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Makovka662 [10]
3 years ago
7

Which geometric figure has 120 rotational symmetry?

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

Answer:

D

Step-by-step explanation:

An equilateral triangle, and all regular polygons with 3n sides, thus D.

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What is the surface area of the figure?
Anna71 [15]

Answer:

B

Step-by-step explanation:

5 0
3 years ago
Can some one explain to me how I do it step by step to understand and with answer what is the area and perimeter and type please
frozen [14]
This is a square. because the lengths and the widths are equal. I mean, all four sides are equal.


the area of a square is the square of a side
{s}^{2}  =  {5.4}^{2}  = 29.16

and the perimeter of a square is a side multiplied by 4
4s = 4 \times 5.4 = 21.6




hope this helps


good luck
4 0
3 years ago
What is the discriminant of 3x2 + 6x = 2?. a.12. b.18. c.42. d.60
Vikki [24]
<u><em>Answer:</em></u>
D. 60

<u><em>Explanation:</em></u>
<u>The general form of the quadratic equation is:</u>
ax² + bx + c = 0

<u>The given equation is:</u>
3x² + 6x = 2
This can be rewritten as:
3x² + 6x - 2 = 0

<u>By comparison, we can find that:</u>
a = 3
b = 6
c = -2

<u>Now, the discriminant of a quadratic equation is given by:</u>
b² - 4ac

<u>Substitute with the given values to get the discriminant for the given equation as follows:</u>
b² - 4ac = (6)² - 4(3)(-2) 
             = 36 - (-24)
             = 36 + 24
             = 60

Hope this helps :)
4 0
4 years ago
Read 2 more answers
The volume of gas in a container at a constant temperature varies inversely as the pressure. If the volume is 32 cubic centimete
finlep [7]

Answer:

The new pressure is 4.27 pounds

Step-by-step explanation:

In this question, we have the volume varying inversely as the pressure;

Firstly, let's say the volume is V and the pressure is P

Mathematically;

V ∝ 1/P

Let us insert a constant of proportionality K

⇒ VP = K

Let's calculate the value of K

K = 32cm^{3} × 8 = 256 cm^{3} pounds

Now in the second scenario, pressure is unknown but we know the volume to be 60cm^{3}

Recalling;  VP = K

P = K/V = 256 cm^{3} pounds/60cm^{3} = 4.27 pounds

7 0
4 years ago
Read 2 more answers
ASAP PLEASE &lt;3A rectangular garden has length and width as given by the expressions below. Length: 4 − 7(3x + 4y) Width: 3x(−
creativ13 [48]

Answer:

  • 8 - 42x - 56y - 12xy

Step-by-step explanation:

<u>Given sides of a rectangle</u>

  • Length: l =4 − 7(3x + 4y)
  • Width: w = 3x(−2y)

<u>Perimeter of rectangle</u>

  • P = 2(l + w)

<u>Using the given values</u>

  • P = 2( 4- 7(3x + 4y) + 3x(-2y)) =
  • 2( 4 - 21x - 28y - 6xy) =
  • 8 - 42x - 56y - 12xy
4 0
3 years ago
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