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Mathematics

1 answer:

madreJ [45]3 years ago

5 0

Answer:

0:42

Step-by-step explanation:

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Is 2.73234(34 repeating) rational or irrational?

Fittoniya [83]

It's rational because of the repeating digits.

We have

x = 2.732343434…

Then

1,000x = 2,732.343434…

and

100,000x = 273,234.343434…

Subtracting these makes the fractional part go away, leaving you with

100,000x - 1,000x = 273,234.343434… - 2,732.343434…

100,000x - 1,000x = 273,234 - 2,732

99,000x = 270,502

x = 270,502/99,000 = 135,251/49,500

which is clearly a rational number.

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3 years ago

Multiple choice:

Paha777 [63]

In the given you wrote -2, whereas it should be -2i

z = a + bi and in trigo form | z |.(cos Ф + i.sin Ф).
z = 0 -2i → | z |.(cos Ф + i.sin Ф)
Now let's calculate z:

z² = a²+b² → z² = 0² (-2.i)² → z = -2(i)² →z= -2(-1) → z = |2|
tan Ф = b/a = -2/0 → tan Ф → - ∞ ↔ Ф = -90° or Ф = 270°
then the - 2 I ↔ |2|(cos 270° + i.sin 270°)

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3 years ago

Find the slope of a line parallel to the line through the given points p(-2,4) q(6,-2)

olchik [2.2K]

Answer:

(-2-4)/(6+2)= -6/8= -3/4

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3 years ago

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Is 0.75 greater than 0.100?

Naya [18.7K]

Yes because you only need to look at the first decimal for problems like these and the first number you see a seven and a one and seven is greater than one

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Solve for x. x= Look at image

postnew [5]

Answer:

$x = 14$