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2 years ago

Find the value of X. Please show/explain work, and sorry if it’s hard to read

Mathematics

1 answer:

aliya0001 [1]2 years ago

5 0

Answer:

x = 100°

Explanation:

The polygon has 6 sides, meaning it's a hexagon. In the picture you can see the following steps under #1:

(6-2) x 180° = 4 x 180 = 720°

720 is the total amount that all the angles should add up to, including the missing number x.

To solve for x add all of the angles up:

120 + 156 + 145 + (x + 9) + x + 90 = 720

520 + 2x = 720 (subtract 520 from both sides)

-520

2x = 200 (divide 200 by 2 to have x on its own)

x = 100°

To make sure it's correct, plug in the value (100°) for x in the original equation to check the answer:

120 + 156 + 145 + 100 + 9 + 100 + 90 = 720

720 = 720 Correct

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When Harper commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 24 minutes and a

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Answer:

$\mu -2\sigma = 24-2*3= 18$

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Step-by-step explanation:

For this case we can define the random variable X as the amount of time it takes her to arrive to work and we know that the distribution for X is given by:

$X \sim N(\mu = 24, \sigma =3)$

And we want to use the empirical rule to estimate the middle 95% of her commute times. And the empirical rule states that we have 68% of the values within one deviation from the mean, 95% of the values within two deviations from the mean and 99.7 % of the values within 3 deviations from the mean. And we can find the limits on this way:

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Answer:

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wolverine [178]

Answer:

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Step-by-step explanation:

join the centre to all the vertex,

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