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tensa zangetsu [6.8K]
3 years ago
14

PLEASE HELP FAST!! WOULD BE VERY APPRECIATED!

Mathematics
1 answer:
soldi70 [24.7K]3 years ago
3 0

Answer:

Step-by-step explanation:

look at -4x and -1 now take away the x in -4 and there is your answer

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Divide 3 into 39.39 round to the nearest tenth if possible
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First u divide 39.39 to 3 and u get 13.13 so it is already rounded u dont need to round<span />
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Pls help look at the picture to answer th questions
bonufazy [111]

Answer:

Step-by-step explanation:

B, y=5x

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3 years ago
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Please HELP!!!!
Karolina [17]

Answer:


Step-by-step explanation:

Firstly, note that -2i really is just z = 0 + (-2)i, so we see that Re(z) = 0 and Im(z) = -2.

When we're going from Cartesian to polar coordinates, we need to be aware of a few things! With Cartesian coordinates, we are dealing explicitly with x = blah and y = blah. With polar coordinates, we are looking at the same plane but with angle and magnitude in consideration.

Graphing z = -2i on the Argand diagram will look like a segment of the y axis. So we ask ourselves "What angle does this make with the positive x axis? One answer you could ask yourself is -90°! But at the same time, it's 270°! Why do you think this is the case?

What about the magnitude? How far is "-2i" stretched from the typical "i". And the answer is -2! Well... really it gets stretched by a factor of 2 but in the negative direction!

Putting all of this together gives us:

z = |mag|*(cos(angle) + isin(angle))

= 2*cos(270°) + isin(270°)).

To verify, let's consider what cos(270°) and sin(270°) are.

If you graph cos(x) and look at 270°, you get 0.

If you graph sin(x) and look at 270°, you get -1.

So 2*(cos(270°) + isin(270°)) = 2(0 + -1*i) = -2i as expected.

3 0
3 years ago
Which shows the decimals 34.8, 36.43, and 36.29 in order from greatest to least?
ruslelena [56]
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Answer:

745.88

Step-by-step explanation:

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