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2 years ago

10

tim's current bank balance is $75. he adds a charge of -$31 when he buys lunch for him and his friend. write and expression and

use a model to determine tim's bank account balance now.

1 answer:

EastWind [94]2 years ago

5 0

Answer:

75-31, is an expression that model tim's current bank account

44 dollars is his current balance)

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How do I Simplify i^54

yanalaym [24]

Answer:

$i^{54}=-1$

Step-by-step explanation:

First, recall the 4 basic imaginary exponents:

$i^1=i \text{, }i^2=-1\text{, }i^3=-1\text{ and } i^4=1$

So, we want to find:

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This is the same as:

$=i^{52}\cdot i^2$

52 is 4 times 13. Thus:

$=(i^4)^{13}\cdot i^2$

Since we know that i to the fourth is 1:

$=(1)^{13}\cdot i^2$

Simplify:

$=i^2$

And this equals:

$=-1$

So:

$i^{54}=-1$

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