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aleksandr82 [10.1K]
2 years ago
11

I NEED HELP PLEASE !

Mathematics
1 answer:
ASHA 777 [7]2 years ago
6 0

Answer:

Umm. I believe this is a answer 27.2 sorry dude I will tell an expert to check this out just wait 2-3 min

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Fourteen is 6 less a number (n). Which equation shows this relationship?
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Answer:

14+6=n=20

Step-by-step explanation:n=20

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Solve the simultaneous equation y-2x+1=0 and 4x^2+3y^2-2xy=7
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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.

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3 years ago
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The prime factorizations of 54 and 72 are shown below.
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Your answer is 2’3’3!! (2*3*3 = 18)

hopefully this helps, good luck bud! :)

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