Please help with my math i took a picture of it

Mathematics

1 answer:

Fynjy0 [20]3 years ago

6 0

Answer:

40°

Step-by-step explanation:

Supplementary angles add up to 180°. Complementary angles add up to 90°.

m∠1 + m∠2 = 180°

115° + m∠2 = 180°

m∠2 = 65°

m∠2 + m∠3 = 90°

65° + m∠3 = 90°

m∠3 = 25°

m∠2 − m∠3 = 65° − 25° = 40°

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Answer:

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We have:

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$\rm Z = \dfrac{(x - \mu)}{\sigma}$