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yawa3891 [41]
3 years ago
6

Could someone with number 2 a

Mathematics
1 answer:
Alona [7]3 years ago
4 0

The sum of the interior angles of a polygon with n sides is

180(n-2)

Since a pentagon has 5 sides, the sum of its interior angles is

180(5-2) = 180 \cdot 3 = 540

Since it is a regular pentagon, all sides and angles are the same, so one single angle measures

\dfrac{540}{5} = 108 degrees.

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almond37 [142]

a rectangle has two even size the other two even sides a square has four even sides and square is a rectangle but a rectangle isn't a square

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Subtract the expression :<br> - 5x + 3x - 24<br> Plzz ....answer....plzzz
Afina-wow [57]

Answer:

-2x-24

Step-by-step explanation:

-5x+3x-24 = - 2x-24

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-3/8x - 11 = 4 pls HELP me im getting no where right now.
VashaNatasha [74]
-3/8x - 11 = 4
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3 years ago
Using this diagram, select the pair of lines that must be parallel.
Bas_tet [7]

Answer:

The answer would be D: d || f.

Step-by-step explanation:

  1. Since the angles 4 and 7 are parallel, it would make sense for the lines that the angles are on to be parallel as well.
  2. It just so happens that line d and line f are completely parallel to each other and angles 4 and 7 are on the lines. So the answer would be D.
7 0
3 years ago
The height of a small rise in a roller coaster track is modeled by () = −. + . + . , where x is the distance in feet from a supp
Reika [66]

Answer:

Maximum height is 7 feet

Step-by-step explanation:

Solution:-

- The complete question is as follows:

" The height of a small rise in a roller coaster track is modeled by f(x) = –0.07x^2 + 0.42x + 6.37, where x is the distance in feet from a supported at ground level.

Find the greatest height of the rise "

- To find any turning points ( minimum or maximum ) points of a trajectory expressed as function of independent parameter, we find the critical points of the trajectory where the first derivative of the dependent variable w.rt independent variable is set to zero.

- In our case the height of the roller coaster track (y) is function of the distance (x) from a supported pole at ground level.

                    f(x) = –0.07x^2 + 0.42x + 6.37

- Now set the first derivative equal to zero, and determine the critical values of x:

                    0 =  -0.14x + 0.42

                    x = 0.42 / 0.14 = 3 ft

- The critical value for the coaster track is at point 3 feet away from the supported pole at ground level. So the height f(x) at x = 3 ft, would be:

                    f ( x = 3 ) = max height

                    max height =  –0.07*3^2 + 0.42*3 + 6.37

                                        = 7 ft

5 0
3 years ago
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