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Ainat [17]
3 years ago
9

If you guys can show me how the question -2x-6<-2 equals 8, I'll give you 30 points. Show work please

Mathematics
1 answer:
sweet [91]3 years ago
8 0
Can I still post my answer here? 

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Can some one help me with this too
Ivan

Answer:Sure thing, But what do you need help with? And whatever you need help with maybe just maybe I will help you with whatever you need help with.

Step-by-step explanation:

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PLEASE SOMEONE HELP ME PLEASE :(
creativ13 [48]

Answer:

1 and 5= corresponding angles.

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3 and 6=co interior angle.

5 and 8=linear pair.

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Anthony received $150 for his birthday this year. This was $10 less than half the amount
vladimir2022 [97]

Answer:

320

Step-by-step explanation:

if he received 10 less than half then you would just have to add that 10 back and multiply by 2.

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What is this pls help
Alex
-4.5 or -4.3 i’m not really sure i’m just estimating
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2 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

2xy = 4

=> xy = 2

=> x = 2/y

Substitute in

=> x^2 - y^2 = 3

=> 4/y^2 - y^2 = 3

=> 4 – y^4 = 3y^2

=> 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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