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posledela
3 years ago
6

ABC is a straight line

Mathematics
1 answer:
Ksivusya [100]3 years ago
8 0

Answer:

AB = 60 cm

Step-by-step explanation:

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How many attemps you get everyday . what is the limit. its telling me you are out of answer for now
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If Pam can install 12 insulators in 15 hours, how long does it take to install one insulator
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The diameter of a sphere with a volume of 12,348 cubic ft is ___ ft.
aniked [119]

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108.62ft

Step-by-step explanation:

12348=⁴/3×3.14×r²

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What is the formula of finding the volume of a triangular prism?
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Step-by-step explanation:

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7 0
3 years ago
If (3-4i) (x+iy) = 3 root 5<br> show that x^2 + y^2=9/5
NNADVOKAT [17]

Answer:

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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=> xy = 2

=> x = 2/y

Substitute in

=> x^2 - y^2 = 3

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=> y^4 + 3y^2 – 4 = 0

=> y^4 + 4y^2 – y^2 – 4 =0

=> y^2(y^2 + 4) – 1(y^2 + 4) =0

=> (y^2 – 1) (y^2 + 4) =0

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
3 years ago
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