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liq [111]
3 years ago
10

The amount of paint needed to cover the walls of a room varies jointly as the perimeter of the room and the height of the wall.

if a room with a perimeter of 70 feet and 8-foot walls requires 5.6 quarts of paint, find the amount of paint needed to cover the walls of a room with a perimeter of 65 feet and 10-foot walls
Mathematics
1 answer:
anastassius [24]3 years ago
5 0
The answer to the question is 6.5 quarts because according to this 1 quart will cover 1600 square feet
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Answer:

option D is correct, i.e. 3i

Step-by-step explanation:

Given are the complex number as Z₁ = 9 cis(5π/6) and Z₂ = 3 cis(π/3)

So magnitudes are r₁ = 9, and r₂ = 3

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Then |Z₁ / Z₂| = (r₁/r₂) cis(∅₁ - ∅₂)

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|Z₁ / Z₂| = 3 cis(5π/6 - 2π/6)

|Z₁ / Z₂| = 3 cis(3π/6)

|Z₁ / Z₂| = 3 cis(π/2)

|Z₁ / Z₂| = 3 cos(π/2) + 3i sin(π/2)

|Z₁ / Z₂| = 3*(0) + 3i*(1)

|Z₁ / Z₂| = 0 + 3i

|Z₁ / Z₂| = 3i

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