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lorasvet [3.4K]
3 years ago
9

Find the value of x 143° 2x° 116° 125° 152° 140° 139° X°

Mathematics
2 answers:
Ann [662]3 years ago
7 0

Answer:

88.33\°

Step-by-step explanation:

Angles in an octagon add up to 1080 degrees.

x+2x+143+139+140+125+116+152=1080

3x=1080-143-139-140-125-116-152

3x=265

x=265/3

Mumz [18]3 years ago
6 0

Answer:

88\frac{1}{3} Or 88.33

Step-by-step explanation:

So since we know that <u><em>all the angles in a octagon add up to 1080 </em></u>we can make a equation for this question which is down below.

x+2x+143+139+152+140+116+125=1080

So adding all that up we get this down below.

3x+815=1080

To find x we subtract 815 from 1080 and we get this.

3x=265

And finally we divide 265 and 3.

x=88\frac{1}{3}

So x is 88 and one-third nit it can be in decimal form like this below.

88.33 This is rounded to the nearest hundredth

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63/88

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2 years ago
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2 years ago
the line passing through the points A (-1,3k) and B (k , 3) is parallel to the line whose equation is 2y+3x=9. write down the co
vodomira [7]

Answer:

k = 3

Step-by-step explanation:

If the line passing through the points A (-1,3k) and B (k , 3) is parallel to the line whose equation is 2y+3x=9, then their slopes are equal

For coordinate AB;

slope m1 = 3 - 3k/k-(-1)

m1 = 3-3k/k+1

For the line 2y+3x = 9

2y = -3x + 9

y = -3/2 x + 9/2

Slope m2 = -3/2

Since m1 = m2

3-3k/k+1 = -3/2

Cross multiply

2(3-3k) = -3(k+1)

Expand

6 - 6k = -3k - 3

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4 0
2 years ago
The probability of winning a certain lottery is 1/77076 for people who play 908 times find the mean number of wins
Alex73 [517]

The mean is 0.0118 approximately. So option C is correct

<h3><u>Solution:</u></h3>

Given that , The probability of winning a certain lottery is \frac{1}{77076} for people who play 908 times

We have to find the mean number of wins

\text { The probability of winning a lottery }=\frac{1}{77076}

Assume that a procedure yields a binomial distribution with a trial repeated n times.

Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial.

n=908, \text { probability } \mathrm{p}=\frac{1}{77076}

\text { Then, binomial mean }=n \times p

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4 0
3 years ago
A farmer packed 3 pints of strawberries every 4 minutes. In the afternoon she packed 2 pints of strawberries every 3 minutes. Wh
MakcuM [25]

Answer:

5 (strawberries / hours)

Step-by-step explanation:

calculation fro morning

strawberries / minutes  x   minutes / hours =   strawberries / hours

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3/4* 60/1  = 45 strawberries / hours

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strawberries / minutes  x   minutes / hours =   strawberries / hours

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 45-40 = 5 (strawberries / hours)

8 0
2 years ago
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