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vodomira [7]
3 years ago
13

Simplify the complex number i^28 as much as possible.

Mathematics
1 answer:
ella [17]3 years ago
5 0

let's recall that i⁴ = 1 so then    i^{28}\implies i^{4\cdot 7}\implies (i^4)^7\implies (1)^7\implies 1

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A player ran 30 yards in a football game. How many feet did the player run?
Bad White [126]

Taking into account the change of units, the player ran 90 feets in the football game.

<h3>Rule of three</h3>

In first place, the rule of three is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.

That is, what is intended with it is to find the fourth term of a proportion knowing the other three.  

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a ⇒ b

c ⇒ x

So: x=\frac{cxb}{a}

The direct rule of three is the rule applied in this case where there is a change of units.

<h3>Change of units</h3>

To perform in this case the conversion of units, you must first know that 1 yard = 3 feets. So, if 3 feets is 1 yard, how many feets equals 30 yards?

1 yard ⇒ 3 feets

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So:  x=\frac{30 yardsx3 feets}{1 yard}

Solving:

<u><em>x= 90 feets</em></u>

In summary, the player ran 90 feets in the football game.

Learn more with this example:

<u>brainly.com/question/12482948?referrer=searchResults</u>

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I'm sure you asked this 24 hours ago, but it's A.
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