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loris [4]
3 years ago
6

What’s the answer??????? Pleaseeeeeeee helppppppppppp

Mathematics
2 answers:
Vinvika [58]3 years ago
5 0

Hello from MrBillDoesMath!

Answer:

Choice A,   18x - 6y = 20


Discussion:

Given line  

-9x + 3y = 12     (M)


Choice A:

18x - 6y = 20  =>          divide both sides by -2

-9x + 3y = -10     (N)


The left hand sides of (M) and (N) are equal implying that right hand sides are equal which further implies 12 = -10.  Contradiction! so the system M and N has no solution.


Thank you,

MrB

Svetlanka [38]3 years ago
4 0
The answer is a!!!!!!!!!!
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Step-by-step explanation:

£480 = 120% (after adding the 20% VAT).

we want to know how much 100% is.

he do we get from 120% to 100% ?

first the formal long way

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1% = 120%/120 = 480/120 = £4

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once you understand this mechanism, you can apply the direct shortcut :

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Hello!

10% off means there's a discount on the jacket, so we will be finding how much the discount is worth and then we'll subtract that from the original cost of the jacket. 
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