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max2010maxim [7]
2 years ago
14

If Lisa ran 50 yards and Kelly ran 51 meters, who ran farther?​

Mathematics
1 answer:
melisa1 [442]2 years ago
3 0

Answer:

kelly

Step-by-step explanation:

51 meters is longer

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8(b+1)=-3(2+b) simply​
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8(b+1)=-3(2+b)

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If (3-4i) (x+iy) = 3 root 5<br> show that x^2 + y^2=9/5
NNADVOKAT [17]

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the answer is 2 + i.

Step-by-step explanation:

Let the square root of 3 + 4i be x + iy.

So (x + iy) (x +iy) = 3 +4i

=> x^2 + xyi + xyi + i^2*y^2 = 3 + 4i

=> x^2 – y^2 + 2xyi = 3 + 4i

Equate the real and complex terms

=> x^2 - y^2 = 3 and 2xy = 4

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=> x = 2/y

Substitute in

=> x^2 - y^2 = 3

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=> y^2(y^2 + 4) – 1(y^2 + 4) =0

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Therefore y^2 = 1, we ignore y^2 = -4 as it gives complex values of y.

Therefore y = 1 and x = 2/1 = 2

The required square root of 3 + 4i is 2 + i.

5 0
2 years ago
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