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Zarrin [17]
3 years ago
14

When 3+4i2+i is expressed in the form a+bi, what is the value of a?

Mathematics
1 answer:
mart [117]3 years ago
7 0
Multiplying and dividing with conjugate of 2+i in the given expression, we get(3+ 4i)(2-i)/(2+i)(2-i)=(6-3i+8i-4i^2)/(4-i^2)=(10+5i)/(4+1)=(10+5i)/5=2+i=a+bi<span>Thus a=2</span>
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Answer:

The lateral area is 392.5 sq. inches.

Step-by-step explanation:

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Lateral Area = 2\pi r h

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Given, diameter = 5

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height = 25 inches (same as length, here)

Now we use 3.14 for \pi and substitute the values to get the lateral area:

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The lateral area is 392.5 sq. inches.

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Step-by-step explanation

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2 years ago
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Veseljchak [2.6K]

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3 years ago
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marishachu [46]

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2 years ago
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