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Setler [38]
3 years ago
9

Which expression represents the number 5i4+2i3+8i2+−4  rewritten in a+bi  form?

Mathematics
2 answers:
aniked [119]3 years ago
8 0
Remember
i²=-1 so
i³=-i
i⁴=1

so
5i⁴+2i³+8i²-4
5(1)+2(-i)+8(-1)-4
5-2i-8-4
-7-2i is the form
Vinvika [58]3 years ago
6 0

Answer:

Thats not the answer. I need help with this answer too.

These are the answers we're supposed to choose from:

−3+2i

5+0i

5−2i

​−3−4i

−3+0i

Which one is it?

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Estimate 63.730+ 32.73 by first rounding each number to the nearest whole number​
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Answer:

97

Step-by-step explanation:

Round each number to the nearest whole number (the digit directly left to the decimal point.) Note that if the digit to the right of the decimal point is 5 or greater, round up; if it is 4 or lower, round down:

63.730 rounded to the nearest one is 64.

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Add:

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97 is your answer.

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3 years ago
what is the maximum, minimum, quartile 1, median, quartile 3, range, interquartlie range of these numbers " 46,48,50,52, and 54"
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Dafna1 [17]

Answer:

y = 18x + 10

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Given that Jasmine has already biked 10 miles, her initial value, or y-intercept would be 10.  Since she is now biking at a rate of 18 miles per hour, her rate of change, or slope, would be 18.  

Using these values for 'm' and 'b': y = 18x + 10

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Write a two column proof 2x+6 and 96 prove: x=45
viktelen [127]
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