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musickatia [10]
3 years ago
12

Please explain how to solve this (12+5i) - (9-2i) i have answers but dont understand

Mathematics
2 answers:
zloy xaker [14]3 years ago
7 0

Answer: 3 + 7i

Step-by-step explanation:

Equation expanded: 12 + 5i - 9 + 2i // now simplfy

12 - 9 = 3

5i + 2i = 7i

// together, we get

3 + 7i

MaRussiya [10]3 years ago
4 0

Answer:

10i

Step-by-step explanation:

(12+5i) - (9-2i)

(17i) - (7i)

10i

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8 months ago
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What is 3/5 divided by 2 1/2 by the lowest quotient
Brilliant_brown [7]

Answer:

<h2>\frac{6}{25}</h2>

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3 years ago
The sum of nine-tenths and g is two-thirds solve for g
Naya [18.7K]

Answer:

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4 0
3 years ago
A pilot flew a 400 mile flight in 2.5 hours flying into the wind. Flying the same rate and with the same wind speed the return t
eduard

Answer: 20 mph

Explanation:

Speed is a physical quantity which is equal to the ratio between the distance covered (d) and the time taken (t):

v=\frac{d}{t}

In the first part of the problem, the plane flew a distance of d=400 mi in a time of t=2.5 h. The speed of the plane in this case was the difference between the proper speed of the plane, v, and the speed of the wind, w, since the plane flew opposite to the wind. So we can write:

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During the return trip, the plane flew with a speed (v+w), since the wind was on the tail, and it took 2 hours to cover the same distance:

v+w=\frac{400 mi}{2 h}=200 mph (2)

So we have two equations with two unknown variables. From (1), we get

v=160+w

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(160+w)+w=200\\160+2w=200\\2w=40\\w=20 mph

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2 years ago
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Y is behind 2 its in plain sight   
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3 years ago
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