of cards

water freezing into ice

spilling a jar of pennies

steam condensing to liquid water

would it be C?

4.

Making a heat engine that uses its exhaust heat to do work is restricted according to which principle?

second law of thermodynamics

conservation of matter

first law of thermodynamics

conservation of energy

woul it be A?

Here's  a  graph  for the  first  one  :

https://www.desmos.com/calculator/eijmu9tzm9

csc A  =  r    /   y

r  = sqrt  [ (-4)^2  + (-6)^2  ] =  sqrt  [ 16  + 36]  = sqrt  [52]   =  sqrt   [4 * 13]  = sqrt (4) * sqrt (13) =  2sqrt (13)

So

csc A  =  2 sqrt (13)  /  -6    =     -sqrt (13)  / 3

(a) How many different line segments are formed by joining pairs of of these points?

I don't know the answers to (b)  or (c)   but for this one we have

n ( n -1)        10  *  9

________  =  _______  =      45

    2                     2

See here  for a  simple  derivation of the  formula  :

https://www.basic-mathematics.com/number-of-segments.html

what do you say that ?

Let the  number  of paperback  books  = x

Then the number  of hardcover books  = 25  - x

So.....we  have

number of hardcover * cost each  +  number of paperbacks * cost each = total cost

So

(25  - x) * 1.50  +  x * .50   =   26.50     simplify

37.5 -1.50x  +  .50x   = 26.50

37.5  -  x  =  26.50     subtract   37.5  from both sides

-x  =  -11     multiply thrugh by  -1

x  =11  =  number  of paperbacks purchased

Jenny, I don't understand a word of this.....but, depending upon what you might trust, here's what this website says  :

https://www.westfield.ma.edu/PersonalPages/cmasi/gen_chem2/imf/phase_changes/ke_vs_imf.htm