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3 years ago

Z=-302+19.3i?????????

Mathematics

1 answer:

mafiozo [28]3 years ago

4 0

Answer:

I don;t know what the question is but I know that z is an imaginary number.

Step-by-step explanation:

z=-302+19.3i

that means that it doesn't represent an actual number but is imaginary.

An imaginary number is a complex number that can be written as a real number multiplied by the imaginary unit i, which is defined by its property i2 = −1. The square of an imaginary number bi is −b2. For example, 5i is an imaginary number, and its square is −25.

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Otrada [13]

Answer:

The boat traveling at 24 kph when John goes downstream.

Step-by-step explanation:

We are given the following in the question:

John has a boat that will travel at the rate of 15 kph in still water.

Let x be the speed of the current.

Speed of boat in upstream

$(15-x)\text{ kph}$

Speed of water in downstream

$(15+x)\text{ kph}$

Relation:

$\text{Speed} = \dfrac{\text{Distance}}{\text{Time}}$

We have to find the speed of boat in downstream.

Time to travel upstream for 35 km = Time to travel 140 km downstream

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Thus, speed of current is 9 kph.

Speed of boat in downstream = 15 + 9 = 24 kph.

Thus, the boat traveling at 24 kph when John goes downstream.

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3 years ago

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Anni [7]

Answer:

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Step-by-step explanation:

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2 years ago

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Step-by-step explanation:

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