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IgorLugansk [536]
2 years ago
6

Find the value of x. ​

Mathematics
1 answer:
forsale [732]2 years ago
4 0

Answer:

x = 30

Step-by-step explanation:

90 + 4x + 5x = ( sum of full angle is 360)

90 + 9x = 360

transpose

9x = 360 - 90 = 270

x = 270 ÷ 9

x = 30

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The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle. If a circle has a diameter of 4, its circumference is 3.14*4=12.56. If you know the radius, the diameter is twice as large.
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3 years ago
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Listed below are the measured radiation emissions​ (in W/kg) corresponding to cell​ phones: A,​ B, C,​ D, E,​ F, G,​ H, I,​ J, a
Sophie [7]

Answer: a. Mean = 0.696364

b. Median = 0.64

c. Midrange = 0.895

d. There is no Mode

e. 2. The maximun data value is the most relevant statistic, because it is closest to the limit of 1.6W/kg and that cell should be avoided.

Step-by-step explanation:

a) Mean is an average number of the data set, calculated by the sum of all the value divided by the quantity of the set:

mean = \frac{0.75+0.22+1.23+0.64+0.54+0.24+0.81+1.57+0.29+1.02+0.35}{11}

mean = 0.696364

b) Median is the middle number in the list of numbers. In this case, since there are 11 elements in the set, the middle number is:

sorted numbers of the data set:

0.22 0.24 0.29 0.35 0.54 0.64 0.75 0.81 1.02 1.23 1.57

median = 0.64

c) Midrange is another type of average number. It is calculated as:

midrange = \frac{high+low}{2}

midrange = \frac{1.57+0.22}{2}

midrange = 0.895

d) Mode is the number that appears most often in the list of numbers. For this data set, each number appears only one time, so there is no mode.

Mode = 0

e) According to the question, cell phone radiation is dangerous when it is higher than 1.6W/kg. The cell phone with the maximum data value (1.57 W/kg) should be avoided, since it is too close to the limit described.

So, the measures of center are not the most important statistic to be observed but the maximum data value.

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3 years ago
Write the decimal equivalent of the following: seven hundred seventy-five thousandths?
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Answer:

0.775

Step-by-step explanation:

think place values to the right

tenths, hundredths, thousandths

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3 years ago
1. A city planner is mapping out some new features for a triangular park. She sketches the park on grid paper. The coordinates o
iren [92.7K]

Answer:

Download Socratic it has all the information you need

4 0
3 years ago
What is the area of this quadrilateral need help ASAP
vova2212 [387]

Answer:

42

Step-by-step explanation:

The figure is broken into different shapes so you find the area of each shape shown and add them up!

Step one: find the area of the triangle. 1/2*base*height* The base is 3 and the height is 4. it will be 6. This applies to the second triangle on the bottom as well. The total of both triangle is 12.

Step two: find the area of the rectangle.base*height. All you have to do is 10*3 which is 30.

Step three: now add up all the areas you got. 30+12. which is 42.

hope this helps :)

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4 years ago
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