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Yuri [45]
3 years ago
8

(3x)/(7y)-:(9z)/(19y^(2))

Mathematics
1 answer:
bezimeni [28]3 years ago
6 0
I think this is the answer, though you might need to recheck it

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A file server costs $30,000
Digiron [165]

Answer:

30,000 - 20% =24,000 year 1

24,000 - 20% =18,000 year 2

18,000 - 20% =12000 year 3

12,000 is your answer B)

Step-by-step explanation:

4 0
3 years ago
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Solve the simultaneous equation y-2x+1=0 and 4x^2+3y^2-2xy=7
Lapatulllka [165]

The first equation is y-2x+1=0

y=2x-1 (Equation 1)

The second equation is 4x^{2}+3y^{2}-2xy=7 (Equation 2)

Putting the value of x from equation 1 in equation 2.

we get,

4x^{2}+3(2x-1)^{2}-2x(2x-1)=7

4x^{2}+3(4x^{2}+1-4x)-4x^{2}+2x=7

by simplifying the given equation,

12x^{2}-10x-4=0

6x^{2}-5x-2=0

Using discriminant formula,

D=b^{2}-4ac

D=25-4 \times 6 \times -2 = 73

Now the formula for solution 'x' of quadratic equation is given by:

x=\frac{-b+\sqrt{D}}{2a}  and  x=\frac{-b-\sqrt{D}}{2a}

x=\frac{5+\sqrt{73}}{12}  and x=\frac{5-\sqrt{73}}{12}

Hence, these are the required solutions.

8 0
3 years ago
Pls halp me TwT im l
kakasveta [241]

Answer:

22 is the answer but which country are you from

6 0
4 years ago
A coffee maker is $49.99. During Black Friday sales, you got it for $33.55.What was the Black Friday sale? Round to the nearest
Dmitry [639]

Answer:

i do not know what it is sorry

7 0
3 years ago
When collecting data from real-world problems, it is always best to represent
Serhud [2]

Answer:False

Step-by-step explanation:You can use any chart

8 0
3 years ago
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