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2 years ago

Find the value of x.

Mathematics

1 answer:

zepelin [54]2 years ago

8 0

Answer:

Step-by-step explanation:

Using the Z theorem, the upper angle on the right = 60 degrees.

The angle which includes 3x is 120 because this is a parallelogram and consecutive angles must add to 180. So 180 - 60 = 120

The angle above the 3x is 120 - 3x

120 - 3x + 90 + 2x = 180 These angles make a straight line line. Combine.

210 - x = 180 Subtract 210 from both sides.

- x = 180 - 210 Combine

-x = - 30 Multiply both sides by - 1

x = 30

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Artemon [7]

Answer:

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Step-by-step explanation:

Z-score:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

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