3 years ago

Please help me with my math

Mathematics

2 answers:

zubka84 [21]3 years ago

8 0

ANSWER:
C

Explanation:

lianna [129]3 years ago

3 0

C is the correct answer

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Can someone help me and explain how u know ASAP PLZ

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1.

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619.5 km = 619.5 * 1000 m = 619,500 m

2.

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3 years ago

A certain component is critical to the operation of an electrical system and must be replaced immediately upon failure. If the m

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Answer:

Step-by-step explanation:

From the given information:

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$P(\sum X_i \ge 2000) = P \Bigg(\dfrac{\sum X_i - 100n}{\sqrt{n \ Var (X)}} \ge \dfrac{2000-100 n }{\sqrt{n \times 900}} \Bigg )$

$P \Bigg(\dfrac{\sum X_i - 100n}{\sqrt{n \ Var (X)}} \ge \dfrac{2000-100 n }{\sqrt{n \times 900}} \Bigg )= P (Z \ge 0.95 ) \ \ \ because \ Z_{0.05} = -1.65 \\ \\ \\ \dfrac{2000-100 n }{\sqrt{n \times 900}} = -1.65 \\ \\ \\ \dfrac{100\ n-2000 }{\sqrt{900n}} = 1.65 \\ \\ 100 n -1.65 \sqrt{900 n }-2000 = 0$

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3 years ago

SOLVE X!!! PLS HELP ASAP

Lady_Fox [76]

Answer:

145°

Step-by-step explanation:

x + 35° = 180° {being linear pair }

x = 180° - 35°

x = 145°

Hope it will help :)

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3 years ago

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