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nadya68 [22]
3 years ago
12

Một cửa hàng bán một bang ủi điện được lãi 20% theo giá bán. Hỏi người đó được lãi bao nhiêu phần trăm theo giá vốn?

Mathematics
1 answer:
Tems11 [23]3 years ago
8 0

Answer:

a welding torch requires 4122.8L of ethylene gas at 0.64 atm

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Factorise a.x3+4.a.x​
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Answer:

{ax}^{3}  + 4ax \\

factorise out a and x :

{ \boxed{answer{= ax( {x}^{2}  + 4) }}}\\ but \: farther \: more :  \\  = ax( {x}^{2}  +  {2}^{2} )

but from general factorization:

{ \boxed{( {a}^{2} +  {b}^{2}) =  {(a + b)}^{2}   - 2ab }}

a » x

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therefore:

= ax \{ {(x + 2)}^{2}  - 2(x)(2) \} \\  \\  = { \boxed{ \boxed{ax( {x + 2)}^{2} - 4x }}}

4 0
3 years ago
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AnnyKZ [126]
Simplify
16/24=8/12=4/6=2/3
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yes
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Suppose an amount increases by 100% percent, then decreases by 100% percent. Find the final amount. Would the situation change i
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Answer:

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hope it helps.

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