4b^2 - 16 =
4(b^2 - 4) =
4(b + 2)(b - 2)
Answer:
1
Step-by-step explanation:
You want to know the value of i^4.
<h3>Powers of i</h3>
The fourth power of i, √(-1), can be found the same way the value of any fourth power can be found: carry out the multiplication.
i^4 = i·i·i·i = -1·i·i = -i·i = -(-1) = 1
The fourth power of i is 1.
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<em>Additional comment</em>
As you can see from the evaluation process, ...
i¹ = i
i² = -1 . . . . . definition of i
i³ = -i
i⁴ = 1
The sequence repeats for higher powers.
Answer: Third option.
Step-by-step explanation:
You know that the drawbridge rises at a rate of 
feet per minute. This means that the drawbridge rises in a minutes.
Convert from mixed fraction to decimal number:
Since the drawbridge rises to a height of 50 feet, you need to apply this procedure in order to find the time the drawbridge takes to completely rise:
or 
Answer:
It’s not allowing me to place done the work but the answer is 8 sorry!
Multiply everything by 4 so you get rid of the fraction
