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VMariaS [17]
3 years ago
6

What is the solution to 2x^2 + x + 2 = 0

Mathematics
1 answer:
egoroff_w [7]3 years ago
5 0

x=\frac{-2+2\sqrt{3}}{2},\frac{-2-2\sqrt{3}}{2}x=
​2
​
​−2+2√
​3
​
​​
​​ ,
​2
​
​−2−2√
​3
​
​​
​​

2 Simplify solutions
x=-1+\sqrt{3},-1-\sqrt{3}x=−1+√
​3
​
​​ ,−1−√
​3
​
​​

Done
Decimal Form: 0.732051, -2.732051
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Figure out what the percent is
DaniilM [7]

The percentage of data that is roughly greater than 66, as displayed in the box plot, is 100%.

<h3>How to Determine a Percentage of a Data Represented in a Box Plot?</h3>

In a box plot, we have the following displayed five-number summary which tells what percentage of the data distribution for each part of the data distribution:

Upper quartile (Q3): This is the value at where the box in the box plot ends at the edge of the box. From this point to the left, all data values that fall within the bracket make up 75% of the data.

Lower quartile (Q3): This is the value at where the box in the box plot starts at the edge of the box. From this point to the left, all data values that fall within the bracket make up 25% of the data.

Median: this is the middle value at the point where the line divides the box and data below this point make up 50% of the data.

The other five-number summary are the maximum and the minimum values that are represented by the whiskers.

On the box plot given, 66 is at the extreme whisker at the left. This means that the percentage of data that is roughly greater than 66 is 100%.

Learn more about the box plot on:

brainly.com/question/14277132

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7 0
1 year ago
Find the lateral surface area of this
Ksenya-84 [330]

Answer:

A=157.07\ cm^2

Step-by-step explanation:

Given that,

The radius of a cylinder, r = 5 cm

Height of the cylinder, h = 5 cm

We need to find the lateral surface area of the  cylinder. The formula for the lateral surface area of the cylinder is given by :

A=2\pi r h

Put all the values,

A=2\pi\times 5\times 5\\\\=157.07\ cm^2

So, the lateral surface area of the cylinder is 157.07\ cm^2.

7 0
3 years ago
4.
natali 33 [55]
The answer is D. 15+18+12+5= 50 and there are 5 ramblers
3 0
2 years ago
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2. What number will go in the blank so that the equation will have an
dolphi86 [110]

Answer:

I think option B) -5

I hope help you

7 0
2 years ago
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Frank stands 400 feet from the base from the Statue of Liberty. If the Statue of Liberty is 306 feet tall, what is the angle of
Black_prince [1.1K]
                                                           Top of Statue                                                                    |           
                                                                    |
                                                                    |
                                                                    |
Frank -----------------------------------------------Base      

  Frank - Base = 400 ft
  Base- Top statue = 360 feet
  Angle of elevation =Angle Top-Franck-Base, let it be angle Ф
  
  tan (Ф) = 360/400 = 0.9
  arc tan (0.9) = tan⁻¹(0.9) = 41.98 , 

 Ten angle of elevation Ф ≈ 42°


7 0
2 years ago
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